Sophos xg packet capture status violation. This thread was automatically locked due to age.
Sophos xg packet capture status violation You can capture wireless packets from remote access points to diagnose and troubleshoot network issues. this is the second time this happens. 0/24) Wifi Zone (10. I took a packet capture and in there I can see that the packets are being blocked. Hello, I've been detecting a strange behavior on an xgs 2300 (SFOS 19. Sophos Community. Specify the number of bytes to be captured per packet. The following screenshot shows some examples: Sophos Firewall If i look at packet capture i get "Rule 0 violation firewall". When we give the Client behind the red a static IP - it work Attached are the RED & DHCP Settings XG has 17. Can you please help me in this Packet capture shows the details of the packets that pass through an interface. 100. Debugging Log File This guide is intended to cover examples of basic SMTP MTA deployment and FAQs related to the Sophos Firewall MTA. I have a pfSense box between sophos XG firewall and the internet because I wanted to use a VPN to have all traffic going through, I have the port forwarded in pfSense to the XG firewall however the XG firewall is denying the packet, which I didn't even know was reaching the firewall until I enabled the log in settings by sheer coincidence. Add a DNS host entry The XG Series hardware appliances will reach end-of-life (EOL) on March 31, 2025. 15. 10, DMZ). It may be a red herring, but Violation reports start appearing in the firewall log. Hello, kind and helpful people. I also tried adding various Any<>Any rules in the firewall config and tried (without success) to add a DHCP application to the Device Access (can't seem to find a way to add DHCP to this). Regards, Aditya Patel Global Recreate the issue to capture packets. console>drop-packet-capture 'host <dst IP> and proto ICMP. Static mappings are also supported. Kindly contact Support to have this link to your account. 2 in the Head Office. Downloading packet capture from GUI isn’t possible. please make sure you have that like: Is that 192. If I do a traceroute from the client at the branch to the file server, it goes to the Please make sure that the firewall rule for the VPN connection is allowing port 9000 and take tcpdump and drop packet capture on the port number of IP addresses. Command : console>drop-packet-capture 'host <IPaddress of the Host machine or Website > and not port 137. ) on Sophos UTM, the default mechanism used to determine if a link is "alive" or not was to do a lookup for or against a root DNS server, then it would ping the closes available responding hop for monitoring purposes (settings which can be changed BTW). I'm very happy to switched to Sophos XG. Sophos Firewall compares the password you're trying to set with a database that includes commonly used passwords and dictionary words. console>tcpdump 'host <destination IP> So, I'm not 100% sure about XG, but I know if one configures link monitoring (or link balancing, etc. 0/24) will connect with an external cloud PBX server (185. On pure XG logging, live logs does not report nothing; drop-packet-capture not all the domains; tcpdump you get mad with such connections; Please separate logs for VPN, Wi-Fi, DHCP, DNS requests (at least). 0 If I now watch via packet capture specifying “dst port 5353” I see lots of packets arriving from the Plug, which look like DNS type packets. Buffer size: 2048 KB; Buffer used: 0 Packet capture Nov 11, 2024. I have no cooking clue why. I can ping other devices so I know the tunnel is working, I just can't ping the XG's local IP from the remote tunnel. I can use the CLI if required but not sure how to search the logs using the command line. 018. Thank you for reaching out to Sophos Community. 443 : proto TCP: R 861543794:861543794(0) win 8192 checksum : In diesem Video stellen wir euch das Diagnose Feature Packet Capture in der Sophos Firewall im Detail vor. Firewall rules: LAN-ANY/RED-ANY RED-ANY/LAN-ANY. You could use tcpdump or the packet capture tool (with a BPF filter for udp and port 161) to check Go to Diagnostics > Packet capture and see whether traffic is coming in and going out through the IPsec tunnel. That is the primary use case. The blocked broadcast traffic was misleading a bit, but in fact it's not an issue on Sophos XG side. 64048 : proto UDP: packet len: 648 checksum : 61834 Next, I need to see what is happening with the NAT rule, which is supposed to translate the alternate port UDP 6161, to the real SNMP UDP port of 161, and translate the destination IP from the WAN port, to the LAN port IP. x. If you do not place the Host in the group, it will not work, because XG will lookup it freely at demand. Cancel; Vote Up 0 Vote Down; Cancel; 0 FormerMember over 3 years ago in reply to Mayuresh Bhagwat. Our concern is that we have a lot of packet loss at the XG appliance level. Check the packet capture so that we could determine what port is the return packet going to. 4 MR-4) to an UTM (client, Software version 9. I wanted to connect the Sophos firewall on site A to What I've noticed is that since switching the VPN from policy to route, I'm unable to ping the XG from the other side of the tunnel. At the same time the firewall logs were showing User A correctly. Go to My Products > Wireless > Diagnostics > Packet Capture and set up packet capture for your access points. So In Sophos Firewall web admin> Diagnostics > Packet capture, toggle off packet capture, set the packet capture filter to "host 10. Hi Bob, there is absolutely nothing to find in the Firewall logs Please check with Packet capture, tcpdump and drop packet capture traffic is hitting the firewall. 13. Can you please post a packet capture snapshot? Check packet flow in CLI as well Sophos Public Address is an IP 192. Is this a known issue? I have not seen that on earlier versions but I do not use GUI packet capture very often. Packet filter Violation Reason Firewall. If you have a case number, it is recommended to check it with Sophos Support and contact the engineer who handled the case. If you select this option, Packet capture starts again from the beginning of the buffer. 10. Apparently, my Sophos XG send his packet without providing his MAC address and he drop it. Explanation. You can restrict the packet capturing to specific types of packets. Discussions Open VPN cant connect to Sophos XG. Release Notes & News; Discussions; Recommended Reads; Early Access Programs; Packet Capture. You can configure the number of bytes to be captured per packet. Sophos XG Firewall: How to monitor dropped packets using CLI; Sophos XG Firewall: How to capture packets and download the Packet MTA is most likely using SMTP Default port 25. how can I see only dropped packets for a specific MAC address on a selected interface? something like this on the device console isn't working but I think it is similar Our concern is that we have a lot of packet loss at the XG appliance level. This requires a support team investigation via wireshark packet capture. Hi. The ping via the diagnostic tool work great . Trace Off: Packet capture is off. 124. Go to Diagnostics > Packet capture and click Display filter. logs {log file} [lines] {number} Hi LuCar Toni,. We could see the GUI PCAP and in that, it's showing the violation and the Even it shows violation in the Packet capture but analyzing the DHCP traffic with Wireshark shows that the XG firewall is still forwarding DHCP packet to clients and server. 60. I am currently trying to configure Sophos xg to replace my Fritzbox. Number of Views 484. =0 up_classid=0 dn_classid=0 nat_id=0 cluster_node=0 inmark=0x0 nfqueue=2 gateway_offset=0 If you select DNS as the admin service, Sophos Firewall doesn’t directly start responding to DNS requests from the WAN. Product and Environment Sophos Firewall - All supported versions Resolution Analyze the DHCP traffic via Wireshark and you will see that Sophos Firewall still forwards the DHCP packets to the clients and servers. Partners; Company; Toggle Menu. 53. I am suspecting issue with browser end have you checked with other browser ? Please share packet flow go to MONITOR AND ANALYZE-->Diagnostic --->Packet Capture click on Configure add "host Sophos Certified Engineer - XG Gold Solution Partner since 2005. 151. Determine the traffic flow via TCPDump, drop packet capture from CLI and from GUI. Startup help ; Turn this off if you manage your access points in Sophos Central. The x-axis shows time. Release Notes & News; Discussions; Recommended Reads Sent packets are not compressed unless "allow-compression yes" is also set. One examle is VLAN lag0. Sophos Firewall - All supported versions. telnet6 dnslookup set traceroute dnslookup6 show traceroute6 drop-packet-capture system enableremote tcpdump Set the interface on Sophos Firewall to send packets from. The app seems to freeze. Now secondary link is down however the secondary link is set such that it will only be active when primary is down . You I ran the packet capture utility in Diagnostics and found the packets with a status of Violation and the Reason is Local_ACL. 20. Matthieu Specify the number of bytes to be captured per packet. So just ignore that violation message. Enter the details as follows: Thank you! I was seeing similar issues with Facebook app on iOS not loading images - accompanied by the logs like the one discussed here. You would see ipsec0 as an outbound interface for the traffic routed through the tunnel. An APX series access point acts Packets showing Consumed does not mean that the packets are dropped my the XG , however, the Invalid Traffic does drop the traffic and must know if the packet is necessary for the communication or not. I'd suggest you run a packet capture and drop packet capture from CLI and review it in Wireshark. Based on the flow, do further troubleshooting. Fill the required fields as shown below: Let's have a look at how to enable Sophos XG packet capture. 106. y. After the packet capture, the file will be located at the /tmp folder, in the example above It will be located at: "/tmp/file. For more reference see Packet Capture; To figure out on which rule the traffic is passing, we did a ping test on 1. If i use the packet capture on the XG210 (the hub) with the BPF string host 10. If the packets come below the configured packet rate, Sophos Firewall accepts them. However, these The drop-packet-capture logs are active logs, whether you check the log traffic function or not, they will be captured when firewall will drop the traffic for any reason. run . Go to a web browser and download the packet capture file from the following path: https://<UTM IP:Port>/tcpdump. 0 When using the leased line (using the same firewall rule), eventually inbound call routing starts to fail (call quality is good). Sophos XG Firewall: How to configure firewall as a DHCP Relay You can restrict the packet capturing to specific types of packets. Invalid traffic events are shown in the log viewer. You could use tcpdump or the packet capture tool (with a BPF filter for udp and port 161) to check The status, buffer size, and buffer used for capturing packets is shown as follows: Trace On: Packet capture is on. The auto-generated packets by the Sophos of site A destined for site B are automatically sent through the gateway of Network B (Backup). Normal gates are supported for each of the syntax such as AND/OR/NOT 3. com and port 443 Can you do a drop-packet-capture from the console of the XG ( you can SSH in to the XG using Putty and then press 4>3) console> drop-packet-capture 'host x. To replicate: Diagnostics -> Packet Capture (Tab) -> Display Filter (Button) -> Status (Drop down menu) "Forwarded" is instead displayed as "Fowarded" - this affects the result of the display 2024 Sophos Ltd Packet Capture. The corresponding firewall rule appears to be the built in "drop all" rule which is not logged. Related information These packet drop could be the TCP RST or TCP FIN packets that all the firewalls drop to prevent TCP RST/FIN attack. 10, if there is no reply packet then you may want to check from destination machine(10. The only instructions I have found are to download a pcap file that was generated from the console packet capture. 90. 1119 : proto TCP: R 1217314618:1217314618(0) checksum : 26350 Sophos Firewall Engineer 16. Firewall Log. I tried 'drppkt | grep 5060' and got the following output. 37. All off my user are affected and they can all ping the router, but not past it. Related information You can restrict the packet capturing to specific types of packets. The echo reply then comes from Port3 from the I'm not sure how to search the XG logs for the IP address of the server. The status is "Violation" and the reason is "SSL_VPN". Go to a web browser and download the packet capture file from the following path: https://<UTM Once the capture filter is configured, you can start capturing packets by turning the packet capture ON. However, I have created a DNAT rule for secure LDAP which is working. Please use the below BPF string to get the correct packet capture output. We checked, but it’s not a network layer issue or anything else. Sophos XG Firewall: How to monitor dropped packets using CLI; Sophos XG Firewall: How to capture packets and download the Packet You can use "tcpdump -i Port1 -w file. Sophos Firewall: Configure a policy-based IPsec VPN connection using digital certificates; Sophos Firewall: Create a policy-based IPsec VPN connection using preshared key Hi David Sain. Go to Diagnostics > Packet Capture and click Configure. Add a DNS host entry; Use drop-packet-capture commands to monitor dropped packets. If you place it into a host group, XG will create some sort of Cache for those hosts, so it does not have to ask the switch all the time. The plan for this deployment is to use the Sophos as network device for all of the Gateways of the Network. 0/24) I have the following Sophos Community Site Sophos Firewall. To force the internet traffic through the SSL VPN adapter, verify the endpoints' routing table and prioritize the SSL VPN Thank you for contacting the Sophos Community. 159. Latency. 49. These may be broadcasts or packets directed to interface-IP of the firewall. 5. It uses these protocols to create IP/MAC mappings and stores them in neighbor caches. Turn it OFF once you have enough packets to analyze. Alternatively, go to Routing > SD-WAN profiles, select an SD-WAN profile, and under Status, click Historical performance. 6 MR-6) for VoIP: 3 internal SIP clients (on a local LAN 192. Enter the details as follows: These hosts communicate every second with a device hosted behind XG. Sophos Firewall . None. More resources. This video shows you how to identify dropped packets using the log After a couple minutes it clears its self. I did not load the sip module before. I can ping the website fine but can't access it. This would fall under the Feature request. Enter the details as follows: 10) and observe the traffic flow from source(10. This tool can capture all LAN or WLAN network traffic for a specified time. With a mentioned BFS string, you'll only be able to see the incoming packets. For context I had two WAN links from same ISP i. Best Regards. Discussions XG330: No traffic between LAN and DMZ even if a rule is place. Has anybody know how to match specific "Invalid Traffic" log entries with "advanced-firewall" (CLI interface) ? I would like to know if some of those log entries are caused by a little to strict firewall for home environment. The XG Series hardware appliances will reach end-of-life (EOL) on March 31, 2025. The rule construct is identical to a forward rule that works. can be any port. The proprietary program tell me that it can ping the device but it cannot receive any data. You can see the connection details and details of the packets processed by each module, such as firewall and issue a tcpdump "port xxx" from console and post the result. x' (x. Is that done via the CLI? I have run a packet capture on the server IP address and I can't see any packets with a status of violation. i am new to xg and i don't want to use command line to set /routing-to-another-gateway-on-the-same-lan-subnet-as-sophos-xg. In this example, I will show you how to determine if Sophos XG is sending syslog messages to Fastvue Sophos Even it shows violation in the Packet capture but analyzing the DHCP traffic with Wireshark shows that the XG firewall is still forwarding DHCP packet to clients and server. Go to Sophos Firewall webadmin > Diagnostic > Packet capture, and enter "host 192. Even it shows violation in the Packet capture but analyzing the DHCP traffic with Wireshark shows that the XG firewall is still forwarding DHCP packet to clients and server. This may be required when investigating issues and should only This article describes the steps to configure Sophos Firewall’s packet capture feature. After recreating the issue, press Ctrl + C key combination to stop the packet capture. The access point includes a built-in packet capture tool. Thanks, Ben You can restrict the packet capturing to specific types of packets. e. 1. 2. 110. 52", and then toggle to turn on the packet capture. XG checks IP spoofing based on two conditions, Either the network ( of the source IP) should be directly connected or XG should have the routes to 2. 8 and RED firmware 2. You can no longer post new replies to this discussion. 51 or host 10. I disabled IP Spoof completely and the traffic was then no longer blocked. Firewall rule ID gets marked when traffic gets forwarded from it. 705-3). I have tried to manually add the IPSec routes (using CLI -> system Using XGS with SFOS 20. Internet traffic does not go through the firewall The SSL VPN remote access policy has the Use as default gateway option turned on, but internet traffic goes through the local internet connection of the endpoint instead of the SSL VPN adapter. Interfaces on XG: INTERNAL 172. Hi Kevin, Thanks for the details and it sounds to me like your configuration should be working so something else is at play here. Once 120 seconds passed then no more Violation and there is a NAT ID in packet capture matching the linked NAT rule's ID. For a broadcast drop, you will get logs as follows: A packet capture shows a "violation" for DHCP and DHCP relay traffic. But I monitored those events also for other VLANs that are DHCP relayed over the XG and those LANs are internal VLANs. Packet Capture show Violation Firewall. See packet capture below from both firewalls: LAN FW packet capture: I see the echo request come in from LAN to DMZ firewall IP via Port9 (LAN interface) and out via port 3 (DMZ Interface). 10 to 10. drop packet capture doesn't provide any information on concerned trafic. When I check packet capture, I see the filewall is dropping the packet with flag invalid traffic but doesn't really say why. The source mac address is the AP's mac address. 176. The core switch has a static route of 0. Sometimes the DPI Engine doesn't hold the last packet, and let the user to download the file entirely, apparently without AV scan. Hi , Thanks for reaching out to Sophos Community This is usually triggered when the spoofing is turned on. " And unfortunately this is my problem: a It is not showing in the Log but it i did drop-packet-capture this pops up. comsean@seanmancini. Analyze the DHCP traffic via Wireshark and you will see that Sophos Violation: If a policy violation occurs, the device drops the packet and shows this status. Enter the following as the BPF string, then turn ON the packet capture. 185 Only issue is that that the 'interfaces' icon is red and marks the new new WAN connection with a red status. 1119 : proto TCP: R 1217314618:1217314618(0) checksum : 26350 Hi, I have the following setup: Sophos XG 85 Firewall (Wifi) DMZ Zone (VLAN 2 on Port 1)(10. here is a result extract of the drop-packet-capture command. We have serval offices (Well over 30 locations) that experience printing issues when going through our Sophos XG (115/125) Firewalls. 10) as to why it is not responding. 2, eth0. [status=5010 This article will provide a brief description of different types of Packet status that can be viewed on the packet capture tool. Switch would be required for HA deployment so if there is no change happened on switch side recently, it might be behaving similar way earlier also. pcap; Go back to the Advanced Shell of the UTM and then run the following command. The ICMP packets never leave the firewall, they just die right there. 52", and then Configure capture filter Mar 11, 2022. A captured syslog packet with the suggested setting will show the following characteristics You should check the drop-packet-capture using this KBA Sophos Firewall: Monitor traffic using packet captureand find why it’s being dropped. Unfortunately in the log I've seen that the traffic is using the rule but when I analyze traffic using XG Cli (drop-packet-capture) I've always seen some entries like this: 2017-02-05 13:26:10 0102021 IP X. For more information on diagnosing and troubleshooting issues, see Frequently asked questions. 57 shown in the lists above and I have monitored at least 2 others in the GUI packet capture. Site; User; Site; Search; User; Community & Product Forums. If the buffer usage exceeds 2048 KB while Packet capture is on, packet capturing stops automatically. We will investigate this further and do the necessary updates on the knowledge base article. Anyone have any idea why this traffic is getting caught by the Local_ACL and how i get it to The Packet capture page provides a method to gather data where specific Sophos functionality is not working. x or host y. console > set advanced-firewall udp-timeout-stream 150 I can see with a packet capture that actually the firewall is trying to forward it to the Internet instead (which would not work, since the local/remote IPs are non-routable). Examining the Sophos UTM tcpdump Packet Capture. Fresh Install of Sophos 3300 - The Sophos is the gateway to the local networks. Name Description Log file Service; Application filter: The application filter uses the same service and log file as IPS: ips. If DNAT service is accessible without any issue, it's possible that these ARP requests might be getting dropped earlier as well but not seen until packet capture is run. All firewalls drop multiple TCP RST and TCP FIN packets Invalid traffic logging is on by default for Sophos Firewall. Given the second network is on a wireless, and a different subnet to the wired network, then I would recommend reconfiguring the Wireless into the WIFI zone, and then creating firewall rules to allow traffic from the LAN zone and IP range to the WAN Zone and IP Range, and a secondary rule for the reverse. Who can help? This thread was automatically locked due to age. A packet capture shows a "violation" for DHCP and DHCP relay traffic. Home; More. The status, buffer size, and buffer used for capturing packets is shown as follows: Trace On: Packet capture is on. In the log viewer and packet capture I can see, that the connection attempt is a Local_ACL violation and Message ID in log is 02002 (Local ACL traffic denied). If i check packet capture i get "Violation Local_ACL" which is exactly the same as without the rule. 112. 142. How to configure the capture filter. The "violation" message can be ignored. Enter the details as follows: Ok, so was trying to quickly troubleshoot a connectivity issue on my XG 135 appliance and found that when I toggle on the packet capture it immediately turns off (tried with both Firefox and Chrome with no change in behaviour) Hi Christiaan du plessis you can confirm with drop packet capture console>drop-packet-capture 'host <source or destination IP> suspecting issue from ISP router Thanks and Regards +1 Bharat J over 2 years ago Thank you! I was seeing similar issues with Facebook app on iOS not loading images - accompanied by the logs like the one discussed here. The sites are connected by VPN and the firewall rules allow all services. The Packet Capture on the XG GUI displays USER_IDENTITY violations when the user is trying to browse from the wired LAN after changing from wireless. 4) on SG210 appliances with Sandstorm and 1x AP55 Sophos Central with Intercept X Advanced Simply because XG will resolve the IP Host groups differently using an own cache. Once connected to VPN I am able to ping all of the Gateway IP addresses on the Firewall, but unable to ping the devices on the network. 0 a new subnet in your infrastructure and some guys forgot to create it on all devices? I tried 'drppkt | grep IPphone' while making the call, hold and try to get back the conversation. Related information I have been trying and failing to get SNMP monitoring working for my Sophos XG firewall using PRTG. Wi-Fi: SSL VPN: TCP port 8443. Overview Packet capture may show violation for DHCP and DHCP relay traffic like the following: The following sections are covered: Explanation Related information Feedback and contact Applies to the following Sophos products and versionsSophos Firewall Explanation Even it shows violation in the Packet capture but analy Sometimes sophos drops all packages to a random user (not everyone) for 1-2 minutes and after 1 minute it stop dropping, internet start working fine. 0 Sophos Firewall Architect 18. So from Sophos' But if I remove source and destination network and keep only soruce and destination zone then in packet capture I can see status forwarding and not violation. 218 is the bio sensor. 50. The following will be displayed in the packet capture. Primary Device stucks in bootloop after failover to auxilary device. 16. In GUI Packet capture Screenshot (export to Excel) you can see a before and after comparison of IP Spoof enabled/disabled and see that there exist a FW rule (ID 14) for ICMP and a NAT roule is also not present. An other thing that might happen, is that sessions are dropped caused by This video shows you how to identify dropped packets using packet capture: Packet capture Trace on/off. If a user sends a packet that doesn't match a current connection, Sophos Firewall logs this as an invalid traffic event. 1 during packet capture on the Web GUI I noticed that traffic of user A was shown as traffic of user B with the correct source/destination IPs. I can't connect in any way. Now the problem is in reply. Previously I have got round ACL violations using Device Access configuration. Note: When I do a Packet Capture, I can see ICMP coming from the SSL VPN client pool IP to the Voice network IP address, but under the Status column it says "Violation" and under Reason it says "SSL_VPN". I'd like to know: How many ports can be doing packet Hi Ian, I solved the problem tonight. What is the status when you directly ping from the XG firewall GUI or CLI? Please also check for duplicate entry. GUI status: connecting, state 3, started 19s ago . Sophos Firewall Engineer 16. 236/22). Status is 'violation' and reason 'Local_ACL' with the IP address I need. Packet capture Aug 16, 2023. Can't find details anywhere. Hi, while browsing instagram from my phone using wifi (a vlan on my sophos XG firewall) instagram suddenly stops loading/refreshing. 10. If your password matches a password in the database, the firewall prompts you to change it. I now would like to export/download/save the captured data for offline analysis. This thread was automatically locked due to age. Communication over the bridge was possible. The XG packet capture states that there is a violation due to INVALID_TRAFFIC and the site never loads. You can filter the graphs by time (Live, 24h, 48h, Week, or Month). Display filter allows you to set additional filtering conditions such as the type of interface, ether type, source IP address, and destination IP address. In the Packet Capture i can see that the Traffic is dropped by LOCAL ACL. 200. What feature is impacted? Packet Capture GUI. 0 (from the XG help) or net 192. Firewall Rule: The service 'Valheim' is defined as: The packet captures I have been getting are as follows: (apologies for drop-packet as an Hi LHerzog, upon checking, the drop-packet-capture command does not support MAC filtering. It's my Gruenbeck Water softener softliQ SD21. X. host 192. Go to Monitor & Analyze> Diagnostic> Packet Capture. Here in the traffic captured Hi there. I would suggest maybe doing a packet capture from the GUI using a BPF string of a client IP address in VLAN 100 and port 443 My plan is to connect a Sophos XG (running as a SSL VPN site to site server, Software version SFOS 18. I had to disable "Block LAN to WLAN Multicast and Broadcast Data" (whitelisted the MAC of my XGs interface) in my Ubiquiti UniFi definition of the guest network. 1 MR-1-Build365) for a few days. I have issue with my Sophos XG firewall. I have tried a VPN to VPN any any rule, and still blocked. Traffic on port 80 and 443 pass without issue. Also, log viewer under Web says access is allowed. Given the various tests I made I don't think it is a L3 issue but rather a L2 issue (desktop can access the Internet flawlessly for instance). Since you mentioned setting up a community, it seems you might be using SNMPv2. 154 is my pc, 10. PACKET CAPTURE. 0 > vlan 1 br0. The remote_pktcap command captures packets on access points when a packet capture is running. Mehr Informationen zum Packet Flow der Sophos Fire Im just setting up my first XG (sfos v16) for a customer. We are not using the 'match identity' feature on the specific rule (LAN --> WAN Explicit Allow). This is observed for traffic The packet capture on the XG shows the packets are dropped. I will test the time frame after load the sip module until it does not work again in the next few days. pcap", where Port1 is the Hardware Interface you want do to the packet capture. I don't understand why In both the help from the XG Firewall and in the Knowledge base article: "Sophos Firewall: How to monitor traffic using packet capture utility in the GUI", article #123189 there is a reference for the BPF string for an specific network, with an example of net 10. If you have a question you can start a new discussion 1) SYN packet was getting dropped and not SYN Acknowledgement. 50307 > 31. The packet capture on the firewall from Diagnostics > Packet Capture would help you determine if the traffic is routed to an IPsec tunnel or not. Why is XG wants to match user if rule doesn't? Shouldn't it just let the traffic go? You can see Rule ID 23 which is my firewall rule for these Whitelisted websites yet NAT ID is 0 and Status is Violation. This specific traffic not able to find the firewall to move forward. I've checked the traffic with drop-packet-capture, and the firewall drop his own traffic because of "IP_SPOOF". com From few day "Invalid traffic - Could not associate packet to any connection" malachite over 1 year ago. To validate traffic, we use packet capture to determine where the packet is passing. 0 GA-Build339, now same with 18. Login. MediaSoft, Inc. Based on your logs though, the traffic is coming into port 4 and the firewall doesn't know where to send it. By Good Day, I'm trying to set up a port forward (RDP) from my WAN interface to a device on my LAN. You want to use SFOS as a upstream relay, right? I would not design anything like that - Use your email server for this kind of approach in any case. Sophos Firewall drops these packets and records them as invalid traffic events. Valheim Server is an IP 172. Sophos Firewall offers stronger password protection for the default super administrator. 2017-03-11 10:22:32 0102021 IP 10. Primary and secondary sophos link. Note: A packet capture shows a "violation" for DHCP and DHCP relay traffic. 5GHz or 5GHz. I tried to make a very specific rule for those IPs but it is still dropping. 64048 : proto UDP: packet len: 648 checksum : 61834 I did the packet capture on XG1 directly through the Unix shell. When you say internal dns do you mean dns on a server or domain Controller or the dns server that you can run on the Sophos? You may check the packet capture for the same using the command tcpdump 'port 53 , At least you should see the packet passing through the XG firewall. (Former Sophos UTM Veteran, Former XG Rookie) Cancel; Vote Up 0 Vote Down; Cancel +1 Budgie2 over 3 years ago in reply In this video I show you how to capture packets on sophos utm firewall@mancinitechwww,seanmancini. y" A host can be a source or destination to filter dropped traffic for a particular connection. 59451 > 185. 1, eth0. Enter BPF string: Specify a Berkeley Packet Filter (BPF) string. 2) If you SSH in to the XG and then press 5 > 4 and arrive to the console and type. Also, with wireshark, I can see ping request and reply. Please try tcpdump packet capture and check DOS settings, please also check arp details in the firewall, please disable redirect ICMP. 0 and gateway as XG Firewall However I get Status as "Violation" with Reason as "Invalid Traffic" for the ACK. The different types of mostly viewed packet status available on SonicWall are Forwarded, Generated, Consumed, Dropped, and Received. I did a packet capture looking for the translated port (161) and it appears that the Sophos is blocking the packets. So, to enable Sophos Firewall to respond to DNS requests from the WAN, go to Network > DNS and add a static DNS host entry. I checked the diagnostics-packet capture while sophos dropping my packages and i noticed that status "violation" and reason "USER_IDENTITY". We checked that you were not able to connect to the PBX server which is behind the VLAN1:100. In Sophos Firewall web admin> Diagnostics > Packet capture, toggle off packet capture, set the packet capture filter to "host 10. 17. Sophos XG210-HA (SFOS 18. since two weeks, I use a Sophos XG as ma Home Router. I have searched and searched and cannot find a reason code definition doc anywhere. Original need. There were no dropped packets. 2021-06-15 08:42:54 0103021 IP 51. USA. Sophos Endpoint; Sophos Firewall; Sophos Central; Sophos Factory; Sophos Mobile; Go to Diagnostics > Packet capture from the HO XG Firewall and click Configure. The details of the selected packet are displayed in the For all things Sophos related. - is my case similar to this one? one way pass through XG is blocked as asymmetric route. Cancel; Vote Up 0 Vote Down; Cancel; 0 AdrianFöder over 8 years ago in reply to BAlfson. 443 : proto TCP: R 861543794:861543794(0) win 8192 checksum : Code: Message: Code: Message: 0: Destination network unreachable: 8: Source host isolated: 1: Destination host unreachable: 9: Network administratively prohibited: 2 The core switch has a static route of 0. Wrap capture buffer once full: Select this option to continue capturing the packets even after the buffer is full. You can choose from the following options: Packet Capture: Captures all traffic on the LAN ports for a specified time. 204. 2021-04-20 13:51:03Firewallmessageid="01001" log_type="Firewall" log_component="Invalid Traffic" log_subtype="Denied" status="Deny" con_duration="0 put it like that: Sometimes, devices close a connection by bursting out multiple "i dont want to talk to you" packets. You can cross confirm that by re taking the drops/tcpdumps and running wireshark on initiator system. Fri Sep 2 15:43:48 2022 DEPRECATED OPTION: --cipher set to 'AES-256-CBC' but missing in --data-ciphers (AES-256-GCM:AES-128-GCM). org . How to get started; Frequently Asked Questions (FAQs) SophosID Registration; How to contribute and participate; If I use the GUI Diagnostics > Packet Capture and I specify a BPF string of "ether host 11:22:33:44:55:66" (with a real MAC address, of course), it immediately ends with no capture. 5060 > 41. Can you please post a packet capture snapshot? Check packet flow in CLI as well Client: Windows 10 SFOS: SFOS 17. Please go to MONITOR & ANALYZE-->Diagnostics-->Packet Capture Click on Configure. However, they seem to be being dropped because they have “Status Violation, Reason Local_ACL”. console>tcpdump 'host <destination IP> We have a problem with SFOS 18. It work's very good and my internet latency is very low since i switched from my old Asus Router to Sophos XG. 0 LHerzog over 3 years ago. Have just migrated all rules from a pfSense and everything has gone great (some minor problems) The customer has a cisco router located at their office that is tunneling to an external partners network. It is blocking my access to website themoviedb. set_channel_width [Wi-Fi interface name] [band] [Wi-Fi band] [channel_width] [number] You can choose Wi-Fi band 2. -XG (virtual machine on ESXi) resides on a DMZ and is reachable from internet. Can you try the following: 1) Is DoS flood currently enabled? Please disable and see if that makes a difference. the first time was with 18. I am trying to know how to select the interface on which the packets auto-generated by the Sophos of the site A will be sent to the site B. x = IP of the FTPserver) To see if there is any drop. This will only decrease the number of invalid traffic events logged by Sophos Firewall. 2 in the Branch Office, ping the host 192. The firewall uses cached entries to detect neighbor poisoning Sophos Community: Getting started. To bypass DoS inspection for a specified IP address or port, and after 100 packets, it checks the rate of the incoming packets. Both devices are just freshly reimaged from ISO image and backup restore was done on primary only. I only see incoming or forwarded packets. You can check the Interfaces with "ip a", and over the Web UI. I am trying to do a simple port forward on a newly set up Sophos XG install and I have hit a wall. Sophos to Acquire Secureworks. If the packets come above the configured packet rate, Sophos Hi ACS IT Thank you for reaching out to the Sophos community team, After changing the IP when you access the Firewall from the machine what is the observation in tcpdump and Drop packet on XG? I hope you have already reverted the "appliance access" command which you have enabled previously, please also confirm services related to UI are But this can also be a matter of your packet capture filter. Thank you. Hello all, We have Sophos XG firewalls at our offices and I am troubleshooting an issue with access to network shares at the branch site. Those devices appear every 1 or 2 seconds with those violations. 1 to probe and did a packet capture. The echo reply then comes from Port3 from the DMZ firewall and out port 9 back to the VM. WAN. CLI (click 4 Device Console) console>tcpdump 'host <dst IP> and proto ICMP. Verify that the Sophos Gateway type is set to responder: The following methods can be used to identify the issue: Check the packet capture for phase 1. The rule migrated from V18 MR4 isn't functioning, and neither We have a vendor managed NAT Router/Authentication device for free WiFi attached to eth1 on our Astaro ASG-120. XG will allow the first packet and drop The EU uses Sophos Central to disable the ability to bridge interfaces. AP > Switch > Sophos XG port LAG > bridge interface 0 br. However traceroute and ping go through OK. Hi, I've made a DNAT to forward some ports to a server behind the Sophos XG, but it doesn't seem to be working, If a user sends a packet that doesn't match a current connection, Sophos Firewall logs this as an invalid traffic event. tflags=0 connid=975732160 masterid=0 You can restrict the packet capturing to specific types of packets. The sophos is showing so many invalid logs and I don’t know what’s really the issue. Further to this, I was able to reproduce it again and performed a packet capture. If you have a question you can start a new discussion If you select DNS as the admin service, Sophos Firewall doesn’t directly start responding to DNS requests from the WAN. I see the items below repeated over and over when in the normal state when accessing over SSH. Attached also the Device Access: Does anyone know how to fix that or why are these Requests dropped ? I am grateful for every tip! There has been a bug for quite a few versions now in the Display Filter on Packet Capture, rendering one of the options unusable. It does not failback. If you select DNS as the admin service, Sophos Firewall doesn’t directly start responding to DNS requests from the WAN. I would like to know if there is a way to output a pcap from the Packet Capture in the web session or from the TCPDUMP in the console? Discussion: I really like the functionality of the being able to capture and sort the packets but would like to be able I saw nothing saying firewall rules needed to be created to allow internal traffic between the VLANs on the DHCP service, but I created some - just in case - but that hasn't made any difference. 20, LAN Zone) wants to watch a video on my Synology (192. The Packet Capture utility packages of Sophos XG Firewall conform to the specified criteria and display the package values in different fields. Hi all, We're fairly new to Sophos XG but we have our firewall rules set up and working so far. Also if there are no drops, please do a . 0 (from the KB article). An example of the packet capture: If you connect any single system directly to the LAN port of the firewall and check the status. These packet drop could be the TCP RST or TCP FIN packets that all the firewalls drop to prevent TCP RST/FIN attack. However, these examples will not work (i. . use drop-packet capture & tcpdump command line utilities or packet capture utility on UI Check antivirus service status from UI – [System services > Services] or from CLI by running the command below. Sophos Firewall: Monitor dropped packets using CLI KBA-000004859 Jul 06, 2024 0 people found this article helpful. Not sure what the next steps would be . I followed the documentation and watched the DNAT portions of the video linked on the NAT RULES page. Sophos Firewall: Monitor traffic using Packet Capture Utility; Thanks, To_Azure_XG-1{27}: INSTALLED Does anyone know if the packet capture feature is pre- or post- rule application? I'm trying to identify exactly what XG is tagging as TOR Proxy traffic (I think it is a Google SSL tunnel used for Apps Outlook Sync) but I'm not seeing any packets in PCAP that match the destination IP/port shown as being denied in the App Filter logs. For the XG the session has ended so it drops the packets from the webserver tcp 443 to random high port like 51234 to the client from which the connection has been started before. Harsh, for this statement - You'd have to configure the static route for the networks Hello Folks, well i got a problem with my Synology Storage. Lets get the information down. All firewalls drop multiple TCP RST and TCP FIN packets to prevent attacks. log: ips: Intrusion prevention and application filter To view the current status of DoS attacks, click the link provided. Click the slider to turn on or turn off Packet capture. This shows port 68,67 status viaolation, reason Local_ACL. From CLI. So A packet capture shows a "violation" for DHCP and DHCP relay traffic. To be specific, if you select the log function in the FW rule then, the logs will be logged in I create a forward rule for traffic on a particular port to an ip address. 9 MR-9 Hello, I made the configuration for L2TP connection as described in KB Sophos. My Computer (192. Sophos Firewall uses the Address Resolution Protocol (ARP) and Neighbor Discover Protocol (NDP) to enable communication between hosts residing on the same subnet. 3) at the top of my packet rules list. My plan is to connect a Sophos XG (running as a SSL VPN site to site server, Software version SFOS 18. 10) to destination(10. Pinging the XG's WAN IP works, however that would be cause of the local ACL exception. log_type=Firewall log_component=Invalid_Traffic log_subtype=Denied log_status=N/A log_priority=Alert Please check with Packet capture, tcpdump and drop packet capture traffic is hitting the firewall. This video shows you how to identify dropped packets using the log Unfortunately in the log I've seen that the traffic is using the rule but when I analyze traffic using XG Cli (drop-packet-capture) I've always seen some entries like this: 2017-02-05 13:26:10 0102021 IP X. PCAP on ESP packet On SFOS, capture the ESP packets (using tcpdump), Note SPI filed of the packet from the appropriate from 'ip xfrm state' cli (example shown below) Sophos XG Firewall: How to create a hub and spoke IPsec VPN. What is the severity of the issue? (High, medium, low, minimal) Medium Summary of the issues: Observed behavior (What it did or didn’t do): Doesn't Work Desired behavior (How is it expected to or should behave): Should Work Like it did in EAP 1 How do we reproduce it (Provide instructions to help us reproduce the Description:Welcome to our channel! In this video, we present a step-by-step guide on how to start packet capture in Sophos Firewall, a vital tool for real-t Because of this, you may have to run the tcpdump for a minute or so to actually capture some syslog packets. However, as per drop packet capture you have shared, apart from FIN/RST packets, SYN Packets are also getting dropped. I updated that and now in the packet capture I see a firewall violation but in the firewall You can no longer post new replies to this discussion. 168. Thank you for your feedback. Cancel; Vote Up 0 Vote Down; Cancel; 0 rfcat_vk over 3 drop-packet-capture 'host <IP address> and port not <port number>' Set the interface on Sophos Firewall to send packets from. 3. I have done the "drop packet-capture", it might as well been written in Recreate the issue to capture packets. Sophos Firewall: Connection fails for remote access IPsec clients when IPsec acceleration is - From XG I can ping the hosts behind the red and reach remote desktops and everything, but from Red I can't ping the hosts behind the XG. pcap capture and open it with Wireshark to see if it provides more info Configuring an XG for VoIP 2ServeErik over 5 years ago I need to prepare a XG106 (SFOS 17. Primary use for an XG would be packet capture and analysis. LAN. I've added the DHCP relay to the VLAN port and pointed to the DHCP server. 1 MR-1. 15 and ICMP" as the filter string to capture Hi, presale question. DMZ. Is it possible to download the packet capture created via the GUI? This website uses cookies to make your browsing experience better. An other useful thing is packet capture you can see if and probably why something like DNS is blocked. I’ve screenshotted the invalid traffic log in Sophos in this discussion. pcap" "Sophos Firewall checks the data packets for conntrack entries. Can you please help me in this case? Thanks in advance, Still unable to ping anything on the inside network. DMZ FW packet capture: There's really only 1 zone involved - PortA8 is a LAN source, so it seems that the source and destination should both be LAN, but it looks like the XG thinks they are in different zones, although I can't find a reference to what the zone numbers correspond to. 218 (that is the remote biometric sensor) get a lot of assured and unreplied state connection. Turn on Publish on WAN. 2) So if SYN packets are forwarded, as per this wireshark packet capture, below show be the packet flow : Initiator > Responder SYN Responder > Initiator SYN-ACK Initiator Hi everyone. Enter the details as follows: I have captured packets with the GUI Packet Capture Tool. I can ping the file server and NSLOOKUP resolves hostnames and IP address. They get the IP from XG on the RED interface. quiet: Display a summary only at start and end of the ping sequence. 10) and if there is any reply packet coming from 10. When printing, the printer You could try to check a packet capture of such a job, if you know the service ports. I have done the following to try and get this working: SNMPv3. 0 Sophos Firewall Technician 18. You'll be able to see the Rule ID of a packet with 'Forwarded' status. In the Advanced Shell of Sophos Firewall, you could type drppkt host <hostname or ip-address-of-website> and port <web-site-port> for example, # drppkt host sophos. Click here to see the XG to XGS migration documentation. In the packt Captue I have the following message: PORT: 1701 STATUS: VIOLATION REASON: LOCAL_ACL In Device Access everything is released. I have a packet rule setup that blocks all traffic from this interface to all our internal network segments (eth0. Use drop-packet-capture commands to monitor dropped packets. From problems with certificates, I have become aware that my DNS resolution for internal hosts and the xg itself is not working. 0-20. Sophos Firewall. Violation: If a policy violation occurs, the device drops the packet and shows this status. What to do. But with one device I can not connect to the Internet. Frames are coming to the firewall, but the XG is not answering: see packet capture below (MAC address was changed for privacy reasons) I noticed packets are dropped because of Violation Local_ACL. 19. Click Clear to I have been trying and failing to get SNMP monitoring working for my Sophos XG firewall using PRTG. Execute the following command " console> drop-packet-capture "host x. 0. Currently all of the VLANs (except the test network) are configured on the Sophos and I am able to ping the devices from the Sophos. To start packet capturing, the value of the ap_debuglevel parameter must be equal to or greater than 4. A nightmare! To understand why XG was blocking file trasfer via skype, I went to another brand to understand which domains to unlock. Related information. Hi Hieu Doan. You can see graphs for latency, jitter, and packet loss for each gateway in the SD-WAN profile. 2 and proto ICMP; From the host 192. When I run a Drop-Packet-Capture command I see "log_type=Firewall log_component=Identity log_subtype=Denied" for every entry. When you do capture a syslog packet, it will look similar to the example below. Even if you use an "any - any - any" rule you will see/count dropped packets. apijnappels Yes, i've check on log viewer but even if now it works I cannot see logs. Rule 0 is the default deny all rule usually at the bottom of the firewall weight scale. license_status: Shows if the license is active or not and if it's synchronized. 16 PUBLIC (dhcp): 192. 0 Packet Capture still shows traffic matching rule 23, which I am trying to exclude from the view. Conntrack entries are generated when connection initializing packets, such as TCP, SYN, or ICMP echo requests, are sent. 70. These fields include connection details and details of policies applied to the package in sections such as Rule ID, User / Group Name (User Name / Group), Web filter ID (Web filter ID), Application Traffic generated from the SSL VPN is assigned to the Tun0 interface, to confirm if traffic w ithin the SSL VPN is arriving at the Sophos Firewall, try running the following command from the Advanced Shell of the Sophos Firewall or the 2. Here's the Rules I've used to test on my computer: And here's a video of it happening with the standard Eicar file test. Go to Diagnostics > Packet capture I checked the diagnostics-packet capture while sophos dropping my packages and i noticed that status "violation" and reason "USER_IDENTITY". I don't know why as XG gives no clear explanation. If put Wireshark in between our DEFAULT GATEWAY and the THIRD PARTY ROUTER, I do not get any packets coming from the SSL VPN network, when I try to load the HTTPS site. Once I remove one of the allowed hosts from the list, this host of course looses it's connection. you can also paste the packet capture screenshot here for us to review. Packet capture may See packet capture below from both firewalls: LAN FW packet capture: I see the echo request come in from LAN to DMZ firewall IP via Port9 (LAN interface) and out via port 3 (DMZ Interface). Here are all packets counted, you don't allow passing the firewall. Buffer size: 2048 KB; Buffer used: 0 to 2048 KB; The buffer size is 2048 KB. eshjgixzusrlrwrnwwqlbxnpvsfotwxbxeqnilzrubakd