Important note about SSL VPN compatibility for 20.0 MR1 with EoL SFOS versions and UTM9 OS. Learn more in the release notes.
Hello,
I have the following problem. We use a Sophos to access our network from outside via VPN. Now, when I'm connected to the network at work, I can establish the VPN connection without any problems. However, in other networks this fails with the error: “No response from the gateway”.
How can I fix this?
Hello Martin,
You may refer to this troubleshooting VPN errors: https://docs.sophos.com/nsg/sophos-connect/help/en-us/AboutSophosConnect/Troubleshooting/EventErrors/index.html
Further, to the affected remote users is UDP 500 on their ISP/Network? (you may try if you can telnet to port 500 or 4500 on the end machine to the other end?
Are they behind a Firewall? If yes, you may want to check if they are able to pass through their network firewall
Further, Are you connecting via IP address or a DNS name? Could you check the firewall side, using tcpdump: Sophos Firewall: How to TCPdump
While the affected users connect could you check if they are able to reach FW using command - tcpdump "port 500 or port 4500" / and Logviewer>VPN
Regards,
Raphael Alganes
Community Support Engineer | Sophos Technical Support
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