Important note about SSL VPN compatibility for 20.0 MR1 with EoL SFOS versions and UTM9 OS. Learn more in the release notes.

SSLVPN connection just stops responding

I have this really strange problem where SSLVPN connections crash after 6pm. Setup as a full tunnel and works fine throughout the day and then at night time everything just dies. When first connecting to the VPN everything works fine for about a minute and then suddenly everything stops. Can't ping the Sophos firewall, can't ping the internet. Can then disconnect and reconnect and it starts working again for around a minute then dies again.

I can't find anything in the SSLVPN logs on the client. There's nothing obvious in the firewall logs. There's no time restrictions. I've even put in a VPN -> WAN allow all rule as a test and the same thing happens.

I don't even know where to start diagnosing this. I can't view live logs because it drops all internet connections. Any suggestions?



Edited TAGs
[edited by: Erick Jan at 1:43 PM (GMT -7) on 23 Sep 2024]