FortiClient VPN drops connection, what could be the reason?

Question

VPN

Good afternoon, a problem arose after installing the FortiClient VPN client on Debian 10 (without GUI) for no apparent reason. The disconnect occurs after 6-12 hours of connection, can anyone come across this scourge?

At the same time, it is not entirely clear, it seems that there is not a break in the connection, but the completion of its work.

Answer 1

After some time, the server requires the client to log in again, and if he has a u/p, then there is no 2factor token, so the session falls off. You need to increase the parameter (in OpenVPN it is called reneg-sec and is installed on both sides - I don’t know what it is called in forti).