Dear all, I notice that the ssh connection is drop every exact hour, like in 8:00 , 9:00 , 10:00 ... What cron-job is causing this and how to change it? Install: Debian 8/9 + MariaDB + ISP Config 3.1
crontab -e or check your cron folder for any cron affecting your ssh that way or ask your vps provider. As @till said, no such cron job from ISPConfig side.
OK, thank you for the fast response. I guess then pfSense has such cron-job. It sits infront of the ISPConfig VPSes and probably closes SSH every exact hour...
Agreed, it probably is something external to your server. Fwiw I use/prefer pfsense and don't have that issue, so if that is the source, it is likely configurable to not do that.