NethServer Version: latest
Module: samba AD
At one client using NethServer for AD, Mail and Fileserver - for about 2 years now - and until a week ago working really well.
Clients are still all Windows7, upgrade to Win10 prepared, but not quite ready.
There are 5 PCs / Users in this AD using Computers.
The system is completely virtualized on Proxmox.
Backups are done at night to a NAS. (Both Proxmox and Nethserver backups).
Problem: Since a week three clients show up with AD “Trust” problems, with a note on the screen about Kerberos Timing problems. The PC has VERY current time, it is synched with NTP to the Nethserver. One or two reboots, and the problem goes away, usually til next morning.
The fourth PC is a notebook, and is on a different Network segment than the others, this part isn’t congested by backups. The fifth PC doesn’t run Panda AntiVirus, but McAfee Enterprise.
After two reboots, no problem shows up anymore…
We’re not sure if it is a Panda AntiVirus issue, combined with Windows Updates (03:00) and Backup over LAN causing latency…
Is there any way to increase the Kerberos Timeout in Nethserver’s AD?
Maybe a DB-Key or some other option?
Thanks for any ideas!