NethServer Version: 7.4
This afternoon I was confronted with a very odd situation. I rebooted my VPS server and after reboot the server was responding a few seconds, after 10 pings, the server doesn’t respond anymore: Not on pings, not trhough ssh nor webinterface…
Fortunately I can set up a VNC session (the VPS is running on proxmox) and I can access the terminal through that.
What should I do now to troubleshoot this?
I mainly use the server as mailserver (SOGo) with Samba4 AD account provider.
networking: eth0 is having an external IP addres (directly connected to internet)
eth1 is created through a dummy interface and is bridged so nsdc is installed using an IP on the green subnet.
I don’t know if it is related, but I did install nethserver-openvpn this afternoon. I removed that again through the terminal in the VNC session.
From the VNC terminal I can reach any IP address and webaddress through ping and nslookup, so networking looks like fine.
As soon as I stop shorewall, the webinterface is loading fine again. When I start shorewall, everything is blocked again. So it looks like shorewall is the culprit here.
any guidance appreciated…