Hello again, I wanted to add 2 other IP address to my server in order to manage DNS from ISPConfig (and not having to create a NS for each domain I host). So I added another IP from ISPConfig. When I pinged this new IP, I had no response (pinging the main IP worked). So I checked the "Network" checkbox in another menu (I don't remember which one sorry) and since then, the box does not respond on any port. I guess it has messed something. I'll have soon access in rescue mode. I'll edit the /etc/network/interfaces to revert it back but do I have to change another file/db record? Thanks
Thanks. I've reinstalled everything (I can as I test, in production I can't describe the mess it would have been). Now it's OK. However I won't check again the "System > Server Config > Server > Network Configuration" as I'm convinced it broke the network access. I think it rewrote the interfaces file with wrong values.