A week ago the server stopped sending / receiving TCP/IP network traffic.
It's almost as if network traffic is being black-holed. i.e the network card is working, correctly configured, but any traffic sent to or being sent from the server is not usable.
The server can ping itself, i.e. on its own IP, eg 192.168.1.5 and loopback 127.0.0.1
When logging on I get an error message that "At least one service or driver failed during startup. Use Event viewer to examine the event log for details.".
I looked in the logs, but could see nothing of significance but there is only one possible error message that I can see:
4292 : The IPSec driver has entered Block mode. IPSec will discard all inbound and outbound TCP/IP network traffic that is not permitted by boot-time IPSec Policy exemptions. User Action: To restore full unsecured TCP/IP connectivity, disable the IPSec services, and then restart the computer. For detailed troubleshooting information, review the events in the Security event log.
If I boot a rescue OS from a CD on the same server, configuring the same IP parameters, the server is accessible, so this is definitely not a hardware issue.
Any suggestions please?