I am installing a 12.04 server which has dual NICs with a static private and static public IP. For some reason the public IP is accessible for about 10 minutes and then the connection drops. When I log into the server and do an arp-scan eth0, then suddenly I can reach it from the public IP again. The WAN is behind a firewall. The syslog doesn't show anything out of the ordinary. Is there anything I can check within the server NIC settings?
Code:
Settings for eth0:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Advertised link modes: Not reported
Advertised pause frame use: No
Advertised auto-negotiation: No
Speed: 100Mb/s
Duplex: Half
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
Auto-negotiation: off
MDI-X: Unknown
Supports Wake-on: umbg
Wake-on: d
Current message level: 0x00000007 (7)
drv probe link
Link detected: yes
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