We currently are running a watchgaurd firebox 2 firewall, After a power outage we lost access to one of our external areas (lets user area1.company.com & area2.company.com). Area1 was available externally OK but AREA2 WAS NO LONGER AVAILABLE externally.
Numerous bounces of firewall/router/servers ensured.
So after a few days with no access to external area2 it suddnly was available again. There is a 5 port switch between the firewall and the router (allows another company to connect to the internet) and then 2 switches connected via a crossover behind the firewall. The swicthes are not managed.
We are wondering wither this is an issue with caching somewhere possibly out ISP or ARP tables on the switches. Any clues/help would be much appreciated.