Linux Mandrake 8.1 as Server now refusing connections to and from router
I've been running a web/mail/etc server on a box with Mandrake 8.1 for a couple years now, and sometime between this morning and when I got home afternoon, it started refusing my router access. Henceforth, I cannot access the network from this machine, nor can the rest of the network access it.
I checked hosts.deny and it had added my routers IP, so I removed it, still didn't work. Ended up removing all the entries in hosts.deny, no go. Tried switching the eth0 interface to DHCP instead of static, and it said "DHCP client not found." Have restarted xinetd, network, internet, and firewall several times, and even rebooted a few times now. Any ideas what happened and what to check next?