I am having an issue where one host on my network cannot FTP or ping external sites but the rest can. My setup is with a single router with wireless and ethernet. With my host on the wireless I can FTP and ping fine but with my host on ethernet I can't ping or FTP external sites.
What makes this a bit strange to me is that I can wget from the ethernet host fine and it is resolving names correctly. Also I CAN ping the internet gateway immediately beyond my router so it doesn't seem like it's the routers doing. At this stage I'm at a bit of a loss as to how to diagnose the problem further.
Both hosts described are linux. The ethernet host that can't connect is a server with no GUI and it is the only wired host so I can't wireshark capture what is going on. Also router has no firewall enabled.
Anyone have any ideas as to what could be happening here?