Linux - NetworkingThis forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.
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Posting a terse question like this isn't usefull, please try to include as much info if you can.
Check your ftp daemons verbose/debug/error log output, your firewall policy/rules, TCP Wrappers and (x)inetd config if run from (x)inetd, your ftp client (passive ftp?), and include any logs/configs necessary.
That's the thing. All of a sudden we start getting calls from customers that they can't ftp. there is nothing strange in the logs. No wrappers and no iptables, chains etc. It just stops. we restart xinetd and its fine for an indefinite amount of time. I havn't had a chance to dump the traffic yet because we have no forwarning of what triggers this. Also there is no special or custom config in place. This thing has been running for almost 2 years without trouble.
I'm now running tcpdump 'port 21 or 20' > ftpdump &. This way when the server stops I can go back and look at the events just before. Ill keep you posted if your interested.
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