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Old 08-15-2018, 10:51 AM  
2MuchMark
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Join Date: Aug 2004
Location: Canada
Posts: 48,610
Quote:
Originally Posted by rowan View Post
Does your IP resolve? The one you're connecting from.

Do "host x.x.x.x" (whatever your IP is) from the *nix commandline and see if there's a timeout or unusual delay.
Yes it resolves.


Quote:
Originally Posted by BigFurry View Post
SSH into the server and try logging in locally via the 'ftp 127.0.0.1', to see if it also hangs at/after the pass too.

Could be some issue with the FTP server.
Yes this works.


I found something interesting: Get this:

According to the TCPDump, the server is sending a message after receiving the password, but the client is not responding. After 20 seconds, it times out. This is visible in the TCPDump itself.

So now wrap your head around this:

The CLIENT is not responding, to only that single message, and only from that IP Address.

In my particular case, the client is both a PC and a Mac, with different FTP Client softwares installed and tested.

The Client is also a few other computers too around the globe.

Get it? The server seems to be behaving normally. Certain clients, but not all, are not responding to the server after the password is sent.

I am so confused! This is the weirdest problem I have seen a really long time.
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