Weird FTP issue???
Jordan Gordeev
jgordeev at dir.bg
Mon Sep 3 10:06:28 PDT 2007
Michaela wrote:
> Hi all,
>
> I was wondering if anyone can possibly explain or give their expertise
> with this bizarre/weird issue if you will that I've been having while
> using such commands as portsnap, portaudit, fetch, etc.
>
> First off, I'm running FreeBSD v6.1. I have three (Internet) servers
> running the same FreeBSD version. However, one of the servers has been
> giving me trouble and I can't decipher whether or not it's a FreeBSD
> related issue or something else altogether.
>
> On this one server, whenever I try to use "portaudit", "portsnap",
> "fetch", or whenever I try to upgrade ports and it needs to "fetch" the
> updates the connections ALMOST always "time out". But what's weird is
> that I don't have the issue on the other two FreeBSD servers when they
> need to use the same commands.
>
> I can SSH to this (problem) server, ping to-from it, and everything
> else. It's gotten to the point where I thought it was a FreeBSD
> problem so I completely reformatted and installed the O/S. However,
> it's STILL doing the same thing. Upon trying to install certain
> distribution sets through FTP media, I'd get an error about it (FreeBSD)
> not being able to get a connection with the remote FreeBSD server.
>
> After that, I even went as far as changing network cards and it's still
> doing it. Using "netstat" while trying to use the commands shows that
> it's sending a "SYN" flag to the remote server, but no connection is
> ever established.
>
> I have all three servers plugged into the same router/firewall and have
> done so for years with no problems. This is the first issue of its kind.
>
> I'd greatly appreciate any insight, help, explanation, or something.
> This is getting really aggrevating.
>
>
> THANK YOU in advance.
>
>
> -- Michael
Hi, Michael!
Please, note that portsnap is not using FTP, but HTTP.
The first thing to do, when a problem like this occurs, is to use
tcpdump to capture a packet trace. Use tcpdump on the server and, if
possible, on the router/firewall and show us the results, if you can't
analyze them by yourself.
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