Re: [squid-users] FTP with squid 3.1.3 failed

From: Henrik Nordström <henrik_at_henriknordstrom.net>
Date: Thu, 10 Jun 2010 22:29:03 +0200

tor 2010-06-10 klockan 10:29 +0200 skrev Tom Tux:
> Hi
> With Squid 3.1.3, I'm not able to connect a ftp-site (ex.
> ftp://ftp.gnu.org/). The squid-process tries to connect the ftp-server
> with a dynamic port (not tcp 21). This will be blocked through our
> firewall:
> tcp 0 1 squidproxy:37656 ftp.gnu.org:64789 SYN_SENT
> 106 562158 6442/(squid)

Works for me.

> I have a analog configuration with squid 3.0.STABLE 23 and there it
> works. The squid-process connect the remote-ftp-server with the normal
> port tcp 21.

The main difference is that 3.1 uses EPSV if supported by the FTP
server, while 3.0 uses PASV. So your firewall need to support EPSV FTP
data connection tracking if strict on checking outgoing connections.

Regards
Henrik
Received on Thu Jun 10 2010 - 20:29:09 MDT

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