Re: [cobalt-users] FTP problem

["E.B. Dreger" <eddy+public+spam@xxxxxxxxxxxxxxxxx>]

> Date: Sun, 27 Jan 2002 03:16:28 +0100
> From: Egil Nes - WebDeal DA <egil@xxxxxxxxxx>

> We have a problem with some users. Some of them that sitting
> back a firewall don’t get longer than this when they tray to
> login on FTP:

What firewall?  Sounds like it's a bit too aggressive on the
ports that it's blocking.  By default ("active mode"), FTP
establishes a data connection from the server back to the
client.  Unless they're using a firewall with an FTP proxy
service, you'll need to open up the "proper" port range for FTP
to connect back or to connect in passive mode (recommended).

In passive mode, the client makes all outbound connections; their
firewall needn't accept inbound TCP sessions on arbitrary ports.
Newer versions of ProFTPD even allow you to configure the passive
connection port range if you want to run a firewall on your end.

It's just the way that FTP and packet filters interact in
general.


HTH,
Eddy

Brotsman & Dreger, Inc. - EverQuick Internet Division
Phone: +1 (316) 794-8922 Wichita/(Inter)national
Phone: +1 (785) 865-5885 Lawrence
--

Date: Mon, 21 May 2001 11:23:58 +0000 (GMT)
From: A Trap <blacklist@xxxxxxxxx>
To: blacklist@xxxxxxxxx
Subject: Please ignore this portion of my mail signature.

These last few lines are a trap for address-harvesting spambots.  Do NOT
send mail to <blacklist@xxxxxxxxx>, or you are likely to be blocked.