> -----Original Message----- > From: Dan Johansson [mailto:[EMAIL PROTECTED]] > Sent: Thursday, October 03, 2002 11:12 AM > To: [EMAIL PROTECTED] > Subject: [courier-users] Courier behind a Firewall > > > Hi, > > I�m new to Courier and this list so please be kind to me. > > I�ve set up Courier succefull (I think) on a host in my network. > This Network is behind a Firewall (consisting of a Router (doing NAT) > and a hardened Linux box). Courier works fine for "internal" mail, and > now I would like it to recieve mail from te rest of the world. > So my qustion is what to do on the FW. Schould I only put > some general- > gateway on my FW that only passes TCP-connections on port 25 from > the WAN sid to the Courier Mail-Server on the LAN side.
The Courier box will need to have a static IP to the outside (probably via a static NAT on your router). Then just tell the firewall to allow connections to port 25 on your Courier box. I could give you instructions for a Cisco firewall, but I'm not familiar enough with iptables (or ipchains). > Or do you have > any othe suggestion (No I don�t want to run my mailserver on the FW). Running extra software on your firewall is generally not a good idea if you can avoid it. If you do, then a vulnerability in your other applications could give a hacker direct access to your firewall box. > > Regards, > --Dan Bowie ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ courier-users mailing list [EMAIL PROTECTED] Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
