On Fri, Sep 17, 1999 at 14:11, Doug Thistlethwaite wrote: > I am working on adding a debian slink linux system as a fire wall to my > existing company network. When finished, we will have an ISDN router > connected to the linux firewall machine and a separate network card > connecting the internal network to the linux system. > > The mail server will be inside of the firewall and needs to receive SMTP > connections through the firewall.
> My question is how is this done? There are (at least) two ways to do this. Another user has responded to tell you how to punch a hole in your firewall for port 25. You can also use a "store and forward" system to prevent anyone from outside your network from talking directly to port 25 on your mail server. One such system is smap, and another is smtpd. I've had good experience with the latter, no experience with the former. If memory serves, I selected smtpd because it was pretty much a drop-in on a debian slink system that was the firewall. I used rinetd on that system for punching holes in the firewall (port 22, ssh, for example). http://www.obtuse.com/smtpd.html http://www.boutell.com/rinetd/ Luck, Pann -- What's All the Buzz About Linux? L I N U X .~. The Choice /V\ http://www.ourmanpann.com/linux/ of a GNU /( )\ Generation ^^-^^
