JD When you say SMTP can listen on localhost.... you mean it only listens on the smtp port (port 25) for *one* IP address in 127.0.0.0/8 block right?
Chris On Fri, Apr 22, 2005 at 09:44:34AM -0500, JD Runyan wrote: > [EMAIL PROTECTED] wrote: > >I'm trying to understand what loopback interface is used for > >and /how/ it is works. > > > >Anyone got any examples of how an app uses loopback interface > >effectively?? > > > >I vaguely know it acts like a remote node without > >actually being one. I'd like the details. > > > >Chris > > It is often used to provide daemons for your system to use, but that > you don't want available publicly. A common example would be to have > your SMTP server listen on localhost only. You could send emails through > it, but no one else could. The SMTP server would still be able to send > mail out to the Internet, it just wouldn't receive anything from the > Internet. > > -- > "If the fans don't come out to the ball park, you can't stop them." > --Yogi Bera > -- > [email protected] > http://www.kernel-panic.org/cgi-bin/mailman/listinfo/kplug-list > -- _______________________________________ Christian Seberino, Ph.D. SPAWAR Systems Center San Diego Code 2872 49258 Mills Street, Room 158 San Diego, CA 92152-5385 U.S.A. Phone: (619) 553-9973 Fax : (619) 553-6521 Email: [EMAIL PROTECTED] _______________________________________ -- [email protected] http://www.kernel-panic.org/cgi-bin/mailman/listinfo/kplug-list
