Is there a way of specifying a particular public address if there is more than one bound to the external interface? A la
nat 123 config if re0.2 log same_ports redirect_port tcp 10.0.0.3:22 102.10.22.1:2222 ? On Tue, Jul 12, 2011 at 5:19 AM, Bill Tillman <btillma...@yahoo.com> wrote: > > > ________________________________ > From: Dan Nelson <dnel...@allantgroup.com> > To: Michael Sierchio <ku...@tenebras.com> > Cc: freebsd-questions@freebsd.org > Sent: Mon, July 11, 2011 1:07:31 PM > Subject: Re: IPFW Firewall NAT inbound port-redirect > > In the last episode (Jul 11), Michael Sierchio said: >> Sorry for the naive question, but most of my old rulesets still use >> natd, and I've only used built-in nat for outbound traffic. I'd like >> to redirect certain ports on certain addresses to the same ports on >> internal (RFC1918) addresses. The examples in the man page aren't >> helpful, and the handbook still seems very natd-centric in its >> examples. Thanks in advance. > > I use this at the top of my /etc/ipfw.conf file (re0.2 is the interface > corresponding to my internet connection) : > > nat 123 config if re0.2 log same_ports redirect_port tcp 10.0.0.3:22 22 > add nat 123 ip from any to any via re0.2 > > , which redirects incoming port 22 connections to 10.0.0.3. If you want to > redirect more ports, add more "redirect_port tcp host:port port" expressions > to the end of your nat line. I believe you can run the nat config command > manually with a new list (as in "ipfw nat 123 ...") to add/remove entries > dynamically. I'm not at home to try it, and don't want to risk losing my > remote connection if I mess up :) > > -- > Dan Nelson > dnel...@allantgroup.com > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org" > > > I have used IPFW for many years now. As for forwarding traffic from your > gateway to internal machines I've always used the following in my > /etc/natd.conf file: > > dynamic > redirect_port tcp 10.0.0.254:80 80 # Apache Webserver inside my LAN > redirect_port udp 10.0.0.214:1194 1194 # OpenVPN Port > redirect_port tcp 10.0.0.213:443 443 # OpenVPN Port > > Of course you will need a line like this in your /etc/rc.conf to get natd to > read this file: > > natd_flags="-f /etc/natd.conf" > _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"