Joe-Ma Help with Unix, Apple, Web, Mikrotik and Cisco

Static NAT and PAT (port forwarding) NOTE: This particular config was done on a Cisco 877 ADSL / DSL router however its known to work on the Cisco 800 series routers in general including the Cisco 827 Cisco 837 Cisco 877W the Cisco 1720 Cisco 1721 Cisco 1750 series and the CIsco 1600 series Right so you have setup your Cisco DSL (or you only have one IP address from your ISP) and you have setup your DynDNS so that you can connect to the router. But now you what’s next? Well the usual next step, and probably the whole reason you did this in the first place is so that you can connect to the server from the outside world for a web server or a mail server. or some thing similar. The basic principal is that the connection is made in from the dialer interface (the external address) and passed to the internal address on a matching port. There is a limitation to this though, if you have two web servers both listing for traffic on port 80 but only one external address you are going to run into ...