Andrew, I think there may be a way around this though if your IOS supports it. You can now map an external IP address's port to an internal address's port... You may be able to map one external IP port number 25 to internal IP address 1.1.1.1 and one external IP port 110 to IP address 1.1.1.1 .... This is just a guess but I do know that you can map external IP address ports to internal ip address ports.. Heres my sample config for proof...of course I made changes to protect the innocent. I have ver 12.03T on a 1750..... HTH Cory ! ! interface Serial0 ip address x.x.1.85 255.255.255.252 no ip directed-broadcast ip nat outside encapsulation ppp no fair-queue ! interface FastEthernet0 ip address 192.168.1.6 255.255.255.0 no ip directed-broadcast ip nat inside half-duplex ! ip nat inside source list 1 interface Serial0 overload ip nat inside source static udp 192.168.1.5 6699 interface Serial0 6699 ip nat inside source static tcp 192.168.1.5 5632 interface Serial0 5632 ip nat inside source static tcp 192.168.1.4 80 interface Serial0 80 ip nat inside source static tcp 192.168.1.4 110 interface Serial0 110 ip nat inside source static tcp 192.168.1.4 53 interface Serial0 53 ip classless ip route 0.0.0.0 0.0.0.0 x.x.x.x no ip http server ! access-list 1 permit any access-list 2 permit 777.777.777.777 access-list 2 permit 192.168.1.0 0.0.0.255 -----Original Message----- From: Andrew Larkins [mailto:[EMAIL PROTECTED]] Sent: Thursday, September 07, 2000 5:59 AM To: E A Moran; [EMAIL PROTECTED] Subject: RE: IP NAT I tried this once and it does not work.... For a static nat to work the internal ip is translated to one valid external ip.. When I tried to do exactly as you mentioned I got an error message that the internal ip is already mapped . -----Original Message----- From: E A Moran [mailto:[EMAIL PROTECTED]] Sent: 06 September 2000 04:24 To: [EMAIL PROTECTED] Subject: Re: IP NAT NAT is a one-way procedure by default. You define Inside and Outside Interfaces. You define which way NAT runs. Check out the NAT commands off of Cisco's website. -- E A Moran Network Engineer CNE,MCSE,CCNA,CCDA TeleCommunication Systems, Inc www.telecomsys.com <http://www.telecomsys.com> "Jin Tam" < [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> > wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED] <[EMAIL PROTECTED]">news:[EMAIL PROTECTED]> ... I have a server with an internal IP address of 1.1.1.1 and I have 2 external addresses 2.2.2.1 and 2.2.2.2. How can I translate incoming destination addresses 2.2.2.1 and 2.2.2.2 to 1.1.1.1 while keeping outgoing packets from 1.1.1.1 from being translated. Thanks is advance. ___________________________________ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
