What is the IP ranges for the other networks? Are they the same subnet or different ones? Ned more info so we can determine the needs.. PS: Nice drawing ;P Thanks, ____________________________________________ George Vieira Systems Manager georgev@xxxxxxxxxxxxxxxxxxxxxx Citadel Computer Systems Pty Ltd http://www.citadelcomputer.com.au Phone : +61 2 9955 2644 HelpDesk: +61 2 9955 2698 -----Original Message----- From: Jose Luis Hime [mailto:jhime@xxxxxxxxxxxxxx] Sent: Friday, May 30, 2003 3:15 AM To: 'Ray Leach'; 'Netfilter Mailing List' Subject: RE: Problems with NAT The problem is that there are LAN C, LAN D and LAN E in other 3 cities, also! So, the rule: -t nat -A POSTROUTING -s LAN A -d ! LAN B -j SNAT --to Firewall_IP_address would work for LAN B, but not for the other LANs. All LANs are connected to the same router. Thanks again, Jose Hime -----Original Message----- From: netfilter-admin@xxxxxxxxxxxxxxxxxxx [mailto:netfilter-admin@xxxxxxxxxxxxxxxxxxx]On Behalf Of Ray Leach Sent: Thursday, May 29, 2003 12:55 PM To: Netfilter Mailing List Subject: Re: Problems with NAT