Steve, If the two servers are on the same network (the PSN in this case) and it is not subnetted with other equipment, then the GNATBox should have nothing to do with them talking to each other. They should work the same as they did when external to the firewall. If you do have the 192.168.1.xxx network subnetted and are using the GNATBox as the gateway then it could effect them. I'm assuming this is not the so.
More of what I suspect is that somewhere an old address is being used. First check your hosts file (also lmhosts if on Windows). I also make an asumption here that the external address in your GB configuration are the same address that the machines had when they were external. If the entries are correct there then you may have a hardcoded external address in one one (or more) of your html code, cgi scripts, or perl code. I would check them in this order also. If your servers are using an external DNS server and references to the other system is by name then the DNS querry will return the external address. Accessing each other by their external addresses would cause this traffic to go to the firewall where it would route the packets back to the PSN address where the machine actually resides. In this case the filters would come into play. Sending your local traffic through the gateway (GNATBox here) is not a very efficient network setup and probaly undesirable. T wo solutions come in mind for this. First and easiest to setup would be to create entries on each system in the hosts file for the other system referencing its private IP address on the PSN. Normally the host file is referenced before a DNS lookup is performed (the order is configurable on some operating systems). Keep in mind if you do this then this file must be manually updated any time there are address changes to either system. A second solution would be to run your own DNS server on the PSN. This DNS server would resolve to the local addesses for all servers on the PSN. John Stokes ---------- Original Message ---------------------------------- From: "Steve Parker" <[EMAIL PROTECTED]> Reply-To: <[EMAIL PROTECTED]> Date: Mon, 28 Aug 2000 13:30:24 -0400 >The situation is that from an html page on one web server, it makes a call >to a cgi/ Perl script on another web server on the same network. (i.e. web >server 192.168.1.73 (with an external IP of 216.90.250.35) makes a call to >another web server 192.168.1.2 (with an external address of 216.90.251.28) >which actually runs the Perl script) > >When both servers were on the external network, there were no problems >whatsoever. As soon as I moved both servers onto the PSN, the problems >started occurring. > >I'm not a html, cgi, Perl, of any other type of programmer so I have no idea >what else to try to do.
