I'm trying to get a better understanding of MS ISA (SBS 2003) in terms of publishing servers and access control rules. So we have an internal SSL VPN device that we want to publish. I used "Create New Server Publishing Rule" to publish it on port 1443. It works great everywhere on the Internet other than my office, which is external to the office using MS ISA. Our office has a special network defined "ABC Corp" and we use that to allow us remote RDP access to the SBS 2003 server.
When I monitor for port 1443 usage, I see that *my office* hits the SBS protected networks rule, whereas other external systems can access 1443 just fine and get to the remote SSL VPN device.
I need help understanding/debugging this.