Recently, I changed the config in my router to perform some basic NAT. Previously, I used a very effective firewall, but I’ve been forced to rely more on my router for protection for a time. I mapped out various private IPs to my public IPs to get connectivity to my organization’s website for the world. Ports 80, 8000, and 8080 tcp and udp in particular. However, while the site can be visited with no problem from outside of my LAN, I can no longer access it from inside my LAN via it’s name. The same holds true for my SMTP server. The internet can get to it by name, but my users cannot. I have to get to it via the private IP of it’s server. This is a major problem because my users need to access it from inside to communicate with me and changing all of their shortcuts to reflect the private IP would work, it’s a daunting task. I’ve checked the DNS settings and everything seems to be fine, but I’m obviously missing something.