I have a http sever provide service to internet, so I configured port forward in router. It’s fine for users access server outside company (URL: _http://mydomain.com:80/). But if the user is inside company, use above url to access the server is not work. The only way to access server is use inner ip like _http://192.168.1.213:80/.
network map picture: http://i56.tinypic.com/20i8dmr.jpg
I use wireshark captured tcp packets when I telnet mydomin.com 80，the result is can’t connect to server.
wireshark captured packet picture: http://i51.tinypic.com/zsl8ox.png
In wireshark captured packets, No 2-3 show the domain name resolution is success. No 4 my computer(192.168.1.37) access server using server outer ip(188.8.131.52). No 7 show the port foward is ok, the reply ip is server inner ip(192.168.1.213). No 8 the connection is reset (TCP Flag RST) .
Anybody know what’s the reason?