determine whether ip, is the ip of your intranet

domain name is just the translation of IP. You can add DNS related knowledge

three methods, the difficulty is from low to high, and the hole dug is from deep to shallow

1. setting Host for all intranet clients
   is the easiest, but Tiankeng, every new computer, you have to set it manually
2. add a resolution record to the private network DNS
   in the middle of the difficulty. Routers generally don't change the DNS to the Web interface. You need to change the configuration file on the command line. The advantage is that if you integrate with DHCP, you don't have to worry about it in the future
.
3. it is the most difficult to set up DMZ
   . You need to change the network topology, and you need the excellent technology of the router manufacturer to avoid bug,. The advantage is that IP access can also be solved. In the future, you don't have to worry about
   . Since the subject of
   has raised this problem, it should be stated that the local loop of router DMZ has bug .