Hi all, very happy to have your help.
I'm working in a building and my computer is behind a router. In the building LAN, my computer's IP is 192.168.1.1 but outside the computer LAN my computer's IP is NAT, how can I find the external IP and external Port of my computer after is NAT by building router.
Thanks very much.
Thanks for your question dinhviethai.
You External IP address would be shown on our [URL="http://www.whatismyip.com"]Main Page[/URL] in large bold text.
Your External Port is dependent on what your doing. If your just browsing the Internet, you would be using many ports.
Your Internal IP address is not very likely to be 192.168.1.1 though it is possible. That IP is usually the Gateway address which is also the LAN address of your Router. Most routers are setup by default to use DHCP to assign IP addresses in the 192.168.1.100 to 192.168.1.150 range.
If you type "ipconfig" at the Command Prompt it will tell you your DNS, IP, Subnet Mask and Default Gateway. The command prompt is at Start > Run > type "cmd" then press enter.