Peggy Dunn Telecom Systems

Terminal Gateway
What are subnet masks? What's default gateway? How do I find out my external IP by typing a command?

Hi, just a bunch of questions around "TCP/IP Properties" box. Thanks.

In order to get your external IP, you'll normally need to go to a website - there isn't an easy way to find that out from the commandline.

If possible, you should use a protocol called DHCP to get your IP address/subnet mask/etc - it handles setting all that up for you.

Conceptually:
A subnet mask indicates how "big" your local network is so it can figure out what IP addresses it can talk to directly without going through a router. The gateway/router is a system that sits between your local network and the internet as a whole - it has the job of figuring out how to send your traffic out and get reply traffic delivered to you.

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