How would I portforward to host a Garrys Mod server?

[Kalphiter²]

Windows 7 Home Premium 64-bit.

Hit the start key

Type "cmd" and hit enter

Type "ipconfig" and hit enter

Tell us your "IPv4 address" or use it as the address for port forwarding

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[[Maxx]]

When port-forwarding, use you internal IP.
When connecting, use your external.

How do I find my internal ip address?

[Kalphiter²]

Hit the start key

Type "cmd" and hit enter

Type "ipconfig" and hit enter

Tell us your "IPv4 address" or use it as the address for port forwarding