Permit GRE protocol (permit gre host X host Y), where X is source host located somewhere in the Internet, and Y is public address of Your host. Accordingly, permit GRE on internal interface. 1723/tcp is just for control link.
Hi,
How do I permit GRE traffic to be redirected to an internal host ? I already add port 1723 redirection. I want to use MS PPTP.
I have a 1841 router with IOS version 12.
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