RFC 1700, IANA Assigned numbers has the full list of IP Protocols and
assigned TCP/UDP ports.

TCP is IP Protocol 6

UDP is IP Protocol 17

The GRE part of PPTP is IP Protocol 47

IPSec ESP transport is IP Protocol 50

Here's one reference:

http://www.cis.ohio-state.edu/htbin/rfc/rfc1700.html

 Dan Langille wrote:
>
>
> At http://192.168.1.254/cgi_u/localnapt, in the protocols
> drop down list
> box, I see: TCP, UDP, PPTP-GRE, ESP-IPSEC, and 1..255.
>
> What are 1..255?
>
> Where is ICMP?
> --

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Received on Tue Dec 5 13:53:35 2000