[Openswan Users] Ports used by Openswan and enable internet browing from clients

Paul Wouters paul at xelerance.com
Mon Jan 24 09:39:57 EST 2011

On Mon, 24 Jan 2011, Willie Gillespie wrote:

> UDP/IP port 500 for ISAKMP
> UDP/IP port 4500 for NAT-T

Note, this means connecting from ANY high port to your port udp 4500, and
from your udp 4500 to ANY high port.

> ESP/IP [also known as IP protocol 50]
> AH/IP (if you are using it) [also known as IP protocol 51]
> UDP/IP port 1701 is used for L2TP


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