On a Router,How to turn on OR off UDP port 500 for ipsec traffic

[Zaheer_Assariya]

I wanna find out how to turn on /Off udp ports on a router and how to turn on protocol 50 and 51.

[sachinraja]

hi zaheer,

it just gets turned on, when you apply and enable isakmp on the router.. udp port 500 refers to isakmp..

protocol 50 refers to ESP and 51 refers to AH.. so.. once you enable your remote/site-site access on the router, you have all these protocols enabled automatically.. there are no explicit commands to enable this.. hope you have the configuration details..

all the best !!

[tyagivijay]

Hello,

You need to make access-list like:--

access-list 108 permit tcp any any eq 50(choose Source & Destination address accordingly)

& bind it to the appropriate interface.

Thanks

Vijay Tyagi