What ports does VPN Client use?

Unanswered Question

Hello there,

I am working to configure a dynamic tunnel to our cisco asa 5505, yet there is a firewall infront of our cisco asa and we need to open ports for the VPN Client to be able to reach the cisco device.

May someone please advice as to what ports the Cisco VPN client uses?

as we must open this ports, any help would be appreciated.


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Overall Rating: 4 (1 ratings)
mvsheik123 Tue, 06/16/2009 - 07:59
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below are the ports..

-->UDP ports 500, 1000 and 10000

-->IP protocol 50 (ESP), 51 (AH)

-->NAT-T port 4500



srue Wed, 06/17/2009 - 11:56
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AH is not supported anymore on 7.x and above (so no ASA has ever supported it).

TCP/UDP port 10000 is common also for alternatives to NAT-T.


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