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Allow IPSEC traffic thru 871?

I am using Cisco 871's with Advanced IP Sec IOS for remote offices. I need to allow IPSEC traffic to pass thru the 871 to establish a client IPSEC tunnel. The client VPN software is Nortel's Contivity VPN.

How can I allow IPSEC traffic to pass thru the 871?

1 REPLY

Re: Allow IPSEC traffic thru 871?

If you are initiating vpn client connectivity from behind the 871 to outside you need to allow through the IPsec ports udp 500, udp 4500 and protocol 50 esp. I don't know Nortel's vpn client but Im sure they follow the Ipsec security standards.

try this on your 871 router.

access-list 101 permit udp any any eq 500 log

access-list 101 permit udp any any eq 4500 log

access-list 101 permit esp any any log

apply acl-101 to your outbound interface

access-group 101 in

HTH

Jorge

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