EZ VPN on SAA

We have an ASA 5505 configured for EZ remote VPN. If assign us a static ip address for the external interface in our test lab, it remains standing. When we go out on the remote site, which has a FiOS connection with dhcp for the external interface address, it gives every hour. When we put a pix there, it remains standing. At sh crypto isakmp his on the side remote shows an AM_WAIT_MSG2 (when the SAA is in place and the tunnel fails) I have to restart the SAA, and then the tunnel will come back to the top. For an hour. Also has anyone seen this type of behavior? It has been very frustrating and I have a tac case, but they said that configuration seems fine.

Today is your lucky day. I had this problem with my ASA5505 on my FiOS connection. Apparently Verizon ping your device before it will allow you to request or renew your IP address. When your ASA comes first in line they can it ping because you have ICMP enabled outside and the VPN tunnel is not. Once the tunnel is established and you do not use the split tunneling, they can't ping your ASA. If you drop the tunnel the dhcp lease does not expire. What I had to do was the tunneling split on the vpn group that I used for the ASA and enable ICMP on the external interface. After that the ASA would stay for good.

Tags: Cisco Security

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