Our UC520 has been configured for using a VPN setup. The router has been configured to allow port 500, 10000 and 4500. When we start a connection via the Cisco VPN Client it will connect and receive an IP-address. Looking in the UC520 ip route table we see the correct routes. Although when we try to ping the UC520 from the client it fails, when we try to ping the client from the UC520 it fails as well. The UC520 is configured with NAT behind a Netgear WNDR3700
These are the commands we entered for adding VPN functionality to the UC520:
aaa authentication login Foxtrot_sdm_easyvpn_xauth_ml_1 local
aaa authorization network Foxtrot_sdm_easyvpn_group_ml_1 local
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