We have installed a NME-WAE-502 card in a remote Cisco 2811 router. The router is configured with a VPN-tunnel to the main site where the central inline wae resides.
From the remote site you can ping the central wae and vice versa. We can telnet back and forth as well.
The problem is that we cannot register the remote wae via the VPN tunnel...
The VPN tunnel works fine for other traffic, both tcp and udp.