I have an established VPN between a NetGear FVS114 in France and a Cisco 877 in the UK. Both routers show the VPN status as active but I cannot see devices on the other side of the link. Can anyone help to diagnose the connection and find a solution? It is an IPSec tunnel with pre-shared key. I'm pretty sure it has something to do with the firewall on the Cisco router (the Netgear router is very basic) but my knowledge of IOS is scant, so please bear with me. I used the SDM VPN wizard to set up the Cisco.