I have an Zyxel broadband router (with IPSec vpn capability) providing Internet accesss to an SBS. I can successfully configure this using 1 or 2 NIC's (I assume with 1 NIC the firewall side of the ISA is redundant?). I am now trying to implement the vpn side of the router but I am struggling with the ISA side of things. I can succesfully open the vpn connection as far as the router but do not appear to be able to access anything on the LAN. I am currently only using 1 NIC, and the ISA still appears to be a problem. I have not configured RRAS/ISA vpn as I believe with 1 NIC this is not necessary, but is this where I am going wrong? In a bit of a 'pickle' and any suggestions would be much appreciated.