My company has just bought a Zywall 30w, which is plugged into a Cisco837 ADSL router (which is permanently on) through the WAN port, and then into a switch from the LAN port. All the addresses on the network are static on a range of 80.x.x.x with a subnet 255.255.255.192
The router is set as the default gateway on 80.x.x.129 on all the PCs. I've plugged the 30W in, set the encapsulation to Ethernet, turned the firewall off in SMT, turned off DHCP on the firewall, and tried entering various addresses as the WAN and LAN IPs. Whatever I do, I can't see out of the internal network, even to ping something. Zyxel are no help, so can anyone suggest what addresses I should be using, or what else I could try just to get the basic internet access working - I'll sort out the firewall later!
Why can't I just allocate one of my 'spare' static IPs to both LAN and WAN ports, as the only thing that Demon check is hostname, login and password which are all supplied by the router before anything reaches the firewall?
Oh, yes, the ISP is Demon Internet (Thus), who supplied the router.
TIA for any help.