Cannot Access Web Server from WAN

[abhi1024]

We asked our ISP to provide a new static IP address with a dns mapping to host our website (Paradox Web Server).I have done the NAT on the firewall and opened ports for the WEB.The problem is I am not able to see the web page from WAN.It works fine with LAN.I am assuming that some configuration (Routing) has to be updated at the CISCO router.
I am new to CISCO and have never configured it .
Please help me to resolve this issue
Thanks
Ab

 

[lambent]

It'd be good if you can give more details like configurations and simple network diagram like this:

Internet---WAN router---PIX---switch---LAN router---Serve switch---Servers

 

[abhi1024]

WAN router ---- firewall----switch---server

NAT done at the firewall.(public to private conversion)
Also opened port (80) on the server that would be hosting Paradox Web Server
ISP mapped domain name (ab.companyname.com) to the public IP address requested.
I can ping the public IP address from LAN,even can open the website from LAN but it fails outside LAN with error message "Page cannot be found"

 

[lambent]

can you do this in your WAN router?

"telnet <web server NATTED public IP> 80"

If you allow ICMP on your firewall, try to ping the public IP from your PC and the WAN router.

Also do a nslookup in your PC from a remote location and check if the domain name is correctly mapped to the NATTED public IP.

Let us know the results.