Web Server & SSH (Airport Extreme) Problem

[mobbbx]

Hi,

I'm trying to setup a web server and SSH on my ubuntu server. My current network setup is:

internet --> Linksys BECMU10 (cable modem) --> airport extreme --> ubuntu server

However, i am unable to access the webpage and SSH from WAN.

What i've tried so far:

port forward 80 and 22 on airport extreme via airport utility


reserved a DHCP ip for ubuntu server (10.0.1.201) via airport utility


enabled NAT Port Mapping Protocol


nmap on ubuntu server (10.0.1.201) shows port 22, 80 and 3306 open


nmap on Linksys BECMU10 (192.168.100.1) shows port 21 and 80 open


nmap on airport extreme (10.0.1.1) does not show port 22 and 80 open even though i've setup port forward for 22 and 80


Since what i've done did not allow me to access the webserver from WAN, i changed my network setup to:
Internet --> Linksys BECMU10 --> ubuntu server

After the new setup, nmap on BECMU10 shows port 80 open and ubuntu shows that port 22, 80 and 3306 open. However, i still cannot access and SSH ubuntu server from WAN.

Any help is greatly appreciated!