Port Forwarding on Apple Airport Express

supermonkey

Hi All,

I have just set this up to improve quality of voip (remcommended by my provider).

Are there any security issues in doing this?

Also, I have a router provided by my ISP. Unfortunately, the Wifi on it died, so I have an Airport Express plugged into it to provide my WiFi.

On adding the port forwarding it warns:
"Double NAT"
"this apple wi-fi base station has a private ip address on its ethernet wan port. It is connected to a device or nework that is using network address translation to provide private ip addresses. you should change you apple wi-fi base station from using dhcp and nat to bridge mode."

I think this suggest that I need to port forward on the original router & use the airport in bridge mode (which i was before). Problem is the original router has no way to port forward.

Can anyone help / advise?

Thanks

Figment

Sounds to me like you have both the router and the AirPort set as DHCP servers. You need to disable the DHCP server on the AirPort Extreme and let it get it's IP address from the router.