MN-700 cannot open the 80 port

I need setup a web server in my LAN, and I setup the
portforwarding with MN-700 (TCP 80 to 80). The web server
works in my LAN, but cannot access from the WAN. I scaned
the port from the WAN side and found the port 80 closed.
Thereafter, I setup a new portforwarding from 800 to 80,
and I can access my web server through the port 800. I
think this maybe firewall or something taking effect, but
I couldn't find the settings.
The FTP and mail servers work well by the portforwardings.
The firmware is uptodate.
Thanks for answer.

Are you sure your ISP isn't blocking port 80 for you?

Some ISPs do this.

--
Jason Tsang - Microsoft MVP

Find out about the MS MVP Program -
http://mvp.support.microsoft.com/default.aspx

"Liu Xiao" <(E-Mail Removed)> wrote in message
news:237101c5340b$44471180$(E-Mail Removed)...
>I need setup a web server in my LAN, and I setup the
> portforwarding with MN-700 (TCP 80 to 80). The web server
> works in my LAN, but cannot access from the WAN. I scaned
> the port from the WAN side and found the port 80 closed.
> Thereafter, I setup a new portforwarding from 800 to 80,
> and I can access my web server through the port 800. I
> think this maybe firewall or something taking effect, but
> I couldn't find the settings.
> The FTP and mail servers work well by the portforwardings.
> The firmware is uptodate.
> Thanks for answer.

I'm sure the port 80 isn't blocked. I can use it with
another router
>-----Original Message-----
>Are you sure your ISP isn't blocking port 80 for you?
>
>Some ISPs do this.
>
>--
>Jason Tsang - Microsoft MVP
>
>Find out about the MS MVP Program -
>http://mvp.support.microsoft.com/default.aspx
>
>"Liu Xiao" <(E-Mail Removed)> wrote in message
>news:237101c5340b$44471180$(E-Mail Removed)...
>>I need setup a web server in my LAN, and I setup the
>> portforwarding with MN-700 (TCP 80 to 80). The web
server
>> works in my LAN, but cannot access from the WAN. I
scaned
>> the port from the WAN side and found the port 80
closed.
>> Thereafter, I setup a new portforwarding from 800 to
80,
>> and I can access my web server through the port 800. I
>> think this maybe firewall or something taking effect,
but
>> I couldn't find the settings.
>> The FTP and mail servers work well by the
portforwardings.
>> The firmware is uptodate.
>> Thanks for answer.
>
>
>.
>

Make sure you set it up under PERSISTENT Port Forwarding
cause if you do it under application-triggered port
forwarding, if no requests to open the port originate
BEHIND the router, the port won't be opened.


>-----Original Message-----
>I need setup a web server in my LAN, and I setup the
>portforwarding with MN-700 (TCP 80 to 80). The web server
>works in my LAN, but cannot access from the WAN. I scaned
>the port from the WAN side and found the port 80 closed.
>Thereafter, I setup a new portforwarding from 800 to 80,
>and I can access my web server through the port 800. I
>think this maybe firewall or something taking effect, but
>I couldn't find the settings.
>The FTP and mail servers work well by the portforwardings.
>The firmware is uptodate.
>Thanks for answer.
>.
>