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Re: weird WRT54G stopped forwarding port 80 and 443

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On Tuesday 31 May 2011 02:21 in comp.os.linux.networking, somebody
identifying as Philip wrote...

> I have a WRT54G. Everythig was working fine until today.
> 
> I had ports 80 (http), 443 (https) and ports 20-22 (ftp and ssh)
> forwarded to a internal static IP (192.168.1.140) server. I also had
> port 8082 forawarded to internet camera with the static IP
> 192.168.1.151.
> 
> Today I bought a new internet camera to replace one that failed. I set
> it up as another static IP 192.168.1.150 on port 8081 and set the
> WRT54G to forward to it.

So, judging by what you are saying here, I take it that you have *two*
cameras, and that your layout is something like...

            INTERNET
                |
             router
                |_ port   20______
                |_ port   22______|
                |_ port   80___server 192.168.1.140
                |_ port  443______|
                |
                |_ port 8081__ camera 192.168.1.150
                |_ port 8082__ camera 192.168.1.151

Would that be correct, or are there any other machines still on your LAN
(and if so, how many)?

> Now for some inexplicable reason, everything works except for ports 80
> and 443. In other words ssh, ftp and internet cams are accessible from
> outside. However, when I try to access the the webserver, I can see
> that the forwarding is not working. The browser responds asking for a
> WRT54G login/password. If I try to access the webserver directly at
> 192.168.1.140 it works fine. So clearly the WRT54G is picking on ports
> 80 for some reason. It is not my ISP blocking the port as I can see
> the login/password prompt indicating it is my WRT54G domain.

If you have more machines or appliances on your LAN than what you've
mentioned here, then chances are that you'll be using a switch to
uplink to your router - I myself have a WRT54GL [*] and it has only 4
ethernet ports for LAN.  As such, it is quite possible that you've
created a conflict by swapping ethernet cables around.  

You will need to check on IP address/MAC address mismatches.  If you're
using an external switch to connect to your router, try resetting the
switch by unplugging it from the power outlet for a few seconds and
then plugging it in again.  Also make sure that everything is still set
up in the router's configuration utility as it is supposed to be.  You
may also need to reset the router, depending on what the actual problem
is.

Sorry - best educated guess I can make at this point.  Only _you_ know
what you've done. ;-)


[*] I believe your router is an earlier model, so I'm not familiar with
    its firmware.  (Mine runs Linux "out of the box".)

-- 
*Aragorn*
(registered GNU/Linux user #223157)

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Thread

weird WRT54G stopped forwarding port 80 and 443 Philip <none@nospam.net> - 2011-05-30 17:21 -0700
  Re: weird WRT54G stopped forwarding port 80 and 443 "David W. Hodgins" <dwhodgins@nomail.afraid.org> - 2011-05-30 20:44 -0400
    Re: weird WRT54G stopped forwarding port 80 and 443 Philip <none@nospam.net> - 2011-05-30 22:10 -0700
  Re: weird WRT54G stopped forwarding port 80 and 443 Aragorn <aragorn@chatfactory.invalid> - 2011-05-31 07:47 +0200
    Re: weird WRT54G stopped forwarding port 80 and 443 Philip <none@nospam.net> - 2011-05-31 08:43 -0700
      Re: weird WRT54G stopped forwarding port 80 and 443 Aragorn <aragorn@chatfactory.invalid> - 2011-06-01 00:33 +0200
        Re: weird WRT54G stopped forwarding port 80 and 443 Philip <none@nospam.net> - 2011-06-01 21:21 -0700
          Re: weird WRT54G stopped forwarding port 80 and 443 Aragorn <aragorn@chatfactory.invalid> - 2011-06-02 07:17 +0200

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