Very Computer

by **Doug Laidla** » Sat, 03 Feb 2007 14:06:55

I am unable to get ourtside services to see my computer. I have an ADSL
modem/router configured as a "bridge" feeding into a wireless+4xethernet
router, with one ethernet port going to my computer, and the wireless port
going to my wife's laptop. We have never had full networking, since her
intersts and mine don't overlap.

I have port forwarding for Ports 80 (Web server) 25 (Mail Server) P2P and
VOIP. According to a scan at "Shields Up!", all the first 1056 ports come
up as stealth. My servers are not visible. EchoLink (a Ham program using
VOIP) can receive a station list, but can't connect to the test server (the
necessary ports have been forwarded.)

Any suggestions please? I rather suspect that it is due to having the modem
in two stages.

Doug.
--
How wonderful it is that nobody need wait a single moment before starting to
improve the world.
- Anne Frank.

by **Doug Mitto** » Sat, 03 Feb 2007 23:48:08

>I am unable to get ourtside services to see my computer. I have an ADSL
>modem/router configured as a "bridge" feeding into a wireless+4xethernet
>router, with one ethernet port going to my computer, and the wireless port
>going to my wife's laptop. We have never had full networking, since her
>intersts and mine don't overlap.

>I have port forwarding for Ports 80 (Web server) 25 (Mail Server) P2P and
>VOIP. According to a scan at "Shields Up!", all the first 1056 ports come
>up as stealth. My servers are not visible. EchoLink (a Ham program using
>VOIP) can receive a station list, but can't connect to the test server (the
>necessary ports have been forwarded.)

>Any suggestions please? I rather suspect that it is due to having the modem
>in two stages.

>Doug.

There is a work around for Echolink ... a public proxy:
http://www.echolink.org/proxy.htm

You didn't provide a lot of detail about your configuration BUT
consider:

- You set up port forwarding in your router but is the firewall on
your linux machine blocking the traffic?

- Does your Linux machine get a static IP address from the router, so
that it is always the correct destination of the router forwarding
rules?

- In your router forwarding rules did you forward TCP as well as UDP
traffic?

Good luck!
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by **Doug Laidla** » Sun, 04 Feb 2007 01:28:03

> On Fri, 02 Feb 2007 16:06:55 +1100, Doug Laidlaw rearranged some electrons
> to form:

>> I am unable to get ourtside services to see my computer. I have an ADSL
>> modem/router configured as a "bridge" feeding into a wireless+4xethernet
>> router, with one ethernet port going to my computer, and the wireless
>> port
>> going to my wife's laptop. We have never had full networking, since her
>> intersts and mine don't overlap.

>> I have port forwarding for Ports 80 (Web server) 25 (Mail Server) P2P and
>> VOIP. According to a scan at "Shields Up!", all the first 1056 ports
>> come
>> up as stealth. My servers are not visible. EchoLink (a Ham program
>> using VOIP) can receive a station list, but can't connect to the test
>> server (the necessary ports have been forwarded.)

>> Any suggestions please? I rather suspect that it is due to having the
>> modem in two stages.

>> Doug.

> Your ISP may be blocking them.

Thanks. That may be so. They used to work on this setup but only for a
while.

Doug.
--
Imagine all the people living for today.
- John Lennon.

by **Dan** » Tue, 06 Feb 2007 13:25:20

> Any suggestions please? I rather suspect that it is due to having the modem
> in two stages.

Can you see the web server from your wife's computer? That's a good
starting point. If you can't see it from your local network then you
won't be able to see it from outside. What about from the host computer?
Make sure that things are actually running (netstat -tl). You also need
to make sure that you don't have any firewall settings on the host
blocking ports. Wireshark and tcpdump are good networking diagnostic
tool, also nmap.

Dan

Very Computer

Port Forwarding -All ports shown as "Stealth"

Port Forwarding -All ports shown as "Stealth"

Port Forwarding -All ports shown as "Stealth"

Port Forwarding -All ports shown as "Stealth"

Port Forwarding -All ports shown as "Stealth"