What is my IP?

[simplejack]

Hi,
When I use Internet and connect to a website for example I connect through my router and then the router connects to the internet. I have set up a web server in Ubuntu 8.10 Intrepid, and I want my friend to connect to it. But when I went to a website like whatismyip.com it displayed IP of my router.

So my question is, how can people connect to my web server? or how can I find out my COMPUTER's IP?

Thank You!

[thedarkwolf25]

go to run>then type cmd and then ipconfig

[simplejack]

Originally Posted by thedarkwolf25

go to run>then type cmd and then ipconfig

lol, thanks for your answer, but I already know that, and tryed it, it just gave me my LAN IP, 192.168.1.*

Any more suggestions?

[johnwill]

Take a look at DynDNS, it solves the issue of mapping a fixed URL to a dynamic IP address.

[simplejack]

Originally Posted by johnwill

Take a look at DynDNS, it solves the issue of mapping a fixed URL to a dynamic IP address.

Thanks for the link, I have registered but I do not know how to get Dynamic IP address from DynDNS.

What do you have to do in order to get my domain like simplejack.DynDNS.com or something like that so people can access my server running on my computer ?

[johnwill]

Follow their pretty clear How-To: http://www.dyndns.com/services/dns/dyndns/howto.html

[bilbus]

the ip of your router is the ip he should be connecting to. You need to foward port 80 back to your webserver.

[Alkaril]

Hi,

To know your public WAN IP (the one your Cable/ADSL/Sat modem allocated from your ISP), use this link http://whatismyipaddress.com , or Google for "what is my ip address".

Then you should make "port forwarding" at your modem/router as explained in previous answer for Dynamic DNS.

For example, if you use standard port 80 and your HTTP server internal (LAN) IP is 192.168.0.3, you should forward external traffic, coming to port 80, to internal HTTP server IP=192.168.0.3.

Read your modem/router documentation about how to do this.

By the way, ISP will make your IP static for additional charge.

Wish you success.

[simplejack]

Originally Posted by Alkaril

Hi,

To know your public WAN IP (the one your Cable/ADSL/Sat modem allocated from your ISP), use this link http://whatismyipaddress.com , or Google for "what is my ip address".

Then you should make "port forwarding" at your modem/router as explained in previous answer for Dynamic DNS.

For example, if you use standard port 80 and your HTTP server internal (LAN) IP is 192.168.0.3, you should forward external traffic, coming to port 80, to internal HTTP server IP=192.168.0.3.

Read your modem/router documentation about how to do this.

By the way, ISP will make your IP static for additional charge.

Wish you success.

Thank you, now it is very clear.

I have a Netcomm modem router NB5PLUS4W and on this I have learnt how to port forward to my PC. I have port forwarded custom port 80 to my webserver on ubuntu but no one can access it via a web browser. But they can ping it.

Do you have any idea why this happening?

When I type in localhost or 127.0.0.1 into my browser I can see my index.htm file but others get

[code=GATEWAY_TIMEOUT] A gateway timeout occurred. The server is unreachable. Retry the request.

Thanks

Please contact the administrator.

[techservices24]

Please try the following troubleshooting steps :--
1. Please go the "Tools" tab then ''Options" tab in the Internet Explorer.
2. Clear the History, Temporary internet files and cookies of your browser.
3. Restart the internet explorer.

Even if the issue persists then please try to resolve this issue by using the Firefrox.

[bilbus]

did you foward your port?

Goto GRC "shields up" to see if port 80 is open on your PC. some ISPs block port 80

[Jason09]

For users to connect, they need to use your IP listed at www.portforward.com.

[Alkaril]

Hi,
First check if your HTTP server have Static LAN IP and this IP and port 80 are in forward list of Router.

Check if your HTTP server listening at his Local LAN IP, for example http://192.168.0.3.

Enter from server console "netstat -l". Output will be like this:

Proto Rcv-Q Snd-Q Local Address Foreign Address State

tcp xxx xxx localhost:80 *:* Listen
tcp xxx xxx *;80 *:* Listen

localhost:80 equivalent to 127.0.0.1:80 and it works for you.

*;80 mean listening at all addresses of connected LAN interfaces.

If this string is presented - you may connect from any local LAN computer.
If not - you need to tune up your HTTP server.

Then I recommend to conduct next tests by enter into browser window next IPs (http://xxx.xxx.xxx.xxx):
1. Local loop ip (127.0.0.1) - it works as you informed.
2. Local LAN IP of your server, for example http://192.168.0.3.
OK if it works.
If not - check firewall (temporary disable) etc.

Connect to your router by opening separate explorer session and look for log file.

Now ask somebody to connect to your Public IP (http://<your Public IP> and you should see messages in a log window similar to next:

Thu, 2009-04-16 16:44:29 - TCP Packet - Source:<IP of PC connecting to your HTTP Server from outside>,3114 Destination:<your router Public IP>,80 - [Any(ALL) rule match]

3144 is a port number and my differ from example.

There may be messages about re-route to your HTTP server.

* I am not familiar with a router you use, so you will find in manuals, at Internet or forums how to configure it for port forwarding and how to check logs.

[Alkaril]

One more tests, and I recommend to do it first - define your HTTP server as DMZ. There is an explanation in Modem/Router User Manual. If it start to work - go back to Port Forwarding for troubleshooting.

[simplejack]

I'm sorry for not replying for a long time.

Thanks for all your help, and I'm pleased to say that I have resolved the issue.

I found out that my ISP blocked connections on port 80, so I port forwarded my router to another port, 1337 xD

And yea, it's all good now, once again thank you for all you help, especially Alkaril.

[Jason09]

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