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Open ports on a router

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Is there a piece of software that can tell me if a TCP/UDP port I have opened on my ADSL router at home is actually open and also log any traffic that is using this port ?

Thanks Ivan

Hi Ivan.

Donno what software you can have that is 3rd party but i do know (depending the brand of your router) that a router should have its own software to allow you to configure it.

EG: for Linksys router u need to access its IP address say 192.168.1.1 and it will ask you username and password (it should say it in the handbook). There is a section where it shows a table with the open and close ur router's tcp/udp ports. As my mates wanted to use Bit torrent (BT) and he was getting crappy speeds & connections. Once open the ports that BT uses, getting quick dload speeds

Like i said it all depends what brand your router is and it should mention it in the router's handbook.

Hope this helps.

  • Author

Yes there is a GUI setup on the router which has all been configured, but I get the feeling that what the GUI says if different from what it actually does...

My router logs attempts to get in in its own log (D-Link). Alternatively install a firewall product on a PC inside the router and use that to log also.

You can test ports with telnet. Use "telnet

" so you could run your own tests from work or somewhere. Bear in mind that the ISP may have closed some ports on their own network before it ever gets to your router, though.

Who is your ISP?

Alternatively if you have access to a linux box, use something like nmap to scan the ports.

  • Author
Who is your ISP?

Plusnet :cool:

Just checked, doesn't look like they block any ports so you should be ok :)

Try this site.

http://www.auditmypc.com/

It's not as melodramatic as :thumbdwn: grc.com :thumbdwn: .

Cheers

I just ignore the dramatic stuff and use the scanning tools on GRCs' site. He makes some claims which are rubbish, and some which are genuinely true. Problem is a lot of people either loathe the guy or read his stuff as gospel. I'm inbetween :D :D

He's an idiot over at GRC, but his ports can works well.

It's all i use it for.

Is there a piece of software that can tell me if a TCP/UDP port I have opened on my ADSL router at home is actually open and also log any traffic that is using this port ?

Thanks Ivan

got your webcam then?

  • Author

Yer got it but not been able to see it outside my firewall despite opening the port for it and setting up the forwarding to the camera's IP and port number :(

have you checked that the ip address on the camera hasn't changed?

Also have you checked the the default port for the linksys config page http://192.168.1.1/ isn't using port 80 (default webpage port)

  • Author
have you checked that the ip address on the camera hasn't changed?

Also have you checked the the default port for the linksys config page http://192.168.1.1/ isn't using port 80 (default webpage port)

Well the Camera's IP is on the LCD display on the camera so I know that's correct, the default port for the camera is port 1024 IIRC, so I've setup a rule to forward all request that come in to port 1024 to go to the IP on the camera. The only other thing I can do is put the camera in the DMZ on my firewall to make 100% sure it works.

Anyway after running this port check software on a few of these websites it tells me that port 1024 can not be seen so I suspect there is any issue with the firewall rule. The unit I am running is a Netgear DG824M and I have refered back to the manual and it appears I have set it up correctly.

As a guess I would say you also need port 80 forwarding to the camera...

Whats the pics like from the camera?

  • Author
As a guess I would say you also need port 80 forwarding to the camera...

Whats the pics like from the camera?

I think I did try port 80 as well to the same IP.

The pictures are very good when viewing them on a lan, I have no idea across the net though.

Anyway I think there is an issue with the camera as the other day the wireless packed up so I am getting a replacment hopefully tomorrow.

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