I forgot the port number

Hi,

I need to enter a port number (somwhere between 8000 and 8999) to enter the config menu to my modem/router
I did the setup by myself and and forgot the number is there a free tool to check which ports are active or available?

just tried "active ports" but this tool is telling me only what ports are active at the moment. I need to check which local port will answer.

Hmm, you know me, I am a php guy.

You can try to create a php script for this job with the exec command :)

too much work ;)

That's true, but it would be fun if you had some free time :)

I think what you are looking for is a port scanner utillity, but I can't remember a good one.

maybe this one: http://www.download.com/3001-2085_4-10558610.html

yeah, that seems to do the job

yeah but it doesn't work looks like I have to reset the modem, this is really shots (costs hours)

looks like that I was to save with everything...and can't access the modem anymore...

There's some free portscan apps listed here
With a portscan app you can enter an IP address and it will try every port number for you and end up with a report on which ports are open. Almost all ISP's have a policy against portscanning, but on your own LAN its no problem...

I tried this port scan but it looks like that everthing is closed :-(

Are you sure that everything is not closed?

I scanned all ports (arround 65000) and nothing is open :(

Maybe you are in different subnets (I mean the subnet that the modem is using and the subnet of your pc)

that's a good one, the pc in in the subnet of a another router, how to do that checking in a different subnet, maybe I should connect the pc directly with the other modem/router
thanks I will let you know about, later...

The router should take care of the routing between the 2 subnets. If you can ping the modem you should be able to portscan it as well (as long as there is no firewall inbetween to prefent this) still the best thing to do is just a direct connection from your pc to the modem, disable your firewall and scan away!

Thanks I will try this

With an app you can scan an IP address and he will attempt to resolve port number for you and again with a report on the open ports. Almost all ISPs have a policy against portscanning, but on your own local network not be a problem ... ???