i was recently faced with a problem that wasn't allowing me to forward ports on my modem. i later found out that my modem is incapable of doing so. in order to get around this i put a hub between my machine and the modem. now the problem is that i have owned the hub for so long that any documents/manuals that i had for it are long gone.

what i need to know is how to forward ports through my hub. i have a 3com home connect 3C19261 hub between my modem (a "motorola SB5120) and computer. can anyone help?Welcome to the forum *

You should be able to get documentation here* good luck

http://www.3com.com/products/en_US/detail.jsp?tab=support&pathtype=support&sku=3C19261Uhh you can't forward ports on a hub, only a router can do that.

But let me explain. There are basically two kinds of modems. The ONE kind got a built in router that allows you to share an internet connection between multiple computers. The other kind just gives you a direct internet connection for one computer.
You only need to forward ports on the kind of modem with built in routers, I wont go in to details of why this is but it is basically because of how routers work. For the other kind you've got a direct connection to the internet and therefore no need to forward ports.

I've checked your modem ONLINE and it is definitely the kind without a router. So you can't and don't need to forward ports.

But if you describe what you're having problems doing I might be able to help you.i have certain sharing programs that say i need to map ports and others saying i need to configure my router settings. basically i just need to map my ports it is saying. but i am using multiple programs that are telling me this. i had already come to the conclusion that my modem is incapable of doing this so i thought that putting my hub between my modem and the machine WOULD allow me to do this.....i guess not.

but there is one program in particular that i do need to map ports for and that is a program i have called "DC++". perhaps you are familiar?
anyways i had configured my router setting for this program weeks ago on a different internet connection else where that was, indeed, using a router. i remember that i need to enable tcp and udp connections. if could figure out how to do this with what i have then perhaps i can get it to work. any ideas?It sounds like a firewall is blocking the ports. What version of windows do you have on the computer? Are you aware of any firewall software installed on the machine?i have created rules for these programs on all of my firewalls. i have xp home, i created a rule on the default firewall that comes with it, and i have created a rule on my norton.It's not a good idea to have two firewalls running. They might be conflicting. So if you have a firewall from Norton you can SAFELY disable the windows firewall.

After you've done that lets try and test if there's an open port.
Open the program that's causing problems.
Go to this page and press the proceed button.
Now fill in the port number the program uses in the text field and press 'Use Specified Custom Port Probe'.
The site will then try and SCAN your port, testing if there's an open connection.
If it fail to find an open port, could you try to disable your firewall and then do a second test.
Remember to enable the firewall after. i disabled my windows firewall for good now, and when i disabled norton firewall the port was still closed.Hmm that's strange...
Try changing the port in the program and see if that makes a difference.