CAT5e Wall Jack doesn't work :( HELP!!!

[Roman]

Apologies if this questions has already been asked and answered.

I have in wall CAT5e wall jacks, non of them were working in first place. I went ahead to the master closet and opened up the patch box everything was disconnected. I wired them all to the punch down ports and now they are all working when i test it with ethernet tester. However, when i connected my cable modem's ethernet port to one of the wall jack via ethernet cable i am not getting internet access in any of the wall jacks throughout the home yet when i test all the ethernet ports with tester, it tests out fine. This is driving me crazy now a days. Any tips? help? 

Thanks

[DaveLembke]

Hopefully you have a network switch that the incoming internet connects to that, then patch panel and cables tying in a single internet connection to the switch which allows for multiple devices to share a connection. You cant just have it all wired back to the cat5 of the modem. A switch is needed to share internet with multiple jacks/rooms.

If all you want is a straight shot and no other rooms to have internet then you could use the patch box as a redirect from one room to another with all other connections dead.

[camerongray]

Might be worth sharing a photo of what you have in the "master closet" - For a network to work you would need to have a network switch here that links all the ports together.  If all incoming cables are connected together on some sort of panel then it's likely that the install you have is for analogue telephones and not computer networking, it's quite common to use CAT5 cables for this nowadays due to its wide availability.  In this case you'd need to replace what you have in the master closet with a patch panel and connect this into a network switch.