Warcraft 3 often does not seem to recognise computers behind routers even if the named port is forwarded (default 6116). Try enabling the router's UPnP, but re-enable the firewall and set it to ask for authorisation on connections. Do not connect a computer to the internet without a firewall enabled.
Settings --> WiFi ---> Linksys (you should see it if your Linksys router is working properly
A broadband router combines the features of a traditional network switch, a firewall, and a DHCP server. A good brand is Cisco, Belkin, Netgear or Linksys.
You have to access your firewall ports, and block the port that communicates to battle.net.
It depends on the router model, Please find the below link which explains linksys router setup in general.
The Linksys is a wired router manufactured by Linksys. For driver support or other information about the router it is best to look at the Linksys website.
The router I use is a Verizon router. Its ok. Netgear is ok too but it has a built in firewall that I do not like. I guess my favorite is anything made by Linksys. They are high quality and easy to use
Linksys E2000 Advanced Wireless-N Router - CNET Reviews is one place where you can find a comparison of a Belkin router with a Linksys E2000 router and you can make a best decision what to choose.
router
What ever password the owner of the linksys router put on it.
At the bottom of the linksys router
One can download driver updates for a Linksys wireless router on the Linksys company website under the "Update" tab. Once on the "Update" page, enter wireless router number and connect it to Linksys to update it.
The Linksys router model nuber is WRT54G version 8