I have been busy installing and setting up my Buffalo WHR-G300NV2 router. When I was finished I went to the GRC site to check my PC for security. I found that port 113 is reported as closed rather than stealthed. I Googled the problem first and found that it was neccessary to add a new rule in port forwarding. I had a look but the options screen in my router is different to the one I googled. Could someone here advise me on how best to resolve this?.