Block access to a website using router ?

Maybe, but there are plenty of easy ways around such filters. This is a war you will never win, and will constantly be fighting an uphill battle on.

So rather than fight it, you should consider embracing it so you can exert some influence. Think about it. When you were his age, if your father came in with a stack of Playboys and wanted to go through them with you, wouldn't you be a LITTLE creeped out?

I am a Father of 7 ranging from 12 to 28, I appreciate the reply, but the telling me how to be a Father is another story, I didn't ask how to be a Father. Lol. The analogy with the playboys didn't really make sense is trying to pertain to "consider embracing it so you can exert some influence".
Consider no matter what you do or say or teach, a decent, unfortunate amount are going to do things behind your back no matter what, so you nip it in the bud the best you can.
You know Fads and peers even having to fight teachers and law makers these days, are pretty hard to fight, no matter your teachings or relatioinship.

Yep, father of 3 myself. All really great kids but still, I would never assume to trust any child completely. It's tough with the internet and being a parent, I KNOW. What you can try is this...

http://www1.k9webprotection.com/

Also, I included a strict internet policy, they are NOT to delete history, or anything else internet related, if they do, I take the pc away. If I have to dig to view it, which I have in the past lol, then they are already in trouble but I want to SEE what they are doing. "Just a suggestion of course, it's much easier to SAY than to keep up with, life is busy."

A more advanced option is by editing the host file but not sure you want to do that.

WOT < will also block some sites and is one I use when surfing.

http://www.mywot.com/fr/download

It's an addon for the browser but works very well. I don't know if you need to register\sign up to protect WOT settings or not, "never tried" else they could be changed in the WOT settings from blocking a site.

almost forgot to mention, you should have access restrictions on your router as do I but good luck getting them to work. I have tried everything under the sun and still no luck. You can try by typing 192.168.1.1 in the address bar, type admin and password, and it should be listed under a tab. Maybe you will have better luck than I did.

Depending on the model of the router you can restrict certain sites to specific PCs on your home network. Easy.

Not so easy.

Be sure to password protect the router access configuration so said children cannot change the settings. And be prepared when they find out that pressing the reset button on the router takes it all away.

If, after several attempts by you to curtail their surfing activities, you find out that all can be circumvented, you then take the PC away. Or whatever more severe actions you may take.

Really, anything you add or change to prevent surfing CAN be cracked by a zealous teenager.

I don't think the Linksys line of routers give you an option to restrict
certain websites. That was one of the reasons I switched to a Netgear router long ago.
That restricts everything and everybody going through the router.
Of course there is the reset the router routine unless you have the router under lock and key.
The kids now are very ingenious when it comes to getting around things like restrictions.

mopscare42: I am not sure why you were under the impression that Linksys doesn't do this, but they do.

DADSGETNDOWN: http://www.technipages.com/block-web-sites-via-your-linksys-wrt54g-series-router.html

Check that link, it's likely the same layout you have.

Apparently on mine blocking is on a trial then subscription basis. It apparently disappears after the trial.