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I have a LINKSYS WRT54G2 router in my home network. Can i set it up in a way that would allow me to specify a pc that should only send and receive internet traffic, and be blocked off completely from the rest of my network?

The reason is that i have a laptop that has been prone to viruses over the last couple of months, and i would like to at least have internet access (over wi-fi) while i troubleshoot the issues, but i want avoid any risks to the other devices on my network.

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Which firmware are you using on the linksys? Asking because it theory you should be able to create multiple subnets and place your isolation PC in a separate subnet without routes to to the other local subnet. But the big question is if the default firmware allows this. (And if not if DD-WRT and friends are an option). – Hennes Feb 11 at 20:29
up vote 2 down vote accepted

I actually had exactly the same problem recently. I was unable to find a way to do this. However... it just so happened my router died (after a good 10+ years!). I replaced it with a Netgear, and the Netgear actually has what they call a "guest network", which is a whole separate WiFi SSID that it broadcasts, and is isolated from the primary (wired and wireless) network. Comes in quite in handy, that!

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Netgear has lot of router models. You should mention which one is yours. @eidy – Sathya Dec 11 '10 at 15:30
    
I was hoping to not have to buy a new router, as i'm pretty happy with my current one. – David A. Dec 11 '10 at 23:45
    
It's a WNDR3400. Sorry 'bout that. @David, I understand not wanting to buy new... I only did cuz my old Linksys died. But I was still putting it out there because if it comes down to it, this model seems to work well for that use. My old linksys was a WRT54G. – eidylon Dec 11 '10 at 23:57

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