Can one bypass vpn for a specify browser ?
You're probably correct, but at this point it's impossible to say. We don't even know what sort of VPN he's using. It might be on a router, on a PC or a web-based service. If it's not on the router then it might indeed be possible.
Welcome To SNBForums
SNBForums is a community for anyone who wants to learn about or discuss the latest in wireless routers, network storage and the ins and outs of building and maintaining a small network.
If you'd like to post a question, simply register and have at it!
While you're at it, please check out SmallNetBuilder for product reviews and our famous Router Charts, Ranker and plenty more!