Unable to connect to wireless Internet...help!

I have just got back from Christmas holidays to find that my mac won't connect to the internet through the wireless hub or bt open zone. I have reset everything I can think of, restarted the router etc, etc, but with no success. Can anyone help? It's so frustrating as it was fine before I went away?

Hello j2534a, welcome to Lenovo forums!
Please ask your admin. I had the same problems. The firewall is the main problem me thinks.
But that´s an issue for your admin.
Follow @LenovoForums on Twitter! Try the forum search, before first posting: Forum Search Option
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