My MacBook Pro will connect to WiFi but will not work in one location but will at others. I have the same issue with my IPhone 4S at the same location.

My MacBook Pro will connect to Wifi at one location (this is a secure location) but will not allow access to the internet. I will put in the password but will not display page. Other wifi capable devises do not have this issue but my Mac and my Iphone 4S will not work. I have tried restarting the router. All other wifi locations I have been to have not had this issue. Any suggestions? I am realtively new to Apple products (less than a year) so any advise is greatly appreciated.