Hello guys! I have prepared a site in Magento ..its all about online shopping ..in this site user can't enter without log in. but i am facing a hurdel now that... there are visits from one IP, 150.70.64.199 this visitor is able to access inside categories with out loggin in when ever this guy comes, he can visit the sales as a guest mode please help me out.. i want to know how can i prevent it? which type of problem is this ? and what are the possibilities by which this particular IP can break the code?