Webshop only for members

Hi guys,

I want to build a webshop what is only viewable for clients with a login page.

– So if you go to the url you get a login screen
– after filling in the username (e-mail) and password you gain acces to the shop
– So you can not acces any page at the shop without a login code
– It can be one code for all customers of a custom code for every sepperate customer.

Does anybody know a good solution for this? Cant find a good solution, so any help with a good plugin for this would be fine.

Thanx again!