Exchange Server, Accessing mail from the internet

[Didos]

Hi,

How can I read mail from exchange server outside my LAN?

Exchange server has a feature that allows me to read mail from internet explorer, which works well from inside our LAN. How do I read it from home?

Idea: Should I assign new user rights/groups to my account (if so, which one ) or should I create a VPN (virtual private network)?

Thnx for any help!