[expert] secure network connection over the Internet

[Harald Wolf]

Hi,

i plan to install a secure IP-Connection to my companys local network
over the Internet.
just like:
company<------->privider<-----internet----->myProvider<----->my box
and i want to use WinNT/95/2000 or linux.

is there a way or produkt to realize this ??  if possible with the
publik key solution ??
what do i need ??

pleas do not recommend MS-PPTP !!!