[gb-users] IP tunnel - a simple question

[Tibor Borzak]

Hi,
 
If I have setted-up a simple tunnel (external IP : port -> Internal IP :
port);using which filter (Remote Access, IP pass through ?) can be 
controlled the access to this tunnel from outside (external network -
for ex. limiting the interent IP addresses who can access the external
IP : port).
 
Thanx for the hint. :)
 
Regards,
 
Tibor B.
a "simple" sysadmin :)