On Wednesday 03 September 2003 5:43 am, Michael Kukat wrote:

> i have a massive problem with an ISDN dialup setup at a friend. The
> machine is set up for auto-dialing, and should have a idle timeout
> of 120 seconds. The problem ist... the interface _NEVER_ goes idle,
> as there are mountains of connection scans on port 135

man pppd

Look for "active-filter-in" and possibly "active-filter-out". These 
allow you to specify which types of packets should be ignored when 
deciding if the link is idle.

Cheers, Steve