DNS filtering is also the solution that is the easiest to go around... :-) Either chose a foreign DNS, or chose to fully resolve the names by yourself...

But I'm sure this is the easiest and cheapest way to proceed.

2009/2/17 Xaver Aerni <xaerni@pop.ch>
When the ISP block it only by DNS Filtering???
I think to block 1 side is a DNS Filtering the easyest and fastest way.
Greetings
Xaver