a friend of mine has a problem with this guy on the net, that is using a program called narf, to close his connection for a few mins... Its a packet sender, which closes his connection.

He wants to know if its possible to get that application, or if its possible to get something to block him out for good ???

so could anyone help ?

hi,
check this out...

http://attrition.org/security/denial/w/mod-ath.dos.html

they give a little hint at the end of the doc.
can't test it i have dsl...
test it and post back the results... i belive that everyone is interested in knowing the results.