killing port forwarding

[Leif Ryge]

I've got my linux box doing IP Masquarding for my home lan, and quite
often I'll ssh in from work and find things running painfully slow because
one of my roommates left gnutella open on their windows box and there's 90
some entries in the netstat -M listing as a result. Is there an easy way
to nuke all those entries and get some of my (very limited) bandwidth
back? When I'm at home this isn't an issue since I can just walk over to
their pc and quit the gnutella client, but right now at work I can't
exactly do that.