> 
> > According to my modem lights and netstat -picmp, someone out there in
> > IP land seems to be constantly pinging my system (not a flood ping,
> > thank goodness).  Is there an existing program that can be used to
> > figure out the source of these packets?
> 
> Why not just sic tcpdump on the ppp/slip interface?  (Unlike what its
> name appears to suggest, tcpdump is actually capable of dumping more
> than tcp packets.  I don't actually know that it will work with a slip
> or ppp interface, but if it doesn't I would say it's a major bug.)

Forgive a question from the clueless, but when I try tcpdump I get:

law:~>tcpdump -i ppp0 icmp
tcpdump: /dev/bpf0: No such file or directory

What do I need to do?

Brad