installing ipfilter

[Robert Storey]

I wanted to do some experimenting with ipfilter, and strangely, I can't figure
out how to install it.

It doesn't seem to be installed. If I do "which ipfilter" or "man ipfilter",
there's no indication of its existence. I tried "locate ipfilter", I do find
this:

  /usr/share/examples/ipfilter

  /usr/src/contrib/ipfilter

Neither of these appear to be what I need. I've looked in /usr/ports, and can't
find it there either.

I'm using 5.2-RELEASE.

best regards,
Robert