hrktorrent is a light console torrent client written in C++, using rasterbar's libtorrent. It features DHT, an IP Filter and reads a configuration file at $HOME/.hrktorrent, the archive comes with an example.
For IP-Filtering, make sure it is enabled and copy the ipfilter.dat file to ~/.hrktorrent/ipfilter.dat
Help is available by just running hrktorrent or 'man hrktorrent'
If you are using Gentoo or FreeBSD, installing is very easy, as both distributions have hrktorrent in their repository.
Gentoo:
# emerge hrktorrentFreeBSD:
# cd /usr/ports/net-p2p/hrktorrent/ && make install clean