This version of the BSD talkd suppresses VT100 (flash) bombs.  The user
being bombed won't even see it.  Warning messages will be written to the
syslog telling who the bomb was directed at and the host address specified
in the talk packet.  Since this can be faked, it is labelled 'apparently
from'.  You can match the PID of the talkd with the PID of the entry made
by tcpd to get the real hostname.

To compile under Linux just type 'make'.  To install, copy the in.talkd that
is created over /usr/sbin/in.talkd (or whatever is normally invoked by your
inetd).
