#3 'Serge' server

[Robert Diamond]

While testing the program I came across a server
designed to prevent poorly designed port scanners from
operating. It simply echo's "abcd...z123...90-+...<>"
and repeats this string with each charecture shifted
over one space. ( 'abc...' 'bc...a' 'c...ab' etc...).
This causes the program to slow down over time (because
of the larger scalar variable size, and greater CPU
usuage), while the port is opened. It also slows
communication to the server slowing the port scanner on
a network level. It would be possible to watch for the
same string repeating itself and closing the port once
the string returned by the server matches a previous
string.