The harbour.pl script builds 1941 and below suffer from a remote denial of service vulnerability.
6025ad2f20319b92507cebe17960e3c31744c65c9fc8f412d122a8c4b6378d43
Versions of harbour.pl (up to and including build 1941) are vulnerable to a
remote Denial of Service attack.
Spamming "zeroes" (null packets) to port 1207 results in a large portion of
system resources being tied up.
Please update to build 1945 as soon as possible.