[9.2.3] Resticting ports

[Jonathan de Boyne Pollard]

HS> I tried to restrict bind to port 53 [...]

Why?  Because you are incapable of knocking the proper shape of hole in 
your firewall?

<URL:http://homepages.tesco.net./~J.deBoynePollard/FGA/dns-shaped-firewall-holes.html>