Randoming ports and firewall rules

[Robert Moskowitz]

So it is past time for me to only use port 53 and support port 
randomization.  But I do run iptables (and ip6tables) and the server 
sits behind a Juniper SSG firewall.

Where are there instructions for setting up iptables for port randomization

and for general firewall rules (I doubt I will find specific for my 
Juniper).

thank you.

More questions to come as I peel this onion!  I am rather behind the times!