OT: printing over the internet

[Andrew L. Gould]

Searching the internet, I found that lpd uses port 515 and Internet 
Printing uses port 631.

Do I have to install anything special to enable Internet Printing?  I 
currently use apsfilter to configure my Okidata B4350 (with postscript 
upgrade).

Is port 515 for local printing only?  If I have my router forward port 
515 and add a '+' to /etc/hosts.lpd, should print serving work over the 
internet without the Internet Printing protocol?

Thanks,

Andrew Gould