> If I've got this wrong how does HTTRack handle ftp?
Well, httrack ca handle *basic* ftp. For crawling ftp 
sites, you'd better use a real ftp client, because httrack 
is absolutely not optimized for this use.

> What other protocols does/can HTTRack handle?
http, and https (over ipv4 and ipv6), "basic" ftp (over 
ipv4 and ipv6), and the pseudo-file:// protocol (to crawl 
local files)