how to bypass firewalls

[migalo digalo <l.epsilon () gmail com>]

hi all,

i am in lan and i can connect to irc (port 6666-6667)but i can't
download xdcc streams ,i am wondering if it's possible to bypass a
firewall and download from irc channels (xdcc)??

an othoder question :if i connect trought ssl to irc server will the
dcc connection pass trught ssl too?

thank you.