I dont know a great deal about this subject. Although recently I purchased a book that deals with the subject briefly, so...
here is a list of port numbers I found, it aint complete but its friendly on the eye :-)
http://www.webopedia.com/quick_ref/portnumbers.asp
if you look at port 194 (Internet Relay Chat) I'd probably try this. According to this book Ive got: all ports below 1024 are 'privilaged ports' these are reserved for well known servies. But if 'person x' firewall is set to block port '194' their still gonna be doomed.
the difference between tcp and udp:
tcp: a connection based protocol with full handshaking, error detection and correction. To provide a reliable delivery service.
udp: described as a 'unreliable connectionless protocol'. It has no handshaking nor does it have error detection and correction.
Hope this info helps!
here is a list of port numbers I found, it aint complete but its friendly on the eye :-)
http://www.webopedia.com/quick_ref/portnumbers.asp
if you look at port 194 (Internet Relay Chat) I'd probably try this. According to this book Ive got: all ports below 1024 are 'privilaged ports' these are reserved for well known servies. But if 'person x' firewall is set to block port '194' their still gonna be doomed.
the difference between tcp and udp:
tcp: a connection based protocol with full handshaking, error detection and correction. To provide a reliable delivery service.
udp: described as a 'unreliable connectionless protocol'. It has no handshaking nor does it have error detection and correction.
Hope this info helps!