Basically I want to know the TCP fields inside of a packet. I already know the IP fields like IP_SrcIP and IP_DstIP, but now i need to know the TCP ones. I know some ICMP ones, etc., but i need TCP Any references out there? THX

Try www.protocols.com.

Hope that helps.

Dire Wolf
www.digitalfiends.com

Here''s where you get the real stuff:
http://www.rfc-editor.org/rfc.html

RFC = "Request for Comments", basically how every internet protocol is described.

Under that page you''ll find a link to internet protocols:
http://www.rfc-editor.org/rfcxx00.html

Find IP, TCP, UDP, ARP (very important if you''re writing the controller for an ethernet card), SMTP, TELNET, FTP, anything you want.

Beware: these are the actual specs for all the protocols, not a "user-friendly explanation".

There''s a bunch of other RFC searches, just Google for "RFC". They should all refer to the same docs, though.