Dynamic Host Configuration (dhc) Workgroup: The IETF workgroup responsible for the design of DHCP. Here you can find the charter of the group, its plans, and a list of Internet drafts and RFCs

Internet Relay Chat (IRC) Help: Nearly 800 helpful files including FAQs, primers, technical guides, clients and scripts, and server lists and maps

OpenSSH: An open-source SSH client and server

RFC 0959: File Transfer Protocol. J. Postel, J.K. Reynolds. October 1985

SAMBA Web Pages: The official SAMBA site. Provides links to mirrors

Session Initiation Protocol (SIP): FAQs, background materials and lists of current work in this field