Protocols Links to pages by protocol (NNTP, HTTP, etc.)

Person to Person Communications user to user messages and communication (chat, talk, wall, bbs)

Electronic Mail - broad overview of electronic mail software, protocols, et al.

File Transfer and Distribution Protocols and Methods of transfering files and directories, distributing and installing software. (file collections and archives, FTP, cvsup, NFS, et al.)

Image Transmission Image transmission, facsimile, fax, et al.

Local Process Communication Communication between processes running on the same system. Synchronization. File locking. Signals. FIFOs, pipes, et al

Host, service name, and address operations including DNS, whois.

Communication Debugging Status, tracing, and debugging communications and protocols.

Identity Authentication (including passwords, radius, identd, crypto methods, et al.)

Terminal I/O - TTY (character based display and keyboard) and related routines.

Serial I/O Serial port use.

See also User Interface - Gateway topic to presentation (like printing and graphics) and user interface routines. Textual User Interfaces Curses et al.

Remote Process Communication Methods of communicating to remote processes. Remote Procedure Calls, sockets, data format translation, et al

Communication Implementation (low level implementation, multicast, ppp, slip, wrappers,firewalls, et al)