RealNetworks cross-platform multimedia player. Supports RTSP/RTP with H.261, u-Law, a-law, MP3, DVI. [Client]

Responsible registry for europe, north africa and russian area.

Search engine for files on ftp servers worldwide, thematic search for music, images, video, hardware drivers.

Many free web-based DNS tools all in one location. Includes standard DNS lookups, WHOIS/IPWHOIS, and even obscure IPv6, IP-to-country and spam database lookups. Fast and thorough.

Apple`s multi-platform multimedia software architecture. Supports RTSP/RTP with H.261, H.263, MPEG 1 Video, Layer 1 and 2 Audio, DVI, mu-Law, a-Law and others. [Client, includes source]

Open source SSH client with remote file copying support. [Win32 (Intel and Alpha)]

Immediately displays your current IP address and browser type and version.

A collection of information on the protocol. Contains news, reports and an IP telephony job noticeboard.

Features an overview of various networking and mobile communications protocols, white papers, and links of interest.

ARIN is the regional registry of IP and ASN numbers for North America, South America, the Caribbean, and sub-Saharan Africa.

Free service automatically determines one`s address on the Internet.

Provides a free DNS report on your domain. Includes over 20 different tests, looking for both minor and major problems.

This is the overview materials related to the W3C HTTP activity, one of the W3C Architecture domain activities. HTTP has been in use by the World Wide Web since 1990 and its use has increased steadily over the years, mainly because it has proven useful as

Nearly 800 helpful files including FAQs, primers, technical guides, clients and scripts, and server lists and maps.

SecureCRT is an SSH client that supports X-session forwarding and secure file transfer. Evaluation version available for free.

IANA controls numbers for protocols, the Country Code Top Level Domains and maintains the IP Address allotments.

Web Site for the Books of William Stallings

Description of protocols, file formats, glossary of terms, RFCs.

A technical introduction to IP addressing and address subnetting in an easy-to-understand tutorial format.

the National Laboratory for Applied Network Research

Responsible registry for south america.