isr.co.ro : glossary Intranet A network inside an organization, particularly one based on the same TCP/IP (Transmission Control Protocol/Internet Protocol) standards as the worldwide Internet, and therefore one that allows you to use standard Internet "clients," "servers," and utility programs. Many large companies and organizations are rapidly changing over many of their internal networks to this style of communication. In fact, Netscape Corp. makes most of its income from selling its tools for intranet use rather than for the more visible applications on the Internet.