isr.co.ro : glossary Internet Protocol (IP) A portion of the TCP/IP suite (group of standards; TCP stands for Transmission Control Protocol) used for the Internet and similar internal networks that specifies how the information is addressed, sent, and received between systems. If you're not involved with network design or repair, you won't have to worry about any IP details other than "IP address" values you'll have to enter into your software for accessing such network resources as Domain Name Service (DNS).