Common Protocols Multicast Addresses Ethernet Numbers Tech Essays Internet Course Solaris Information Misc. IDS Sniffers Vulnerability Scanners Port Scanners Network Monitoring Firewall Ping NetBIOS Password Packet Tools Promiscuous Detection Fingerprinting Phone Steganography HTML NT Misc. One of the more important networking concepts is the protocol .
Protocols usually exist in two forms.
First, they exist in a textual form for humans to understand. Second, they exist as programming code for computers to understand. Both forms should ultimately specify the precise interpretation of every bit of every message exchanged across a network. Protocols exist at every point where logical program flow crosses between hosts. In other words, we need protocols every time we want to do something on another computer.