function::sock_prot_str2num - Linux

Overview

The sock_prot_str2num utility converts a protocol name to its corresponding protocol number. It’s useful for working with network protocols and identifying the protocol of network packets.

Syntax

sock_prot_str2num [PROTOCOL_NAME | -n PROTOCOL_NUMBER]

Options/Flags

  • -n: Convert a protocol number to its corresponding protocol name.

Examples

To convert the protocol name "TCP" to its number:

$ sock_prot_str2num TCP
6

To convert the protocol number 17 to its corresponding name:

$ sock_prot_str2num -n 17
UDP

Common Issues

  • Invalid protocol name or number: Ensure that you provide a valid protocol name or number. Check the network protocol documentation for valid values.

Integration

sock_prot_str2num can be combined with other networking tools, such as tcpdump and netstat, to analyze network traffic and identify the protocols used by specific applications.

Related Commands

  • getprotobyname: Converts a protocol name to its protocol structure.
  • getprotobynumber: Converts a protocol number to its protocol structure.