SIP (Session Initiation Protocol)
SIP is a text-based signaling protocol used for initiating, maintaining, and terminating real-time sessions that include voice, video, and messaging applications. It is widely used in Voice over IP (VoIP), instant messaging, and multimedia distribution.
SIP Overview
Key characteristics of the SIP protocol
- Text-based protocol, making it human-readable and easier to debug
- Used primarily in VoIP, IMS, and WebRTC applications
- Flexible and extensible, allowing for easy integration with other protocols
- Supports peer-to-peer communication as well as client-server models
- Provides mechanisms for presence information and instant messaging
- Operates independently of the underlying transport layer protocol
- Supports name mapping and redirection services
Security Advisory
SIP-based systems are frequent targets for attacks due to their widespread use. Ensure your SIP infrastructure is properly secured, regularly updated, and monitored for suspicious activities. Implement end-to-end encryption for both signaling and media whenever possible, and stay informed about the latest SIP security best practices and emerging threats.