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+--- Thread: Why Use a VoIP Firewall with an SBC? (/showthread.php?tid=124587)
Why Use a VoIP Firewall with an SBC? - dinstarindia - 28-07-2025
A VoIP Firewall plays a crucial role in securing IP-based communication systems by monitoring and controlling traffic to protect against threats like SIP-based attacks, toll fraud, eavesdropping, and unauthorized access. Unlike traditional firewalls, a VoIP Firewall understands SIP and RTP traffic, enabling it to filter, inspect, and block malicious VoIP-specific traffic effectively.
In most modern deployments, a VoIP Firewall is integrated within or alongside a Session Border Controller (SBC). This combination strengthens network security by:
- Preventing SIP-based attacks: SBCs combined with VoIP Firewalls protect against DoS/DDoS attacks, call hijacking, and SIP fuzzing attempts.
- Securing media and signaling traffic: They provide encryption (TLS/SRTP) for secure communication.
- Managing traffic policies: SBCs ensure that only authorized endpoints and traffic types are allowed, reducing the attack surface.
- Enabling remote and multi-site connectivity: The firewall filters traffic while the SBC handles NAT traversal and interoperability.
For businesses using advanced IP PBX systems like uc200 pro, integrating a VoIP Firewall with an SBC ensures end-to-end communication security without compromising performance. This layered approach not only safeguards VoIP infrastructure but also maintains call quality, making it essential for enterprises, service providers, and SMEs looking to protect their unified communication networks.