VoIP Security Deployments

In This Section: Enterprise Deployment: Perimeter VoIP Gateway Enterprise Deployment: LAN Segmentation Service Provider Deployment

This section covers various deployments for enterprises, managed service providers, and telecom network providers.

Enterprise Deployment: Perimeter VoIP Gateway

In this enterprise environment, remote users and branch offices make VoIP calls to and from the protected enterprise network. The Security Gateway is used to set up IPsec encrypted VPNs.

For example, a VPN can be set up between the main office and branch offices. Security capabilities for VoIP include:

• Protecting servers and PBXs in the enterprise LAN against Denial of Service (DOS) attacks.
• Preventing unauthorized phone calls by means of Media Admission Control. Only defined servers can set up calls.