Juniper Networks announced enhancements to its NetScreen ScreenOS operating system to help enterprises and service providers deploy VoIP, peer-to-peer (P2P) and instant messaging (IM) applications. Juniper said the software enhanced help protect against hijacked calls as well as VoIP-specific Denial of Service attacks. These new capabilities include:
- Support for VoIP traffic across security zones - enabling secure and uninterrupted VoIP communications between users inside and outside the corporate firewall or across separate network security zones with distinct security policies;
- VoIP-specific DoS protection - protecting VoIP resources from network-level attacks; and
- Network Address Translation (NAT) support for both SIP and H.323 - facilitating distributed, end-to-end communication in enterprise deployments, while concealing network topologies.
- Additionally, Juniper enables traffic encryption via support for the VoIP protocol in its integrated IPSec VPN function, further protecting calls from eavesdropping and tampering. Inherent stateful High Availability enables secure and uninterrupted communications between users inside and outside the corporate firewall.
- Both SIP and H.323 have been implemented according to their respective standards and RFCs. SIP interoperability testing has been performed against more than 20 vendors' offerings.
