Firewalls and Security
Acme Packet - Net-Net Session Director (SIP, H.323 & MGCP)
MediaProxy - distributed far-end NAT traversal
MediaProxy is a far-end NAT traversal solution for SIP Express Router.
MediaProxy employs a revolutionary concept that allows selection of the NAT traversal location by using DNS SRV records. Visit AG Projects' SIP Showcase >>>
SIPassure SIP Firewall
BorderWare’s SIPassure SIP Firewall is the industry’s first comprehensive SIP security device. It is a secure edge proxy that offers standard features such as NAT traversal, topology hiding, session management, and traditional firewall protection but also provides security to stop voice spam, phishing attacks, identity theft, session hijacking and redirection, registrar floods, denial of service, directory harvest attacks and more. SIPassure is also uniquely suited to help financial services organizations to comply with SEC, SOX and GLB regulations due to its built-in audit and reporting functionality. Further information >>>
Check Point Software Technologies - The VPN-1 family enables companies to securely inspect SIP traffic passing in and out of the network, ensuring its integrity.
Cisco - PIX Firewall Series
Comdasys AG - SIP enabled Internet Appliance with Firewall, VPN, Bandwidth Management, SIP Proxy/Registrar, RTP
Converged Access - Converged Access Point is a layer-7 aware platform with advanced SIP-ALG Firewall; hardware based VPN; NAT. Traffic Management; multiport SIP; h.323 and MGCP integral Gateway. ADSL2+ and T1
Covergence - Covergence’s Eclipse(TM) provides security; control; monitoring; and interoperability functions for applications and services based SIP.
Session Border Controller (DC-SBC)
The experienced team at Data Connection has developed a fully portable Session Border Controller (DC-SBC) software solution designed specifically for system vendors. Data Connection’s extensive VoIP and IP routing heritage provides OEMs with a field-hardened SBC solution that is deployable immediately, delivering dramatic cost and time to market savings. Like all Data Connection products, DC-SBC is developed with the highest quality standards and is architected for unparalleled modularity, flexibility, scale, and reliability. Further information >>>
Edgewater Networks - SIP firewall and traffic shaper.
Eyeball Networks - Eyeball Networks - Scalable NAT and Firewall traversal solution for SIP end-points based on IETF standards STUN; TURN and ICE. AnyFirewall Server supports interoperability with 3rd party SIP Proxy servers.
Hotbrick Network Solutions - HotBrick - Dual WAN Firewall VPN
Ingate Systems - Ingate Firewalls and SIParators enable enterprise SIP communications while maintaining maximum control and security at the network edge. They also enable secure SIP trunks and remote SIP connectivity
Intertex Data AB 
SIP aware firewalls in the acclaimed Internet Gate series for home and office users. Built-in SIP server; FXS/FXO ports; WLAN; ADSL and can be upgraded with VPN termination and PBX functionality.
M5T - M5T develops and markets a product portfolio of SIP technologies and security solutions that focuses on real-time communication and SIP session establishment in multimedia network environments.
MediaRing - "Voizbridge" carrier class Session Controller - VoIP interconnectivity solution
Microappliances - SIP Firewall
Micromethod Technologies - Horizon is the most effective and secured solution for enabling H.323/SIP based MoIP to overcome the barriers created by firewalls and NAT. Its deployment is the simpliest and most affordable.
Nable Communications - Enterprise and Carrier class Session Border Controller(SBC) for SIP
Netscreen - Network security solutions
The Newport Networks 1460 carrier class session border controller is a key part of the infrastructure that Service Providers need in order to sell commercially viable, managed voice and multimedia services over IP to consumer and business customers, whilst also enabling IP peering to occur. It meets the need of Service Providers for carrier-class scalability, performance and resilience. It performs NAT and firewall traversal where required, provides network security, performs traffic management and, enables lawful intercept and emergency call handling in a real time VoIP and Multimedia environment.
The Newport Networks 1460 also allows physical separation of signalling and media providing ultimate deployment flexibility and scaling.
Visit Newport Networks SIP Showcase >>>
NFR Security - Intelligent Intrusion Defense software that enables enterprises to secure their networks against emerging threats and vulnerabilities that result from the increasing use of voice over IP (VoIP) Session Initiation Protocol (SIP) users.
Paradial - RealTunnel enables video/voice traversal through any firewall/NAT device due to support for STUN; TURN; ICE; HTTPS and all Web proxy and authentication schemes for any SIP client and User Agent
Ridgeway Systems and Software - Firewall Tunnelling Proxy
Ringchain - Reseller of networking equipment including Ingate Firewalls And SIParators(TM) in Taiwan
SafeNet - QuickSec 4.0 Client/Server Toolkit for SIP Security -
QuickSec is a complete IPSec / IKEv2 VPN toolkit that provides a robust and fully standards compliant security solution for protecting SIP.
SonicWall - SonicWall offers complete SIP and H.323 firewall solution.
SVA Networks - SVA Networks LCG315 is a real-time; secure; communication gateway for SMB. The LCG315 provides fully featured SIP servers; SIP PBX; integrated stateful inspection firewall and VPN support.
Sybari Software - Antigen 7.5 for Instant Messaging (IM) is the first to provide virus scanning, document filtering, and message content scanning for Microsoft® Office Live Communications Server 2003. Utilizes Session Initiation Protocol (SIP) to provide real-time virus and content scanning of IM conversations and file transfers.
Xten Networks, Inc - XTunnels - A free NAT (Network Address Translation), Firewall and Private Proxy traversal solution for SIP endpoints.