Security; Access Security; Data Security - Dialogic DMG1000 User Manual

Overview
receive H.323 calls. SIP devices register with the VoIP Address Translator to sent and receive SIP
calls.
Note: In H.323 mode, the VoIP Address Translator is a Gatekeeper. In SIP mode, the VoIP Address
Translator is a SIP Registration Server and/or a SIP Proxy Server.
Note: H.323 is only supported in Version 5.1 SU1 Software or earlier.
The VoIP Address Translator can provide network services such as:
• Controlling the number and type of connections allowed across the network.
• Helping to route a call to the correct destination.
Determining and maintaining the network address for incoming calls.
•
Without a VoIP Address Translator, all IP destination addresses must be specified to the Media
Gateway as IP v4 addresses (ex. 10.10.4.128). IP terminal devices must also explicitly specify the
IP address of the Media Gateway as the desired gateway when originating PBX calls.
With a VoIP Address Translator, IP destination addresses may be specified to the Media Gateway
as e-mail addresses, alphanumeric aliases, E.164 telephone numbers, domain names, and any other
format supported by the VoIP Address Translator. IP terminal devices may explicitly specify the IP
address of the Media Gateway as the desired gateway, or they may rely on the VoIP Address
Translator to address the Media Gateway using the gateway prefix configured on the Media
Gateway.
1.4

Security

The Media Gateway supports two kinds of security:
•

Access Security

•

Data Security

1.4.1 Access Security
Access to the Media Gateway is secured by requiring a user-name and password to login to the
gateway. The user-name and password are required for all interfaces of the Media Gateway (Web
interface, serial interface, and telnet interface).
1.4.2 Data Security
Data security for the Media Gateway includes the use of various secure protocols when
transmitting and receiving data. The Media Gateway supports security for three types of data:
• HTTP security - Data transmitted between the Media Gateway and a Web browser. To secure
HTTP, the Media Gateway uses HTTPS protocol.
• Call Control security - Data used to setup and tear down a call. To secure Call Control, the
Media Gateway uses Transport Layer Security (TLS) on top of SIP.
28
®
Dialogic 1000 and 2000 Media Gateway Series User's Guide — September 2007
Dialogic Corporation