Chapter 18 - SIP Protocol Features
SIP Trusted Sources
262
Mediatrix 4104
2.
Restart the Mediatrix 4104 so that the changes may take effect.
SIP Trusted Sources
You can configure the Mediatrix 4104 so that it only accepts SIP messages coming from one of six trusted IP
addresses. All other SIP messages are ignored. This source address validation takes place at the IP level and
does not depend on the SIP header or body.
To configure the SIP trusted sources feature:
1.
In the
sipMIB
, set the
sipTrustedSourcesIpAddress
variable with the IP address of a trusted source
of SIP messages.
You can enter up to six addresses.
2.
Enable the SIP trusted sources feature by setting the
sipTrustedSourcesEnable
to
enable
.
If you set the variable to
disable
, the Mediatrix 4104 does not validate the source address of SIP
messages at the IP level.
NAT Traversal
The Mediatrix 4104 may be used in a private domain that is not directly connected to the IP network. For
instance, this may be the case for ITSP (Internet Telephony Service Provider) clients that have a small private
network. This private network is connected to the public IP network through the NAT (Name Address
Translation) technology.
Currently only one Mediatrix unit can be deployed behind a standard NAT.
You can configure the Mediatrix 4104 with the public IP address of the NAT system, which allows to reach the
unit. SIP packets sent by the Mediatrix 4104 contain the NAT address configured as SIP contact. If the NAT
service is not activated, the real IP address of the Mediatrix 4104 is used.
This method is recommended when the public IP address of the NAT system is static or does not change
regularly since it would cause downtime until it is changed manually.
auth-int
The SIP User Agent applies authentication with integrity protection (see
RFC 2617).
Table 167:
Quality of Protection (Continued)
Parameter
Description
Network Address Translation
Network Address Translation (NAT) is a method of connecting multiple computers to the Internet (or any
other IP network) by using one IP address. This allows home users and small businesses to cheaply and
efficiently connect their network to the Internet. The basic purpose of NAT is to multiplex traffic from the
internal network and present it to the Internet as if it was coming from a single computer having only one
IP address.
NAT automatically provides firewall-style protection without any special set-up because it only allows
connections originating on the inside network. This means, for instance, that an internal client can
connect to an outside FTP server, but an outside client cannot connect to an internal FTP server because
it would have to originate the connection, and NAT does not allow that.
Summary of Contents for Mediatrix 4104
Page 23: ...Installation and Web Page Configuration ...
Page 24: ...Page Left Intentionally Blank ...
Page 136: ...Chapter 5 Web Interface Telephony Miscellaneous 114 Mediatrix 4104 ...
Page 144: ...Chapter 6 Web Interface Advanced STUN Configuration 122 Mediatrix 4104 ...
Page 145: ...SNMP Configuration ...
Page 146: ...Page Left Intentionally Blank ...
Page 184: ...Chapter 8 IP Address and Network Configuration Ethernet Connection Speed 162 Mediatrix 4104 ...
Page 196: ...Chapter 10 DNS SRV Configuration DNS SRV Oriented Settings 174 Mediatrix 4104 ...
Page 226: ...Chapter 12 Configuration File Download Configuration File Example 204 Mediatrix 4104 ...
Page 242: ...Chapter 13 Software Download Emergency Software Procedure 220 Mediatrix 4104 ...
Page 268: ...Chapter 15 Voice Transmissions User Gain 246 Mediatrix 4104 ...
Page 278: ...Chapter 17 Bypass Configuration Bypass Connector Settings 256 Mediatrix 4104 ...
Page 322: ...Chapter 21 Digit Maps Digit Map Examples 300 Mediatrix 4104 ...
Page 350: ...Chapter 24 Telephony Attributes Call Rejection 328 Mediatrix 4104 ...
Page 362: ...Chapter 27 Quality of Service QoS VLAN 340 Mediatrix 4104 ...
Page 366: ...Chapter 28 Syslog Daemon Syslog Daemon Configuration 344 Mediatrix 4104 ...
Page 370: ...Chapter 29 Statistics RTP Statistics 348 Mediatrix 4104 ...
Page 385: ...Appendices ...
Page 386: ...Page Left Intentionally Blank ...
Page 400: ...Appendix B Standard Hardware Information Warranty 378 Mediatrix 4104 ...
Page 404: ...Appendix C Cabling Considerations RJ 11 Telephone Cable 382 Mediatrix 4104 ...
Page 446: ...Appendix E Glossary Wide Area Network WAN 424 Mediatrix 4104 ...