Extension Security

Secure the VoIP extensions.

SIP Registration Port

To prevent malicious registration of SIP extensions, go to PBX>SIP Settings > Transports  to change the UDP Port.

Note: After you change the SIP UDP registration port, you need to change the relevant firewall rules for the SIP port.

Extension Password

The PBX will generate a random password for a new extension. If you want to set the password manually, the password should meet the following requirements:

• At least 8 characters
• At least 1 number
• At least 1 uppercase letter
• At least 1 lowercase letter
• Avoid word or name

For example, avoid word like openvox, password, happy etc. Use random password like L6!q7dQeGw4Q7m.

Restrict Extension Registration

You can limit which IP address or which User Agent is allowed to register a certain extension.

Go to  PBX  >  Extensions to edit the extension’s Advanced setting.

SRTP

SRTP is used to encrypt audio streams. If SRTP is enabled for an extension, the extension will support SRTP and will allow negotiation with calls without SRTP.

Go to  PBX > Extensions to edit the extension’s Advanced setting.