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VoIP Security: Difference between revisions
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Try to explain the difference between Authentication Username and (ordinary) Username. Think it needs an example ro make it clearer...
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The system can send advisory messages when a billing amount is reached. This is set per number on the [[:Category:Control Pages|Control Pages]]. The email set for the Number and for the Login is used.
During the month, each time the amount is reached an email will be sent. At the end of the month the amount is reset.
This feature was added in October 2011, the default warning level is £10, and for numbers
== IP and User Agent Warning Emails ==
Solution: Firewall SIP as explained above.
Also some equipment may support the disabling of calls being sent direct from the Internet. For example, Grandstream firmware often has a feature ''Allow Incoming SIP Messages from SIP Proxy Only'', which is worth using (unless you need to accept such calls).
Your equipment may also support a feature whereby incoming INVITE messages are only accepted if they use the User ID which you used when registering with the SIP server, maybe named ''Check SIP User ID for incoming INVITE''. The SIP server will know this User ID, random SIP spammers will not. This User ID is ''not'' the Authentication Username (e.g. +442083xxxxxx), but what is often termed ''Username'' in equipment configuration (where you can set a Username and a Real Name, e.g. ''fred'' and ''Fred Bloggs'') which is used in SIP calls.
[[File:aa-button.png|link=http://aa.net.uk/telecoms.html|Telecoms page on our main website]]
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