While SIP is an excellent protocol which has made the IP communications market a much better place, there are security challenges with this protocol as it is very open and not inherently secure. It is ironic that the openness of the protocol itself is exactly what makes it a challenge to secure.
To aid people looking for more information on securing SIP, in areas such as SIP trunking and enterprise SIP deployment, TMC has a free webinar taking place on April 10, 2008. You can also view an archived version of the webinar if you can’t make this date.
I hope you enjoy the presentation.