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reply to tanzam75

Re: DDoS Attacks, Is Any VoIPP Less Susceptable ?

Thanks for sharing that example. It just shows that some development teams want to improve their product, while others have obvious attitude problems, that makes them blind to any suggestions... The latter I saw a lot with FreeSWITCH development. They keep old bugs opened indefinitely without any attempt to fix... not to mention implementing new functions, that will benefit everyone.

Security of the SIP switch (always opened to public access) is very serious issue to ignore...

So, I'd suggest, look at SIP messages sent by your VSP and particularly at its "User-Agent" line and if it says "FreeSWITCH" don't be surprised if at some point of time it will go down and you'll not have any service at all due to some DDoS attack... (which could happen at any time, BTW).
Keep it simple, it'll become complex by itself...