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Lots of hackers out there in the world, and bunch of programs just scanning the internet.<br />
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I had a brand new phone installation a while back, and before I could bring up the firewall, I already had someone hacking my phone system making calls to Jamaica...
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Lots of hackers out there in the world, and bunch of programs just scanning the internet.

I had a brand new phone installation a while back, and before I could bring up the firewall, I already had someone hacking my phone system making calls to Jamaica...

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Yes, but how could they hack thru a sip phone? I'm just curious. They phone into it, are they then trying to piggy-back off my registration? They would have to find some way of taking control of the phone wouldn't they? <br />
A rogue incoming call can't do anything can it? <br />
Is there some buffer overflow attack on SIP phones?
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Yes, but how could they hack thru a sip phone? I'm just curious. They phone into it, are they then trying to piggy-back off my registration? They would have to find some way of taking control of the phone wouldn't they?
A rogue incoming call can't do anything can it?
Is there some buffer overflow attack on SIP phones?

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Yes, thanks, &nbsp;that's probably it.
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Strangely I keep getting SIP 5060 mysterious phone calls, with 'Unrecognized RTP' from Santa Monica and New York, what would the purpose of those be?<br />
They must be randomly trying IP's on port 5060, but why?
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Strangely I keep getting SIP 5060 mysterious phone calls, with 'Unrecognized RTP' from Santa Monica and New York, what would the purpose of those be?
They must be randomly trying IP's on port 5060, but why?

Mysterious SIP Brute force

Voice over IP (VoIP) is a methodology and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. Other terms commonly associated with VoIP are IP telephony, Internet telephony, broadband telephony, and broadband phone service. The term specifically refers to the provisioning of communications services (voice, fax, SMS, voice-messaging) over the public Internet, rather than via the public switched telephone network (PSTN).  Examples of the VoIP protocols are H.323, Media Gateway Control Protocol (MGCP), Session Initiation Protocol (SIP), H.248 (also known as Media Gateway Control (Megaco)), Real-time Transport Protocol (RTP), Real-time Transport Control Protocol (RTCP), Secure Real-time Transport Protocol (SRTP), Session Description Protocol (SDP), and Inter-Asterisk eXchange (IAX).