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8
votes
3answers
408 views

Is secure Caller ID possible for SIP / VOIP?

Is there any way (standard, proposed or draft) that will allow for secure Caller ID over SIP / VOIP networks? I have constantly heard that Caller ID is insecure when used over these services. Can ...
5
votes
1answer
5k views

TLS Handshake gets torn down

I am trying to debug a TLS handshake between two SIP trunk endpoints: .75 and .82. Mutual authentication is being used. .75 sends: Client Hello Certificate, Client Key Exchange Certificate ...
2
votes
1answer
712 views

COMMUNITY SIP TCP/IP message flooding directed to SIP proxy

I have installed Snort IDS and most alarm is: "COMMUNITY SIP TCP/IP message flooding directed to SIP proxy" And i use home DSL Internet connection , should i be worried about this alarm ? I have ...
1
vote
2answers
651 views

How to mitigate SIP Reflection Attacks?

SIP has a practical need to be widely available, but its services are prone to being spoofed as reflectors used in DDoS attacks. A freeswitch server I manage has seen heaps of registration requests ...