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2
votes
1answer
31 views

SIP Provider stores credentials, is it required for some SIP phones?

My SIP provider stores my SIP call time password as AES encrypted in stead of hashed. I understand that SIP authentication has the capability to NOT store the password, and in stead store a ...
0
votes
1answer
42 views

How to restore devices like IP phones to productive use after unexplained activity? [closed]

I'm trying to consider how to properly vet devices that have exhibited unexplained activity for future deployment. Let's just consider my current scenario as an example, but I am interested in this ...
1
vote
0answers
436 views

Bash shell exploit using SIP

I have a SIP proxy server, that would like to test Shellshock on. I have used this https://github.com/zaf/sipshock to try and test. but this is what I get. So I just want to know generally what is ...
0
votes
0answers
12 views

SIP DoS classifications

I would like to understand below SIP DoS attacks Message Payload Tampering [implementation errors, SIP bugs] Flow Tampering [CPU, Bandwidth, Memory] Message Flooding [lack of authentication or ...
9
votes
3answers
497 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 ...
7
votes
1answer
12k 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
874 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
1k 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 ...