X lite softphone phone spoofing
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Once you start getting info displayed via the sip debug you know your network is set right and then if it still does not connect properly it can be a server config issue. Next check all the other equipment that might be in between like a router. So please double check the firewall, make sure that the ports being forwarded are UDP, opening tcp ports are useless and potentially a security risk. If the traffic can’t get to the server then nothing you do at the server will fix that. Like I stated earlier that becomes a network/firewall/router issue. So when you hit it from the outside you are not seeing sip being info being displayed then it is NOT making it to the machine. So if you are not getting anything then you are NOT getting stuff forwarded. Sip debug will show ANY traffic that hit’s the sip port (5060). Most firewalls do not do/allow this (cisco pix and asa’s are the exception to that if the loopback option is enabled). When you are behind a firewall you can’t use the external IP as it would have to go out the firewall and loop back on the same interface. Nobody has asked if there is a firewall on the remote side? Sometimes port 5060 needs to be forwarded on that to the phone (older non-sip aware firewalls for example). I don’t know the firewall you are using it might not properly forward udp? So are you SURE you forwarded UDP ports and NOT TCP ports? as sip is a UDP based forwarding TCP ports will get you nowhere which is basically what you have now.
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That’s the problem with editing config files you are removing a important part of the info.īasically if the firewall is setup properly then packets would be forwarded to the asterisk box and you WOULD have output, since you have none the firewall is not forwarding properly. The sip_nat.conf looks with assuming the IP EDITED is the external IP of the firewall that has the ports being forwarded. But when the the phone is external it does not work then it is a firewall/router issue. If the phone works internal then the userID and password parts are right, the extension is configured correctly. New CDP, CUCDM and Cisco Skinny modules and techniques of Viproy will be demonstrated in the workshop as well.I agree with bubba on this, it is a network/router issue.
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In this hands-on workshop, attendees will learn about basic attack types for UC infrastructure, advanced attacks to the SIP protocol weaknesses, Cisco Skinny protocol hacking, hacking Cisco CUCDM and CUCM servers, network infrastructure attacks, value added services analysis, Cdr/Log/Billing analysis and Viproy VoIP pen-test kit to analyse VoIP services using novel techniques. The workshop contains live demonstration of practical VoIP attacks and usage of the Viproy modules. Furthermore, Viproy provides these attack modules in the Metasploit Framework environment with full integration. It has a dozen modules to test trust hacking issues, information collected from SIP and Skinny services, gaining unauthorised access, call redirection, call spoofing, brute-forcing VoIP accounts, Cisco CUCDM exploitation and debugging services using as MITM. Attacking VoIP services requires limited knowledge today with the Viproy Penetration Testing Kit (written by Fatih). Also the well-known attacks to the network infrastructure will be combined with the current VoIP vulnerabilities to test the target workshop network. This workshop includes basic attack types for UC infrastructure, advanced attacks to the SIP and Skinny protocol weaknesses, network infrastructure attacks, value added services analysis, Cdr/Log/Billing analysis and Viproy use to analyse signalling services using novel techniques.
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They can be hacked with legacy techniques, but a set of new attacks will be demonstrated in this workshop. Signalling protocols are the centre of UC environments, but also susceptible to IP spoofing, trust issues, call spoofing, authentication bypass and invalid signalling flows. This workshop is designed to demonstrate these cutting edge VoIP attacks, and improve the VoIP skills of the incident response teams, penetration testers and network engineers. VoIP attacks have evolved, and they are targeting Unified Communications (UC), commercial services, hosted environment and call centres using major vendor and protocol vulnerabilities.