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A very basic tutorial from techcentric.org on how to STOP VoIP security threats , CAIN, ARP and MITM attacks. Explains that an ARP Poisoning attack is a man in the middle attack (intercepting data in this case VoIP packets).
They recommend that you use SKYPE instead of SIP to avoid man in the middle attacks; [...]
Peter Cox(?) a security consultant specializing in VoIP security has a great Podcast primer on VoIP security examples. He states that there are really three categories of VoIP Security Threats:
IP level Threats - shared with the web and email and others, common knowledge to many people already
Protocol and application specific threats, based on the way [...]
If you want to switch over to VoIP instead of PSTN all you need to do is choose a VoIP service provider. Most of these providers are situated in the United States. Some VoIP service providers are: Vonage, BroadVoice, iConnectHere and Lingo.
For a monthly fee of $8-$20 they will provide you with features such as voicemail, [...]
In order to make calls with VoIP, you will need a telephone which can be connected to the World Wide Web. If you wish to use a standard phone with VoIP you can get an Analog Telephone Adapter. This will digitize your voice and enable you to make phonecalls with VoIP. This adapter has an [...]
VoIP stands out because of its convenience, quality, but also because of its low cost. Not only is the monthly fee lower than PSTN (Public Switched Telephone Network) but VoIP also offers features without charging for them.
Despite the fact that VoIP is a great service, there are still a few loose bolts. When switching to [...]
If you’re not sure if VoIP is something for you, then try it out without any charge. If you have a headset and a sound card you can download VoIP software and call anyone anywhere. Skype, Free World Dialup and Net2Phone are some of the popular names you might want to consider. These ‘soft phones’ [...]
To use VoIP your voice needs to be converted into digital data. Your voice is sampled – the sound is divided into discrete steps that are assigned a number value. This data is compressed and sent over the Internet, in packets of 1500 bytes. These packets contain information about their origin and destination. They also [...]
VoIP is an acronym for ‘Voice over Internet Protocol’, which is an ingenious internet protocol which allows you to make telephone calls over the Internet with any individual in the world who also has a VoIP-enabled system. Because of its ease of usage, low cost, and many other benefits, VoIP has been rapidly gaining popularity [...]