Countermeasures This week is our finale to our 4 part series VoIP Systems: Challanges & Solutions. The various security issues mentioned above are major detriments to VoIP infrastructure and can cause large scale loss of money and intellectual property. Countermeasures for these security issues are given below in greater detail: Encryption: Encryption has yet to be completely integrated into VoIP protocols – only end-to-end encryption techniques exist for current VoIP. The pr

VoIP Security Issues Call interception: One of the most commonly encountered problems with VoIP setups is data that passes through VoIP gateways are not encrypted by default. If a malicious attacker is able to find the source of the stream he is easily able to hijack the signal and listen in on all our conversations.The attacker only requires physical access to a LAN segment that the VoIP packets travel across. Most enterprises use Ethernet switches instead of hubs and this l

VoIP Quality of Service Issues Jitter: Jitter refers to non-uniform packet delays. It is often caused by low bandwidth situations in VoIP and can be exceptionally detrimental to the overall QoS. Variations in delays can be more detrimental to QoS than the actual delays themselves. Jitter can cause packets to arrive and be processed out of sequence. Latency: Latency in VoIP refers to the time it takes for a voice transmission to go from its source to its destination. Ideally,