UCSniff
A security consultant with expertise in protecting phone conversations as they travel over the internet has unveiled a new tool that demonstrates just how vulnerable voice over internet protocol, or VoIP, calls are to interception.
UCSniff bundles a hodgepodge of previously available open-source applications into a single software package that helps penetration testers assess the security of VoIP calls carried over a client's network. It also introduces several new features that make eavesdropping on specific targets a point-and-click undertaking.
UCSniff runs on a laptop that can be plugged in to the ethernet port of the organization being probed. From there, a VLAN hopper automatically traverses the virtual local area network until it accesses the part that carries VoIP calls. Once the tool has gained unauthorized access, UCSniff automatically injects spoofed ARP, or address resolution protocol, packets into the network, allowing all voice traffic to be routed to the laptop.
UCSniff streamlines eavesdropping by allowing an attacker to zero in on the conversations of particular users. Targets can be selected by extension number or dial-by-name features, making it easy to listen to all calls made by a specific individual - such as an organization's CEO. Eavesdropping can be further fine-tuned by listening only to calls the CEO makes to a specific person - such as a chief financial officer.
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