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What is Session Border Controller and the Role of SBC in a VoIP Network

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Sindhav Bhageerath
What is Session Border Controller and the Role of SBC in a VoIP Network

A session border controller can best be described as an appliance that sits at the edge of networks.

While security is no less important, the importance of media components and interoperability cannot be underplayed.

While hardware session border controllers were the norm today most such solutions are software based with more functionality such as least cost routing and billing.

Hackers may carry out a scan of the internal network port to footprint the topology and then launch frauds, thefts or denial of service (DoS).

Eavesdropping is possible wherein an attacker sniffs sessions and packets with malintent.

SBCs can prevent outbound telnet or SSH thereby acting as a guard against hijacking attempts.

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Sindhav Bhageerath
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