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Training Camp • Cybersecurity Glossary
Null0 is a virtual interface in a router that is used to discard unwanted traffic, acting as a black hole for packets with nowhere else to go.
Null0 Definition: Null0 is a virtual interface in a router that is used to discard unwanted traffic, acting as a black hole for packets with nowhere else to go.
Null0 is a virtual interface in routing configurations that serves as a "black hole" for unwanted traffic. It is used to discard packets without sending any notification back to the source. This can help mitigate network attacks, prevent routing loops, and manage traffic efficiently by redirecting undesirable packets to a null interface.
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