TTL (time-to-live) is the amount of time a packet exists on a network before it expires. It is an Internet Protocol mechanism designed to limit the lifespan of data on a network. Every time a packet…

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TTL (Time To Live) is a mechanism that limits packet lifespan on networks by decrementing a counter at each router hop until reaching zero, preventing infinite routing loops. The concept is fundamental to network tools like traceroute, which manipulates TTL values to map network paths, and ping, which displays remaining TTL values. TTL can also be used for OS fingerprinting in security reconnaissance since different operating systems set different default TTL values.

What is TTL? (time-to-live). TTL is the amount of time an IP packet…