Enabling the TCP timestamp option in hping3 is used to estimate what about the target?

Enabling the TCP timestamp option in hping3 is used to estimate what about the target?

• A. Timestamp Update Frequency and Uptime
• B. Port Availability
• C. Network MTU
• D. TLS Version

Answer: (A)

TCP timestamps carry a clock value from the sending host. This value changes over time and is echoed back by the peer, which lets you see how fast the remote clock is advancing and, roughly, how long the host has been running. When you enable the TCP timestamp option in hping3, you can observe the TSval field in responses and compare it to the current time to estimate two things: the timestamp update frequency (how quickly the remote clock is ticking) and the target’s uptime (how long it has been since it last booted). The other options aren’t determined by the TCP timestamp value: port availability requires observing whether a host responds to specific port probes, MTU relates to packet size limits and path characteristics, and TLS version is negotiated during a TLS handshake, not conveyed by the TCP timestamp option.

TCP timestamps carry a clock value from the sending host. This value changes over time and is echoed back by the peer, which lets you see how fast the remote clock is advancing and, roughly, how long the host has been running. When you enable the TCP timestamp option in hping3, you can observe the TSval field in responses and compare it to the current time to estimate two things: the timestamp update frequency (how quickly the remote clock is ticking) and the target’s uptime (how long it has been since it last booted).

The other options aren’t determined by the TCP timestamp value: port availability requires observing whether a host responds to specific port probes, MTU relates to packet size limits and path characteristics, and TLS version is negotiated during a TLS handshake, not conveyed by the TCP timestamp option.