P0f v2 is a versatile passive OS fingerprinting tool. P0f can identify the

operating system on:



- machines that connect to your box (SYN mode),

- machines you connect to (SYN+ACK mode),

- machine you cannot connect to (RST+ mode),

- machines whose communications you can observe.



P0f can also do many other tricks, and can detect or measure the following:



- firewall presence, NAT use (useful for policy enforcement),

- existence of a load balancer setup,

- the distance to the remote system and its uptime,

- other guy s network hookup (DSL, OC3, avian carriers) and his ISP.

-P0f v2 is a versatile passive OS fingerprinting tool. P0f can identify the

operating system on:



　- machines that connect to your box (SYN mode),

　- machines you connect to (SYN+ACK mode),

　- machine you cannot connect to (RST+ mode),

　- machines whose communications you can observe.



P0f can also do many other tricks, and can detect or measure the following:



　- firewall presence, NAT use (useful for policy enforcement),

　- existence of a load balancer setup,

　- the distance to the remote system and its uptime,

　- other guy s network hookup (DSL, OC3, avian carriers) and his ISP.