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The ttl value of ping briefly determines the operating system categories.
The ttl value of ping briefly determines the operating system categories.
You can often roughly judge the type of some operating systems through the ttl value of ping. Here is a summary as follows
UNIX and UNIX-like operating systems ICMP echo The TTL field value of the response is 255
Compaq Tru64 5.0 The TTL field value of the ICMP echo response is 64
Microsoft Windows NT/2K operation The TTL field value of the system ICMP echo response is 128
-
The TTL field value of the Microsoft Windows 95 operating system ICMP echo response is 32
Of course these ttl values are okay Changes can be made in Windows series systems by modifying the following key values in the registry:
[HKEY_LOCAL_MACHINE＼sys tem＼CurrentControlSet＼Services＼Tcpip＼Parameters]
"DefaultTTL"=dword:000000ff
255--- FF
128---80
64----40
32----20
The above is the detailed content of The ttl value of ping briefly determines the operating system categories.. For more information, please follow other related articles on the PHP Chinese website!
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The ttl value of ping briefly determines the operating system categories.
May 22, 2023 am 09:04 AM
The type of some operating systems can often be roughly judged by the ttl value of ping. Here is a summary: The TTL field value of the ICMP echo response of UNIX and UNIX-like operating systems is 255. CompaqTru645.0 The TTL field value of the ICMP echo response is 64. The TTL field value of the ICMP echo response of the Microsoft Windows NT/2K operating system is 128. The TTL field value of the ICMP echo response of the Microsoft Windows 95 operating system is 32. Of course, these ttl values can also be changed. Windows series systems can modify the following key values in the registry. Implementation: [HKEY_LOCAL_MACHINE＼system＼Curren
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