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Operating Systems can be Detected using Ping Command

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Operating Systems can be detected using Ping Command, Ping is a computer network administration software utility, which used to find the Availability of a host on an Internet Protocol (IP) network.

Ping operates by sending Internet Control Message Protocol (ICMP) Echo Request packets to the target host and waiting for an ICMP Echo Reply.

TTL is simply meant, how long a resolver is supposed to cache the DNS query before the query expires and a new one needs to be done.

These TTL values differ between the Operating system. Here you find TTL value for Range of servers. Reference subinsb.

Device / OS Version Protocol TTL
AIX   TCP 60
AIX   UDP 30
AIX 3.2, 4.1 ICMP 255
BSDI BSD/OS 3.1 and 4.0 ICMP 255
Compa Tru64 v5.0 ICMP 64
Cisco   ICMP 254
DEC Pathworks V5 TCP and UDP 30
Foundry   ICMP 64
FreeBSD 2.1R TCP and UDP 64
FreeBSD 3.4, 4.0 ICMP 255
FreeBSD 5 ICMP 64
HP-UX 9.0x TCP and UDP 30
HP-UX 10.01 TCP and UDP 64
HP-UX 10.2 ICMP 255
HP-UX 11 ICMP 255
HP-UX 11 TCP 64
Irix 5.3 TCP and UDP 60
Irix 6.x TCP and UDP 60
Irix 6.5.3, 6.5.8 ICMP 255
juniper   ICMP 64
MPE/IX (HP)   ICMP 200
Linux 2.0.x kernel ICMP 64
Linux 2.2.14 kernel ICMP 255
Linux 2.4 kernel ICMP 255
Linux Red Hat 9 ICMP and TCP 64
MacOS/MacTCP 2.0.x TCP and UDP 60
MacOS/MacTCP X (10.5.6) ICMP/TCP/UDP 64
NetBSD   ICMP 255
Netgear FVG318   ICMP and UDP 64
OpenBSD 2.6 & 2.7 ICMP 255
OpenVMS 07.01.2002 ICMP 255
OS/2 TCP/IP 3.0   64
OSF/1 V3.2A TCP 60
OSF/1 V3.2A UDP 30
Solaris 2.5.1, 2.6, 2.7, 2.8 ICMP 255
Solaris 2.8 TCP 64
Stratus TCP_OS ICMP 255
Stratus TCP_OS (14.2-) TCP and UDP 30
Stratus TCP_OS (14.3+) TCP and UDP 64
Stratus STCP ICMP/TCP/UDP 60
SunOS 4.1.3/4.1.4 TCP and UDP 60
SunOS 5.7 ICMP and TCP 255
Ultrix V4.1/V4.2A TCP 60
Ultrix V4.1/V4.2A UDP 30
Ultrix V4.2 – 4.5 ICMP 255
VMS/Multinet   TCP and UDP 64
VMS/TCPware   TCP 60
VMS/TCPware   UDP 64
VMS/Wollongong 1.1.1.1 TCP 128
VMS/Wollongong 1.1.1.1 UDP 30
VMS/UCX   TCP and UDP 128
Windows for Workgroups TCP and UDP 32
Windows 95 TCP and UDP 32
Windows 98 ICMP 32
Windows 98, 98 SE ICMP 128
Windows 98 TCP 128
Windows NT 3.51 TCP and UDP 32
Windows NT 4.0 TCP and UDP 128
Windows NT 4.0 SP5-   32
Windows NT 4.0 SP6+   128
Windows NT 4 WRKS SP 3, SP 6a ICMP 128
Windows NT 4 Server SP4 ICMP 128
Windows ME ICMP 128
Windows 2000 pro ICMP/TCP/UDP 128
Windows 2000 family ICMP 128
Windows Server 2003   128
Windows XP ICMP/TCP/UDP 128
Windows Vista ICMP/TCP/UDP 128
Windows 7 ICMP/TCP/UDP 128
Windows Server 2008 ICMP/TCP/UDP 128
Windows 10 ICMP/TCP/UDP 128

Operating Systems can be detected using Ping Command

We should run the traceroute command first to determine the hops between the Target and the destination.

tracert gbhackers.com

Operating Systems can be detected using Ping Command

Total number of hops = 11

Now Ping the Domain ping gbhackers.com

Operating Systems can be detected using Ping Command

TTL value is TTL=53, By making the Sum of TTL value and number of hops we can define the operating system (53 + 11 = 64), we can conclude that there is a Linux Machine Running.

This how Operating Systems can be detected using Ping Command.

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