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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. OS Compatibility Windows: 8 Windows ® 10, Windows 8, Windows 8.1, Windows 7, Windows 7 SP1, Windows Vista ® SP1, Vista SP2, Windows XP SP3 32-bit Mac: 9 Mac OS ® X v10.7.5 - 10.11 Standard Interface. Contents XP-620 User's Guide.
TTL (Time To Live) is a timer value included in packets sent over networks that tells the recipient how long to hold or use the packet before discarding and expiring the data (packet). TTL values are different for different Operating Systems. So, you can determine the OS based on the TTL value. You can get the TTL value by pinging an address. Here is the output got by pinging 'subinsb.com' on my system :
As you can see from the output, you got the TTL value. Since this website is hosted on a Red Hat system, it returned 57 which is close to 64 (TTL default value of Linux system). So, from this we can understand the OS of the remote system. Here are the default TTL values of different devices / Operating Systems :
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 |
244 Catbears Mac Os X
I will update this table in the future when there's a release of new important OS whenever I get the time. You can get the short version of default TTL values by this table :
Device / OS | TTL |
*nix (Linux/Unix) | 64 |
Windows | 128 |
Solaris/AIX | 254 |
You can find it yourself by pinging localhost as mentioned by :
TTL (Time To Live) is a timer value included in packets sent over networks that tells the recipient how long to hold or use the packet before discarding and expiring the data (packet). TTL values are different for different Operating Systems. So, you can determine the OS based on the TTL value. You can get the TTL value by pinging an address. Here is the output got by pinging 'subinsb.com' on my system : Bitfight: defense mac os.
As you can see from the output, you got the TTL value. Since this website is hosted on a Red Hat system, it returned 57 which is close to 64 (TTL default value of Linux system). So, from this we can understand the OS of the remote system. Here are the default TTL values of different devices / Operating Systems :
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 |
My universe - fashion boutique mac os. I will update this table in the future when there's a release of new important OS whenever I get the time. You can get the short version of default TTL values by this table :
Device / OS | TTL |
*nix (Linux/Unix) | 64 |
Windows | 128 |
Solaris/AIX | 254 |
244 Catbears Mac Os Update
You can find it yourself by pinging localhost as mentioned by :