TTL value of the Operating System

Linux kernel 2.2~2.4            255                                    
Linux Kernel 2.0                   64                         
FreeBSD                           255                
Solaris                             255
Solaris 2.x                        247
HP-UX                             255                                       
Windows 95                       32                                           
Windows 98                      128                                       
Windows NT                       54                                         
Windows 2000                   128                                       
Accel linux, linux               255 
Irix & linux                        244
 Firmware                          31
Redhat linux, unix 4.0        246
Unix 4.0                           248
Cisco router                     255
 Fedora                            64
CentOS                            64
HP-UX                            255  
Windows 9x/NT Intel          32
Windows 9x/NT Intel        128
Windows 2000 Intel          128
DigitalUnix 4.0 Alpha         60 
Unisys x Mainframe          64
Linux 2.2.x Intel               64
FTX(UNIX) 3.3 STRATUS  64
SCO R5 Compaq             64
Netware 4.11 Intel          128 
AIX 4.3.x IBM/RS6000      60
AIX 4.2.x IBM/RS6000      60
Cisco 11.2 7507              60
Cisco 12.0 2514            255
IRIX 6.x SGI                   60
FreeBSD 3.x Intel           64
OpenBSD 2.x Intel          64
Solaris 8 Intel/Sparc      64
Solaris 2.x Intel/Sparc  255  

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