Disclaimer:
The following list is a best effort overview of some widely used TCP/IP
stacks. The information was provided by vendors and many helpful system
administrators. We would like to thank all these contributors for their precious
help ! SWITCH cannot, however, take any responsibility that the provided
information is correct. Furthermore, SWITCH cannot be made liable for any
damage that may arise by the use of this information.
+--------------------+-------+---------+---------+
| OS Version |"safe" | tcp_ttl | udp_ttl |
+--------------------+-------+---------+---------+
AIX n 60 30
DEC Pathworks V5 n 30 30
FreeBSD 2.1R y 64 64
HP/UX 9.0x n 30 30
HP/UX 10.01 y 64 64
Irix 5.3 y 60 60
Irix 6.x y 60 60
Linux y 64 64
MacOS/MacTCP 2.0.x y 60 60
OS/2 TCP/IP 3.0 y 64 64
OSF/1 V3.2A n 60 30
Solaris 2.x y 255 255
SunOS 4.1.3/4.1.4 y 60 60
Ultrix V4.1/V4.2A n 60 30
VMS/Multinet y 64 64
VMS/TCPware y 60 64
VMS/Wollongong 1.1.1.1 n 128 30
VMS/UCX (latest rel.) y 128 128
MS WfW n 32 32
MS Windows 95 n 32 32
MS Windows NT 3.51 n 32 32
MS Windows NT 4.0 y 128 128