troubleshooting Question

adverse Impact of disabling Tcp_timestamps in Xolaris

Avatar of sunhux
sunhux asked on
Network SecurityNetwork OperationsUnix OS
20 Comments6 Solutions494 ViewsLast Modified:
Planning to disable it for security reason but have heard F5 advise against it for F5 .


https://docs.oracle.com/cd/E19455-01/806-6779/6jfmsfr8a/index.html
Url above also has some indication

Q1:
What's "Commitment Level" unstable?


https://www.ietf.org/rfc/rfc1323.txt
Url above also indicates something:
...working with TCP's that do not implement the extensions.  The timestamps are used for 2 distinct mechanisms:
   RTTM (Round Trip Time Measurement) and PAWS (Protect Against Wrapped Sequences).

Q2:
Does any Web applications & Solaris 10 x86 VMs need/use RTTM & PAWS ?

Q3:
Can I safely say that disabling Tcp_timestamps is only a concern on congested networks
esp WAN but on Gigabit LAN, its performance impact is negligible?
ASKER CERTIFIED SOLUTION
btanExec Consultant
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