Bugtraq mailing list archives

Re: TCP Timestamping and Remotely gathering uptime information


From: bert hubert <ahu () DS9A NL>
Date: Mon, 19 Mar 2001 19:48:23 +0100

On Sat, Mar 17, 2001 at 12:31:22AM +0000, Stephen White wrote:
On Wed, Mar, 2001, Bret wrote:
either by creating a new 'timestamp clock' for
each TCP session (that uses timestamps)

You can't do this .. it breaks the use of such timestamps for things
like TCP Sequence number wrap-around protection on fast networks
(gigabit).

Yes you can. PAWS is not needed to differentiate *different* sessions,
unless you also cycle through all your local ports in a few seconds. Which
is exceedingly unlikely.

Regards,

bert hubert

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