LogJams, DHE Parameters, and Other Obstacles to TLS Excellence

If you're presently volunteering to wear the hat of “SSL/TLS Vulnerability Manager”, then you’ve come to the realization that patching one vulnerability often raises others. In wake of revelations ab...
Published Jul 07, 2015
Version 1.0
security
TMOS
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James_Murphy_26
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Mar 07, 2018

Where can I get the technical details of DH parameter rotation that you mention above? Some details around how often and the fact it is on by default (and which versions it is on by default for - if that’s applicable)

 

EDIT: Found it after Googling.

 

The particular support article that details how often is K16674: TLS vulnerability CVE-2015-4000

 

It states:

 

The BIG-IP system, by default, uses custom DHE groups that are unique per install and are not static. These custom groups are also refreshed on a regular basis with the interval of regeneration varied by version. The interval is every month on BIG-IP 10.1.0 thru 11.3.0, and every hour starting in BIG-IP 11.4.0. This is enabled by default.