SSL Session Ticket Expiration
nginx-forum at nginx.us
Tue Nov 18 12:25:01 UTC 2014
in a blogpost from tim taubert of firefox/mozilla - team he states, when
wanting to have PFS:
"The best you can do to provide forward secrecy to visitors is thus again
session ticket support until a proper solution is available."
when using ssl_session_cache / ssl_session_timeout, because:
"Just as Apache, Nginx should provide a configuration directive to allow
cache entries to be
purged automatically after a certain time. Any entries not purged properly
could simply be read from
memory by an attacker with full access to the server.
You guessed right, the ssl_session_timeout directive again only applies when
trying to resume a
session at the beginning of a connection. Stale entries will not be removed
automatically after they time out."
What would be a temporary solution for this? a small ssl_session_cache?
nginx reload every 12 hours
to flush the ssl_session_cache?
Posted at Nginx Forum: http://forum.nginx.org/read.php?2,254881,254881#msg-254881
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