All,

We has been struggling with a recent patch from Ubuntu that broke encrypted 
connections
between some of our internal servers.

Long story short: Ubuntu now uses GNU-TLS and the latest security patch has 
removed support for SHA-1.
Error messages in Ubuntu or in LDAP were not explicit enough to make it obvious.

Some of you may face this issue between RADIUS and LDAP (still used quite a bit 
for 802.1X).
This issue will most likely affect internally issued infrastructure 
certificates!

Fix: Do not patch GNU-TLS (is this a good idea?) or recreate your ROOT CA to 
support SHA-2 family

Hope this helps. Chad (ANYROAM’s CTO) pulled whatever hairs he had left on this 
one, so we felt like sharing :)

If you have more info on this, please share.

Philippe

Philippe Hanset, CEO
www.anyroam.net
Operator of eduroam-US
+1 (865) 236-0770

GPG key id: 0xF2636F9C







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