On Mon, 2020-05-11 at 09:19 -0500, Spike White wrote:
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All,

sssd migration has been working very well for us -- except in the DMZs and 
heavily-restricted firewalled network segments.

For those network segments, the AD site is the same as the equivalent corporate 
location. So the typical DNS SRV record lookup reports a wealth of AD 
controllers -- most of which are blocked.   (not LDAPS traffic allowed).

A couple of AD DCs are in the DMZ, etc.

The old commercial product appears to CLDAP ping every single AD controller it 
finds (via DNS SRV lookup).  And when one responds, it queries that DC to get 
site, preferred DCs, etc.  So the commercial product work, even in the face of 
most AD DCs blocked.

adcli join and sssd appears to CLDAP ping only 4-5 AD DCs.  If they don't get a 
response back, you get an error.  If it's lucky enough to CLDAP ping an 
unblocked AD DC -- life is good, otherwise not so much.

Old adcli, use 0.9.0


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