eolivelli commented on code in PR #2015:
URL: https://github.com/apache/zookeeper/pull/2015#discussion_r1234484138


##########
zookeeper-docs/src/main/resources/markdown/zookeeperAdmin.md:
##########
@@ -1834,6 +1834,14 @@ and [SASL authentication for 
ZooKeeper](https://cwiki.apache.org/confluence/disp
 
     This parameter has no effect, unless you enable the MultiAddress feature 
by setting *multiAddress.enabled=true*.
 
+* *fips-mode* :
+    (Java system property: **zookeeper.fips-mode**)
+    **New in 3.8.2:**
+    Enable FIPS compatibility mode in ZooKeeper. If enabled, the custom trust 
manager (`ZKTrustManager`) that is used for 
+    hostname verification will be disabled in order to comply with FIPS 
requirements. As a consequence, hostname verification is not
+    available in the Quorum protocol, but still can be set in client-server 
communication. Default: **true** (3.9.0+), 

Review Comment:
   This sentence looks scary: aren't we really validating dns hostnames? My 
understanding was that we enabled the https validation in Netty.
   
   I wonder if FIPS may allow that hostname verification is disabled.
   
   



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