in 95% of all cases, ntpd is installed to update the OS clock only (instead of providing NTP services for others to query), hence configure it to not listen on NTP queries by default

ntp/ntp.conf

@@ -15,3 +15,6 @@ server     pool.ntp.org
 server     pool.ntp.org
 server     pool.ntp.org
 
+#   local operation only
+restrict default ignore
+

ntp/ntp.spec

@@ -33,7 +33,7 @@ Class:        CORE
 Group:        Network
 License:      BSD-style
 Version:      4.2.0
-Release:      20041207
+Release:      20050713
 
 #   package options
 %option       with_fsl     yes