Currently we have the following in our Redhat NTP servers.
restrict xx.pool.ntp.org nomodify notrap nopeer noquery
restrict 0.yy.pool.ntp.org nomodify notrap nopeer noquery
restrict 1.yy.pool.ntp.org nomodify notrap nopeer noquery
There are further hardening that could be done so wud like
to get advice here which ones in the URL below are more commonly used &
will not cause disruption:
We have Cisco routers/devices acting as NTP server, what are
the hardening commands/settings that generally people apply?
We have Windows 2008 R2 & Redhat Linux running as DNS.
What are the hardening needed (& how to verify the hardening
has been implemented) to harden the DNS (not the OS but the