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NTP Configuration
By Matt | January 24, 2008
1) Install ntpd if not already there. Link it to your default startup directory.
ln -s /etc/init.d/ntpd /etc/rc3.d/S99ntpd
2) /etc/ntp/step-tickers:
time.nist.gov
pool.ntp.org
3) In /etc/sysconfig/iptables open up the port:
# NTP is only accessible via the Gig Backbone:
-A RH-Firewall-1-INPUT -m state –state NEW -m udp -p udp –dport 123 -s 192.168.1.0/0 -j ACCEPT
4) Now (re)start iptables & ntpd
5) On internal-only servers, install ntpd.
6) Set step-ticker to point to internal server. If using hostname, verify /etc/hosts and/or the /etc/resolv.conf is set properly to allow the hostname to resolve.
7) Link it to your default startup directory.
Start it
Topics: Linux, Networking, Sysadmin Tools | No Comments »
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