internet, 2) inside corporate firewall, 3) inside corporate external
lab firewall and 4) timeserver of DSL provider.
To the file /etc/ntp/steptickers add the one very long line:
harbor.ecn.purdue.edu tick.mit.edu ntp01.cca.cpqcorp.net ntp02.cca.cpqcorp.net
alpha1.ispworks.com shell.mv.net
Turn ntp on at boot time:
chkconfig --level 45 ntpd on