How to keep sensors in sync using NTP?

[Bruno Sicchieri <bsicchieri () hotmail com>]

Hi all,

I´ve just installed Snort, MySQL and ACID on Redhat7.3 following the Snort 
Installation Manual, by Steven J. Scott 
(http://home.earthlink.net/~sjscott007/)

In one of the sections (Network Time Protocol - NTP) he explain how to 
keep accurate time on the sensors (Snort) without having to manually set 
the clocks, using NTP:

1) Editing the /etc/ntp.conf file and changing the server entry to reflect 
my timeserver and comment out the entry starting with "fudge"
------ntp.conf------
server mytimeserver.com
#fudge 127.127.1.0 stratum 10
--------------------

2) # /etc/rc.d/init.d/ntpd start
3) # chkconfig ntpd on

I´m using "ntp-4.1.1" and writing 
from "/usr/share/zoneinfo/America/Sao_Paulo" with "UTC=true" 
in /etc/sysconfig/clock file.

Everything looks OK but the sensors stay 2 hours in advance. I already 
read the NTP manual but I still can´t figure out what is happen.

Anyone could help please?

Thanks, Bruno.