Testing message to SyslogD UDP port 514.
 

Dear Linux experts,

I am trying to build a centralized log server using syslogd on Fedora Core Linux. My problem is the syslog could not accept the messages sent to syslog UDP port 514.

what I already did :
1. Iptables firewall had been checked. No blocking to UDP port 514.
2. checked using netstat -a | grep udp :
udp 0 0 *:syslog *:*

to make sure syslog worked, I tested using :
# logger -p mail.info Hello

the line Hello appeared on the /var/log/maillog.

How the message cannot be accepted by this syslog ?
Is there any other program besides "logger" to send a test message via UDP port 514 ?

Thank you in advance.