SysLogD

Features:
1. Handles logging
2. Unix Domain Sockets (/dev/log)
3. Internet Sockets (UDP:514)
4. Ability to log to local and remote targets

Implented as 'sysklogd' package


Primary configuration file: /etc/syslog.conf

Standard syslog.conf file contains:
1. Rules
a.facilities -> applications/daemons/network device/etc.
b. levels -> Importance of message
Range: 0-7
7 = emergency (less information)
6 = alert
5 = critical
4 = error
3 = warning
2 = notice
1 = info
0 = debug (more information)

2. Targets
a. file - /var/log/messages
b. tty - /dev/console
c. remote hosts - @IP_ADDR_of_REMOTE_HOST

'*' = catchall/wildcard to mean any facility or level
'.none' = exclusion rule


'man syslog.conf' to learn about the support facilities.levels

Task:
1. Enable UDP logging for remote Cisco gateway (192.168.75.1)
a. netstat -nul | grep 514 - reveals UDP:514 listener
b. nano /etc/sysconfig/syslog
b1. 'SYSLOGD_OPTIONS="-r"'
c. restart syslog and confirm UDP:514 listener
c1. confirm using 'netstat -nul | grep 514'
d. Configure the router using facility 'local0' and level 'info'
e. configure /etc/syslog.conf to accept 'local0.info'
f. restart or reload 'syslog'