### SysLogD ###

  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'