SysLogD

###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'