Daemon Log (daemon.log)
linuxSystem ConfigurationDisk ImageSIEM / Log Aggregator
Location
/var/log/daemon.log (Debian/Ubuntu) or filtered from /var/log/messages (RHEL/CentOS)Description
Log file capturing messages from system daemons and background services including cron execution, DHCP client events, network daemon messages, and miscellaneous service output not routed to dedicated log files.
Forensic Value
Daemon logs capture cron job execution confirmations with timestamps that verify whether attacker-scheduled tasks actually ran. DHCP client messages record IP address assignments and network changes. Service start/stop messages for custom daemons installed by attackers appear here when they do not have dedicated log files. This log fills gaps between the specialized auth.log and syslog.
Tools Required
grepjournalctllessawk