Read log.essentials and log.strategies.

• log.essentials running busybox-syslogd and busybox-klogd
• log.messages diverse log messages that different programs produce
• log.syslog-ng there is no rsyslog in OpenWrt repos
• log.netcat avoid doing that
• netfilter with log create log messages with "-j LOG"
• netfilter.ulog create log messages with "-j ULOG"
• snmp employ the SNMP

Where to write logs to:

• write logs to any kind of filesystem you mounted

Please migrate this articles. For help see start and use the templates:

• http://wiki.openwrt.org/?do=search&id=log
• netfilter.ulog.mysql
• netfilter.ulog.mysql

• easy remote logging
• Project Lumberjack