Friday, 27 March 2009

A Sample syslog-ng conf file

################################################################################
# Syslog-ng configuration file. Revised, and rewrited by me (Shahjahan Siraj )
#
###############################################################
# First, set some global options.

options {
# use_fqdn(yes);
# use_dns(yes);
# dns_cache(yes);
keep_hostname(yes);
long_hostnames(off);
sync(1);
log_fifo_size(1024);
};

###############################################################
#
# This is the default behavior of sysklogd package
# Logs may come from unix stream, but not from another machine.
#
#source src { unix-stream("/dev/log"); internal(); };


source src {
# don't read from /proc/kmsg and run klogd also (Linux)
pipe("/proc/kmsg");
# file("/proc/kmsg") log_prefix("kernel: ");
unix-stream("/dev/log");
# unix-stream("/chroot/named/dev/log");
internal();
udp();
# udp(ip("10.0.5.8") port(514));
tcp(port(5140) keep-alive(yes));
# tcp(ip("10.9.9.3") port(5140) keep-alive(yes));
};


###############################################################
# After that set destinations.

# First some standard logfile
#
destination authlog { file("/var/log/auth.log"); };
destination syslog { file("/var/log/syslog"); };
destination cron { file("/var/log/cron.log"); };
destination daemon { file("/var/log/daemon.log"); };
destination kern { file("/var/log/kern.log"); };
destination lpr { file("/var/log/lpr.log"); };
destination user { file("/var/log/user.log"); };
destination uucp { file("/var/log/uucp.log"); };


# This files are the log come from the mail subsystem.
#
destination mail { file("/var/log/mail.log"); };
destination maillog { file("/var/log/maillog"); };
destination mailinfo { file("/var/log/mail.info"); };
destination mailwarn { file("/var/log/mail.warn"); };
destination mailerr { file("/var/log/mail.err"); };

# Logging for INN news system
#
destination newscrit { file("/var/log/news/news.crit"); };
destination newserr { file("/var/log/news/news.err"); };
destination newsnotice { file("/var/log/news/news.notice"); };

# Some `catch-all' logfiles.
#
destination debug { file("/var/log/debug"); };
destination messages { file("/var/log/messages"); };

# The root's console.
#
destination console { usertty("root"); };

# Virtual console.
#
destination console_all { file("/dev/tty8"); };

# The named pipe /dev/xconsole is for the nsole' utility. To use it,
# you must invoke nsole' with the -file' option:
#
# $ xconsole -file /dev/xconsole [...]
#
destination xconsole { pipe("/dev/xconsole"); };

#
# scripts that accept syslog messages and mail them out
#
destination mail-alert { program("/usr/local/bin/syslog-mail"); };
destination mail-alert-perl { program("/usr/local/bin/syslog-mail-perl"); };

#
# hack to get swatch to read from stdin
#
destination swatch { program("/usr/bin/swatch --read-pipe=\"cat /dev/fd/0\""); };

#
# destination database
#
destination sqlsyslogd {
program("/usr/local/sbin/sqlsyslogd -u sqlsyslogd -t logs sqlsyslogd -p");
};

##########################################

# Here's the filter options. With this rules, we can set which
# message go where.

filter f_attack_alert {
match("attackalert");
};

filter f_ssh_login_attempt {
program("sshd.*")
and match("(Failed|Accepted)")
and not match("Accepted (hostbased|publickey) for (root|zoneaxfr) from (10.4.3.1)");
};

filter f_authpriv { facility(auth, authpriv); };
filter f_syslog { not facility(auth, authpriv) and not facility(mail); };
filter f_cron { facility(cron); };
filter f_daemon { facility(daemon); };
filter f_kern { facility(kern); };
filter f_lpr { facility(lpr); };
filter f_mail { facility(mail); };
filter f_user { facility(user); };
filter f_uucp { facility(cron); };

filter f_news { facility(news); };

filter f_debug { not facility(auth, authpriv, news, mail); };
filter f_messages { level(info .. warn)
and not facility(auth, authpriv, cron, daemon, mail, news); };
filter f_emergency { level(emerg); };

filter f_info { level(info); };
filter f_notice { level(notice); };
filter f_warn { level(warn); };
filter f_crit { level(crit); };
filter f_err { level(err); };

filter f_cnews { level(notice, err, crit) and facility(news); };
filter f_cother { level(debug, info, notice, warn) or facility(daemon, mail); };

###############################################################
#
# log statements actually send logs somewhere, to a file, across the network, etc
#

#log { source(src); filter(f_authpriv); destination(authlog); };
log { source(src); filter(f_authpriv); destination(syslog); };
log { source(src); filter(f_syslog); destination(syslog); };
#log { source(src); filter(f_cron); destination(cron); };
#log { source(src); filter(f_daemon); destination(daemon); };
log { source(src); filter(f_daemon); destination(messages); };
#log { source(src); filter(f_kern); destination(kern); };
log { source(src); filter(f_kern); destination(messages); };
log { source(src); filter(f_lpr); destination(lpr); };
log { source(src); filter(f_mail); destination(mail); };
#log { source(src); filter(f_user); destination(user); };
log { source(src); filter(f_user); destination(messages); };
log { source(src); filter(f_uucp); destination(uucp); };
log { source(src); filter(f_mail); destination(maillog); };
log { source(src); filter(f_mail); filter(f_info); destination(mailinfo); };
log { source(src); filter(f_mail); filter(f_warn); destination(mailwarn); };
log { source(src); filter(f_mail); filter(f_err); destination(mailerr); };
log { source(src); filter(f_news); filter(f_crit); destination(newscrit); };
log { source(src); filter(f_news); filter(f_err); destination(newserr); };
log { source(src); filter(f_news); filter(f_notice); destination(newsnotice); };
#log { source(src); filter(f_debug); destination(debug); };
log { source(src); filter(f_messages); destination(messages); };
log { source(src); filter(f_emergency); destination(console); };

#log { source(src); filter(f_cnews); destination(console_all); };
#log { source(src); filter(f_cother); destination(console_all); };

log { source(src); filter(f_cnews); destination(xconsole); };
log { source(src); filter(f_cother); destination(xconsole); };


# slap it into a MySQL database
log {
source(src);
destination(sqlsyslogd);
};

# find messages with "attackalert" in them, and send to the mail-alert script
log {
source(src);
filter(f_attack_alert);
destination(mail-alert-perl);
};

# find messages reporting attempted ssh logins, and send to the mail-alert script
log {
source(src);
filter(f_ssh_login_attempt);
destination(mail-alert-perl);
};

# send all logs to swatch for (near) real-time alerts
log {
source(src);
destination(swatch);
};


## set up logging to loghost
#destination loghost {
# tcp("10.0.0.1" port(514));
#};

# send everything to loghost, too
#log {
# source(src);
# destination(loghost);
#};

#
# automatic host sorting (usually used on a loghost)
#

# set it up
destination std {
file("/var/log/HOSTS/$HOST/$YEAR/$MONTH/$DAY/$FACILITY_$HOST_$YEAR_$MONTH_$DAY"
owner(root) group(root) perm(0600) dir_perm(0700) create_dirs(yes)
);
};

# log it
log {
source(src);
destination(std);
};

###############################################################

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