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+# Setting up syslog support
+
+This document will explain how to send syslog data to LibreNMS.
+
+### Syslog server installation
+
+For Debian / Ubuntu:
+```ssh
+apt-get install syslog-ng
+```
+
+For CentOS / RedHat
+```ssh
+yum install syslog-ng
+```
+
+Once syslog-ng is installed, edit the relevant config file (most likely /etc/syslog-ng/syslog-ng.conf) and paste the following:
+
+```ssh
+# First, set some global options.
+options {
+        chain_hostnames(0);
+        flush_lines(0);
+        use_dns(1); # Search name with DNS of the machine
+        use_fqdn(1); # Use all FQDN name of the machine
+        perm(0640);
+        stats_freq(0);
+        keep_hostname(0);
+        log_fifo_size (1000);
+        time_reopen (10);
+        create_dirs (no);
+};
+
+
+source s_sys {
+        system();
+        internal();
+};
+
+
+source s_net {
+        udp(port(514) flags(syslog-protocol));
+        tcp(port(514) flags(syslog-protocol));
+};
+
+
+destination d_librenms {
+        program("/opt/librenms/syslog.php" template ("$HOST||$FACILITY||$PRIORITY||$LEVEL||$TAG||$YEAR-$MONTH-$DAY $HOUR:$MIN:$SEC||$MSG||$PROGRAM\n") template-escape(yes));
+};
+
+
+log {
+        source(s_net);
+        source(s_sys);
+        destination(d_librenms);
+};
+
+
+@include "/etc/syslog-ng/conf.d/"
+```
+
+Next start syslog-ng:
+
+```ssh
+service syslog-ng restart
+```
+
+### Client configuration
+
+Below are sample configurations for a variety of clients. You should understand the config before using it as you may want to make some slight changes.
+
+Replace librenms.ip with IP or hostname of your LibreNMS install.
+
+Replace any variables in <brackets> with the relevant information.
+
+#### syslog
+```config
+*.*     @librenms.ip
+```
+
+#### rsyslog
+```config
+*.* @librenms.ip:514
+```
+
+#### Cisco ASA
+```config
+logging enable
+logging timestamp
+logging buffer-size 200000
+logging buffered debugging
+logging trap notifications
+logging host <outside interface name> librenms.ip
+```
+
+#### Cisco IOS
+```config
+logging trap debugging
+logging facility local6
+logging librenms.ip
+```
+
+#### Cisco NXOS
+```config
+logging server librenms.ip 5 use-vrf default facility local6
+```
+
+If you have permitted udp and tcp 514 through any firewall then that should be all you need. Logs should start appearing and displayed within the LibreNMS web ui.