diff --git a/nagios-templates/check_conntrack_syn.php b/nagios-templates/check_conntrack_syn.php
new file mode 100644
index 0000000..fb4752f
--- /dev/null
+++ b/nagios-templates/check_conntrack_syn.php
@@ -0,0 +1,21 @@
+<?php
+#
+# File:        check_conntrack_syn.php
+# Author:      Pierre Schweitzer <pierre@reactos.org>
+# Created:     27 Jun 2015
+# Licence:     GNU GPL v2 or any later version
+# Purpose:     Template for pnp4nagios & check_syn
+#
+
+$opt[0] = '--title "SYN_SENT connections ratio"';
+$ds_name[0] = "SYN_SENT connections ratio";
+
+$def[0]  = rrd::def("var1", $RRDFILE[1], $DS[2], "AVERAGE");
+$def[0] .= rrd::def("var2", $RRDFILE[2], $DS[1], "AVERAGE");
+
+$def[0] .= rrd::area("var1", "#EA8F00", "Total");
+$def[0] .= rrd::gprint("var1", "AVERAGE", "%3.3lf");
+$def[0] .= rrd::area("var2", "#EACC00", "SYN_SENT") ;
+$def[0] .= rrd::gprint("var2", "AVERAGE", "%3.3lf");
+?>
+