check_snmp_tcpconnection.sh added

misc/check_snmp_tcpconnection.sh

@@ -0,0 +1,48 @@
+#!/bin/sh
+# Copyright 2010, Pall Sigurdsson <palli@opensource.is>
+#
+# This script is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This script is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# About this script
+#
+# This script will check for established TCP connection via SNMP
+
+
+
+
+LOCAL_HOST=$1
+LOCAL_PORT=$2
+COMMUNITY=$3
+REMOTE_HOST=$4
+REMOTE_PORT=$5
+
+if [ -z $REMOTE_HOST ]; then
+	echo "Usage: $0 <local_host> <local_port> <snmp_community> <remote_host>"
+	exit 3
+fi
+
+OUTPUT=`/usr/bin/snmpwalk -v 2c -c $COMMUNITY $LOCAL_HOST TCP-MIB::tcpConnState.$LOCAL_HOST.$LOCAL_PORT.$REMOTE_HOST | grep -q established`
+RESULT=$?
+
+if [ $RESULT -gt 0 ]; then
+	echo "TCP Connection from $REMOTE_HOST to $LOCAL_HOST:$LOCAL_PORT found"
+	echo "command:"
+	echo "/usr/bin/snmpwalk -v 2c -c $COMMUNITY $LOCAL_HOST TCP-MIB::tcpConnState.$LOCAL_HOST.$LOCAL_PORT.$REMOTE_HOST"
+	echo "OUTPUT: "
+	echo "$OUTPUT"
+	exit 1
+fi
+
+echo  "TCP Connection from $REMOTE_HOST to $LOCAL_HOST:$LOCAL_PORT found"
+exit 0