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204 lines
6.6 KiB
Bash
204 lines
6.6 KiB
Bash
#!/bin/bash
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# -*- sh -*-
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: <<=cut
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=head1 NAME
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accounting_ - Wildcard-plugin for tcp, udp and icmp traffic-accounting (IPv4 or IPv6) through iptables.
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=head1 CONFIGURATION
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This plugin needs to be run as root for iptables to work.
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[accounting_*]
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user root
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=head2 ENVIRONMENT VARIABLES
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This plugin does not use environment variables.
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=head2 WILDCARD PLUGIN
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This is a wildcard plugin. To monitor traffic going through your iptables,link
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accounting_<ipv4|ipv6>_<accountingname> to this file.
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For example,
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ln -s /opt/munin/lib/plugins/accounting_ /etc/opt/munin/plugins/accounting_ipv4_subnet1
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will monitor the tcp, udp and icmp traffic for the accounting named subnet1.
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=head2 IPTABLES
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You will need to set up iptables rules to create packet counters for
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incoming and outgoing traffic. The examples here cover how to create
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the rules. Add these lines at the top of your firewall-script.
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=head3 Accounting for single ip
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If you want to monitor the traffic from the IP 192.168.0.1, you need to add the following
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lines (replace iptables with ip6tables if needed):
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iptables -I INPUT -d 192.168.0.1 -p icmp -m comment --comment ACCT-accountingname-icmp-in
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iptables -I INPUT -d 192.168.0.1 -p udp -m comment --comment ACCT-accountingname-udp-in
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iptables -I INPUT -d 192.168.0.1 -p tcp -m comment --comment ACCT-accountingname-tcp-in
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iptables -I OUTPUT -s 192.168.0.1 -p icmp -m comment --comment ACCT-accountingname-icmp-out
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iptables -I OUTPUT -s 192.168.0.1 -p udp -m comment --comment ACCT-accountingname-udp-out
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iptables -I OUTPUT -s 192.168.0.1 -p tcp -m comment --comment ACCT-accountingname-tcp-out
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Only the IP itself (192.168.0.1) and the accounting-name (accountingname) need to be replaced by your values.
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iptables -I <INPUT|OUTPUT> -d <yourip> -p <tcp|udp|icmp> -m comment --comment ACCT-<yourname>-<tcp|udp|icmp>-in
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Then add the plugin to your munin configuration:
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ln -s /opt/munin/lib/plugins/accounting_ /etc/opt/munin/plugins/accounting_ipv4_accountingname
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=head3 Accounting for subnets
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If you want to monitor the traffic from the subnet 192.168.0.1/24, you need to add the following
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lines (replace iptables with ip6tables if needed):
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iptables -I INPUT -d 192.168.0.1/24 -p icmp -m comment --comment ACCT-subnet1-icmp-in
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iptables -I INPUT -d 192.168.0.1/24 -p udp -m comment --comment ACCT-subnet1-udp-in
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iptables -I INPUT -d 192.168.0.1/24 -p tcp -m comment --comment ACCT-subnet1-tcp-in
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iptables -I OUTPUT -s 192.168.0.1/24 -p icmp -m comment --comment ACCT-subnet1-icmp-out
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iptables -I OUTPUT -s 192.168.0.1/24 -p udp -m comment --comment ACCT-subnet1-udp-out
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iptables -I OUTPUT -s 192.168.0.1/24 -p tcp -m comment --comment ACCT-subnet1-tcp-out
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Then add the plugin to your munin configuration:
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ln -s /opt/munin/lib/plugins/accounting_ /etc/opt/munin/plugins/accounting_ipv4_subnet1
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=head1 BUGS
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Accounting-names should not contain underline "_" in the name. So instead of "This_Is_A_Cool_Name" use "This-Is-A-Cool-Name".
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=head1 NOTES
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This plugin is based on the ip_ plugin.
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=head1 MAGIC MARKERS
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#%# family=auto
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#%# capabilities=autoconf suggest
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=head1 VERSION
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1.0
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=head1 HISTORY
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2013-06-29: initial release
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=head1 AUTHOR
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Thomas Frey <thomas.frey-munin@hugga.org>
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=head1 LICENSE
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GPLv2
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=cut
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PARAM=${0##*accounting_}
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SUBCHAIN=$(echo $PARAM | cut -d '_' -f 2)
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PROTO=$(echo $PARAM | cut -d '_' -f 1)
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if [ $PROTO = "ipv4" ]; then
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IPTABLES="/sbin/iptables"
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elif [ $PROTO == "ipv6" ]; then
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IPTABLES="/sbin/ip6tables"
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else
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echo "Configuration error: invalid protocol name: not ipv4 or ipv6."
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echo "Use accounting_<ipv4|ipv6>_accountingname."
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exit 1
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fi
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if [ "$1" == "autoconf" ]; then
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if [ -r /proc/net/dev ]; then
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$IPTABLES -L INPUT -v -n -x >/dev/null 2>/dev/null
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if [ $? -gt 0 ]; then
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echo "no (could not run iptables as user `whoami`)"
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exit 1
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else
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echo yes
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exit 0
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fi
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else
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echo "no (/proc/net/dev not found)"
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exit 1
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fi
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fi
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if [ "$1" = "suggest" ]; then
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if [ $PROTO = "ipv4" ]; then
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$IPTABLES -L INPUT -v -x -n 2>/dev/null | sed -n 's/^.*\/\* ACCT\-\([a-zA-Z\-]*\) \*\/.*$/\ipv4_\1/p'
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$IPTABLES -L OUTPUT -v -x -n 2>/dev/null | sed -n 's/^.*\/\* ACCT\-\([a-zA-Z\-]*\) \*\/.*$/\ipv4_\1/p'
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elif [ $PROTO == "ipv6" ]; then
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$IPTABLES -L INPUT -v -x -n 2>/dev/null | sed -n 's/^.*\/\* ACCT\-\([a-zA-Z\-]*\) \*\/.*$/\ipv6_\1/p'
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$IPTABLES -L OUTPUT -v -x -n 2>/dev/null | sed -n 's/^.*\/\* ACCT\-\([a-zA-Z\-]*\) \*\/.*$/\ipv6_\1/p'
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fi
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exit 0
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fi
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if [ "$1" = "config" ]; then
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echo 'multigraph '${0##*/}'_in'
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echo 'graph_title '$SUBCHAIN' traffic incoming ('$PROTO')'
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echo 'graph_args --base 1024 -l 0'
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echo 'graph_vlabel bytes per ${graph_period}'
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echo 'graph_order tcpIN udpIN icmpIN'
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echo 'graph_category network'
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echo 'tcpIN.label tcp received'
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echo 'tcpIN.cdef tcpIN,8,*'
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echo 'tcpIN.type DERIVE'
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echo 'tcpIN.draw AREA'
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echo 'tcpIN.min 0'
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echo 'udpIN.label udp received'
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echo 'udpIN.cdef udpIN,8,*'
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echo 'udpIN.type DERIVE'
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echo 'udpIN.draw STACK'
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echo 'udpIN.min 0'
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echo 'icmpIN.label icmp received'
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echo 'icmpIN.cdef icmpIN,8,*'
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echo 'icmpIN.type DERIVE'
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echo 'icmpIN.draw STACK'
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echo 'icmpIN.min 0'
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echo 'multigraph '${0##*/}'_out'
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echo 'graph_title '$SUBCHAIN' traffic outgoing ('$PROTO')'
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echo 'graph_args --base 1024 -l 0'
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echo 'graph_vlabel bytes per ${graph_period}'
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echo 'graph_order tcpOUT udpOUT icmpOUT'
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echo 'graph_category network'
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echo 'tcpOUT.label tcp sent'
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echo 'tcpOUT.cdef tcpOUT,8,*'
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echo 'tcpOUT.type DERIVE'
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echo 'tcpOUT.draw AREA'
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echo 'tcpOUT.min 0'
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echo 'udpOUT.label udp sent'
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echo 'udpOUT.cdef udpOUT,8,*'
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echo 'udpOUT.type DERIVE'
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echo 'udpOUT.draw STACK'
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echo 'udpOUT.min 0'
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echo 'icmpOUT.label icmp sent'
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echo 'icmpOUT.cdef icmpOUT,8,*'
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echo 'icmpOUT.type DERIVE'
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echo 'icmpOUT.draw STACK'
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echo 'icmpOUT.min 0'
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exit 0
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fi;
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echo 'multigraph '${0##*/}'_in'
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$IPTABLES -L INPUT -v -n -x | grep "\/\* ACCT\-"$SUBCHAIN"\-tcp\-in \*\/" | tr -s '*' '-' | awk "{ print \"tcpIN.value \" \$2 }"
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$IPTABLES -L INPUT -v -n -x | grep "\/\* ACCT\-"$SUBCHAIN"\-udp\-in \*\/" | tr -s '*' '-' | awk "{ print \"udpIN.value \" \$2 }"
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$IPTABLES -L INPUT -v -n -x | grep "\/\* ACCT\-"$SUBCHAIN"\-icmp\-in \*\/" | tr -s '*' '-' | awk "{ print \"icmpIN.value \" \$2 }"
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echo
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echo 'multigraph '${0##*/}'_out'
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$IPTABLES -L OUTPUT -v -n -x | grep "\/\* ACCT\-"$SUBCHAIN"\-tcp\-out \*\/" | tr -s '*' '-' | awk "{ print \"tcpOUT.value \" \$2 }"
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$IPTABLES -L OUTPUT -v -n -x | grep "\/\* ACCT\-"$SUBCHAIN"\-udp\-out \*\/" | tr -s '*' '-' | awk "{ print \"udpOUT.value \" \$2 }"
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$IPTABLES -L OUTPUT -v -n -x | grep "\/\* ACCT\-"$SUBCHAIN"\-icmp\-out \*\/" | tr -s '*' '-' | awk "{ print \"icmpOUT.value \" \$2 }"
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