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diff --git a/files/munin/tor_traffic b/files/munin/tor_traffic
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+#!/usr/bin/perl -w
+#
+# Munin plugin to monitor Tor traffic
+#
+# Author: Ge van Geldorp <ge@gse.nl>
+#
+# Parameters understood:
+#
+# 	host       - Change which host to graph (default localhost)
+# 	port       - Change which port to connect to (default 9051)
+#	password   - Plain-text control channel password (see torrc
+#	             HashedControlPassword parameter)
+#	cookiefile - Name of the file containing the control channel cookie
+#	             (see torrc CookieAuthentication parameter)
+#
+# Using HashedControlPassword authentication has the problem that you must
+# include the plain-text password in the munin config file. To have any
+# effect, that file shouldn't be world-readable.
+# If you're using CookieAuthentication, you should run this plugin as a user
+# which has read access to the tor datafiles. Also note that bugs in versions
+# upto and including 0.1.1.20 prevent CookieAuthentication from working.
+#
+# Usage: place in /etc/munin/node.d/ (or link it there using ln -s)
+#
+# Parameters understood:
+# 	config   (required)
+# 	autoconf (optional - used by munin-config)
+#
+#
+# Magic markers - optional - used by installation scripts and
+# munin-config:
+#
+#%# family=contrib
+#%# capabilities=autoconf
+
+use strict;
+use IO::Socket::INET;
+
+# Config
+our $address = $ENV{host}  || "localhost";	# Default: localhost
+our $port    = $ENV{port}  || 9051;		# Default: 9051
+
+# Don't edit below this line
+
+sub Authenticate
+{
+	my ($socket) = @_;
+	my $authline = "AUTHENTICATE";
+	if (defined($ENV{cookiefile})) {
+		if (open(COOKIE, "<$ENV{cookiefile}")) {
+			binmode COOKIE;
+			my $cookie;
+			$authline .= " ";
+			while (read(COOKIE, $cookie, 32)) {
+				foreach my $byte (unpack "C*", $cookie) {
+					$authline .= sprintf "%02x", $byte;
+				}
+			}
+			close COOKIE;
+		}
+	} elsif (defined($ENV{password})) {
+		$authline .= ' "' . $ENV{password} . '"';
+	}
+	print $socket "$authline\r\n";
+	my $replyline = <$socket>;
+	if (substr($replyline, 0, 1) != '2') {
+		$replyline =~ s/\s*$//;
+		return "Failed to authenticate: $replyline";
+	}
+
+	return;
+}
+
+if ($ARGV[0] and $ARGV[0] eq "autoconf") {
+	# Try to connect to the daemon
+	my $socket = IO::Socket::INET->new("$address:$port")
+		or my $failed = 1;
+
+	if ($failed) {
+		print "no (failed to connect to $address port $port)\n";
+		exit 1;
+	}
+
+	my $msg = Authenticate($socket);
+	if (defined($msg)) {
+		print $socket "QUIT\r\n";
+		close($socket);
+		print "no ($msg)\n";
+		exit 1;
+	}
+
+	print $socket "QUIT\r\n";
+	close($socket);
+	print "yes\n";
+	exit 0;
+}
+
+if ($ARGV[0] and $ARGV[0] eq "config") {
+	print "graph_title Traffic\n";
+	print "graph_vlabel bytes per \${graph_period} read (-) / written (+)\n";
+	print "graph_category Tor\n";
+	print "graph_info This graph shows the bandwidth used by Tor.\n";
+
+	print "read.label byte/s\n";
+	print "read.type GAUGE\n";
+	print "read.graph no\n";
+	print "read.max 10000000\n";
+	print "write.label byte/s\n";
+	print "write.type GAUGE\n";
+	print "write.negative read\n";
+	print "write.max 10000000\n";
+	
+        exit 0;
+}
+
+my $socket = IO::Socket::INET->new("$address:$port")
+	or die("Couldn't connect to $address port $port: $!");
+
+my $msg = Authenticate($socket);
+if (defined($msg)) {
+	print $socket "QUIT\r\n";
+	close($socket);
+	die "$msg\n";
+}
+
+print $socket "SETEVENTS bw\r\n";
+my $replyline = <$socket>;
+if (substr($replyline, 0, 1) != '2') {
+	print $socket "QUIT\r\n";
+	close($socket);
+	$replyline =~ s/\s*$//;
+	die "Failed to get orconn-status info: $replyline\n";
+}
+
+$replyline = <$socket>;
+if (substr($replyline, 0, 1) != '6') {
+	print $socket "QUIT\r\n";
+	close($socket);
+	$replyline =~ s/\s*$//;
+	die "Failed to get bw: $replyline\n";
+}
+my @reply = split(/\s+/, $replyline);
+
+print $socket "SETEVENTS\r\n";
+$replyline = <$socket>;
+print $socket "QUIT\r\n";
+close($socket);
+
+print "read.value $reply[2]\n";
+print "write.value $reply[3]\n";
+
+exit 0;
+
+# vim:syntax=perl