source: sysconfig/zweat/etc/rc.firewall.local@ 422

#!/bin/sh -

# Copyright (c) 1996  Poul-Henning Kamp

# All rights reserved.

#

# Redistribution and use in source and binary forms, with or without

# modification, are permitted provided that the following conditions

# are met:

# 1. Redistributions of source code must retain the above copyright

#    notice, this list of conditions and the following disclaimer.

# 2. Redistributions in binary form must reproduce the above copyright

#    notice, this list of conditions and the following disclaimer in the

#    documentation and/or other materials provided with the distribution.

#

# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND

# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

# SUCH DAMAGE.

#

# $FreeBSD: src/etc/rc.firewall,v 1.52.2.3.4.1 2009/04/15 03:14:26 kensmith Exp $

#



#

# Setup system for ipfw(4) firewall service.

#



# Suck in the configuration variables.

if [ -z "${source_rc_confs_defined}" ]; then

        if [ -r /etc/defaults/rc.conf ]; then

                . /etc/defaults/rc.conf

                source_rc_confs

        elif [ -r /etc/rc.conf ]; then

                . /etc/rc.conf

        fi

fi



trusted_net="84.106.113.143"



# Deny and (if wanted) log the rest unconditionally.

log="log logamount 500" # The default of 100 is too low.

sysctl net.inet.ip.fw.verbose=1 >/dev/null



setup_loopback () {

    log="log logamount 500"     # The default of 100 is too low.

        ############

        # Only in rare cases do you want to change these rules

        #

        ${fwcmd} add 100 pass all from any to any via lo0

        ${fwcmd} add 200 deny ${log} all from any to 127.0.0.0/8

        #${fwcmd} add 300 deny ${log} ip from 127.0.0.0/8 to any



        ${fw6cmd} add 100 pass ip6 from any to any via lo0

        ${fw6cmd} add 200 deny ${log} ip6 from any to ::1

        ${fw6cmd} add 300 deny ${log} ip6 from ::1 to any

        #

        # ND

        #

        # DAD

        ${fw6cmd} add pass ip6 from :: to ff02::/16 proto ipv6-icmp

        # RS, RA, NS, NA, redirect...

        ${fw6cmd} add pass ip6 from fe80::/10 to fe80::/10 proto ipv6-icmp

        ${fw6cmd} add pass ip6 from fe80::/10 to ff02::/16 proto ipv6-icmp

}



if [ -n "${1}" ]; then

        firewall_type="${1}"

fi



############

# Set quiet mode if requested

#

case ${firewall_quiet} in

[Yy][Ee][Ss])

        fwcmd="/sbin/ipfw -q"

        ;;

*)

        fwcmd="/sbin/ipfw"

        ;;

esac

case ${ipv6_firewall_quiet} in

[Yy][Ee][Ss])

        fw6cmd="/sbin/ipfw -q"

        ;;

*)

        fw6cmd="/sbin/ipfw"

        ;;

esac



############

# Flush out the list before we begin.

${fwcmd} -f flush



setup_loopback



############

# If you just configured ipfw in the kernel as a tool to solve network

# problems or you just want to disallow some particular kinds of traffic

# then you will want to change the default policy to open.  You can also

# do this as your only action by setting the firewall_type to ``open''.

#

# ${fwcmd} add 65000 pass all from any to any







############

# This is a prototype setup based after simple firewall. 

#

# Configuration:

#  firewall_oif:                Outside network interface.

############



# set these to your outside interface network

oif="$firewall_oif"



# Allow jail to reach outside world

${fwcmd} add nat 1 ip from 10.0.0.0/24 to any out via ${oif}

${fwcmd} add nat 1 ip from any to 78.46.85.230 in via ${oif}

${fwcmd} nat 1 config if ${oif}



# Stop RFC1918 nets on the outside interface

${fwcmd} add deny ${log} all from any to 10.0.0.0/8 via ${oif}

${fwcmd} add deny ${log} all from any to 172.16.0.0/12 via ${oif}

${fwcmd} add deny ${log} all from any to 192.168.0.0/16 via ${oif}



# Stop draft-manning-dsua-03.txt (1 May 2000) nets (includes RESERVED-1,

# DHCP auto-configuration, NET-TEST, MULTICAST (class D), and class E)

# on the outside interface

${fwcmd} add deny ${log} all from any to 0.0.0.0/8 via ${oif}

${fwcmd} add deny ${log} all from any to 169.254.0.0/16 via ${oif}

${fwcmd} add deny ${log} all from any to 192.0.2.0/24 via ${oif}

${fwcmd} add deny ${log} all from any to 224.0.0.0/4 via ${oif}

${fwcmd} add deny ${log} all from any to 240.0.0.0/4 via ${oif}



# Stop RFC1918 nets on the outside interface

${fwcmd} add deny ${log} all from 10.0.0.0/8 to any via ${oif}

${fwcmd} add deny ${log} all from 172.16.0.0/12 to any via ${oif}

${fwcmd} add deny ${log} all from 192.168.0.0/16 to any via ${oif}



# Stop draft-manning-dsua-03.txt (1 May 2000) nets (includes RESERVED-1,

# DHCP auto-configuration, NET-TEST, MULTICAST (class D), and class E)

# on the outside interface

${fwcmd} add deny ${log} all from 0.0.0.0/8 to any via ${oif}

${fwcmd} add deny ${log} all from 169.254.0.0/16 to any via ${oif}

${fwcmd} add deny ${log} all from 192.0.2.0/24 to any via ${oif}

${fwcmd} add deny ${log} all from 224.0.0.0/4 to any via ${oif}

${fwcmd} add deny ${log} all from 240.0.0.0/4 to any via ${oif}



# Stop unique local unicast address on the outside interface

${fw6cmd} add deny ${log} ip6 from fc00::/7 to any via ${oif}

${fw6cmd} add deny ${log} ip6 from any to fc00::/7 via ${oif}



# Stop site-local on the outside interface

${fw6cmd} add deny ${log} ip6 from fec0::/10 to any via ${oif}

${fw6cmd} add deny ${log} ip6 from any to fec0::/10 via ${oif}



# Disallow "internal" addresses to appear on the wire.

${fw6cmd} add deny ${log} ip6 from ::ffff:0.0.0.0/96 to any via ${oif}

${fw6cmd} add deny ${log} ip6 from any to ::ffff:0.0.0.0/96 via ${oif}



# Disallow packets to malicious IPv4 compatible prefix.

${fw6cmd} add deny ${log} ip6 from ::224.0.0.0/100 to any via ${oif}

${fw6cmd} add deny ${log} ip6 from any to ::224.0.0.0/100 via ${oif}

${fw6cmd} add deny ${log} ip6 from ::127.0.0.0/104 to any via ${oif}

${fw6cmd} add deny ${log} ip6 from any to ::127.0.0.0/104 via ${oif}

${fw6cmd} add deny ${log} ip6 from ::0.0.0.0/104 to any via ${oif}

${fw6cmd} add deny ${log} ip6 from any to ::0.0.0.0/104 via ${oif}

${fw6cmd} add deny ${log} ip6 from ::255.0.0.0/104 to any via ${oif}

${fw6cmd} add deny ${log} ip6 from any to ::255.0.0.0/104 via ${oif}



${fw6cmd} add deny ${log} ip6 from ::0.0.0.0/96 to any via ${oif}

${fw6cmd} add deny ${log} ip6 from any to ::0.0.0.0/96 via ${oif}



# Disallow packets to malicious 6to4 prefix.

${fw6cmd} add deny ${log} ip6 from 2002:e000::/20 to any via ${oif}

${fw6cmd} add deny ${log} ip6 from any to 2002:e000::/20 via ${oif}

${fw6cmd} add deny ${log} ip6 from 2002:7f00::/24 to any via ${oif}

${fw6cmd} add deny ${log} ip6 from any to 2002:7f00::/24 via ${oif}

${fw6cmd} add deny ${log} ip6 from 2002:0000::/24 to any via ${oif}

${fw6cmd} add deny ${log} ip6 from any to 2002:0000::/24 via ${oif}

${fw6cmd} add deny ${log} ip6 from 2002:ff00::/24 to any via ${oif}

${fw6cmd} add deny ${log} ip6 from any to 2002:ff00::/24 via ${oif}



${fw6cmd} add deny ${log} ip6 from 2002:0a00::/24 to any via ${oif}

${fw6cmd} add deny ${log} ip6 from any to 2002:0a00::/24 via ${oif}

${fw6cmd} add deny ${log} ip6 from 2002:ac10::/28 to any via ${oif}

${fw6cmd} add deny ${log} ip6 from any to 2002:ac10::/28 via ${oif}

${fw6cmd} add deny ${log} ip6 from 2002:c0a8::/32 to any via ${oif}

${fw6cmd} add deny ${log} ip6 from any to 2002:c0a8::/32 via ${oif}



${fw6cmd} add deny ${log} ip6 from ff05::/16 to any via ${oif}

${fw6cmd} add deny ${log} ip6 from any to ff05::/16 via ${oif}



# Allow TCP through if setup succeeded

${fw6cmd} add pass ip6 from any to any established proto tcp

${fwcmd} add pass tcp from any to any established



# Allow any link-local multicast traffic

${fw6cmd} add pass ip6 from fe80::/10 to ff02::/16



# Deployment to production system, thus limited exposure

# ${fwcmd} add pass tcp from 213.125.247.82 to 144.76.7.58 25,80,443

# ${fwcmd} add deny ${log} tcp from any to 144.76.7.58 25,80,443

# ${fw6cmd} add pass tcp from 2001:1af8:febe:0:b6b6:76ff:fe4f:1cd5 to 2a01:4f8:190:8221::4:1 25,80,443

# ${fw6cmd} add pass tcp from 2001:980:488a:1:b6b6:76ff:fe4f:1cd5 to 2a01:4f8:190:8221::4:1 25,80,443

# ${fw6cmd} add deny ${log} tcp from any to 2a01:4f8:190:8221::4:1 25,80,443



# HACK!

${fw6cmd} add pass ip6 from any to any



# Allow IP fragments to pass through

${fwcmd} add pass all from any to any frag

${fw6cmd} add pass ip6 from any to any frag



# Allow ICMP queries to arrive

${fwcmd} add pass icmp from any to any icmptype 0,3,4,8,11

${fw6cmd} add pass ip6 from any to any icmp6types 1,2,3,4,128 proto ipv6-icmp



# Allow NS/ACK/NA/toobig (don't filter it out)

${fw6cmd} add pass ip6 from any to me icmp6types 2,129,135,136 proto ipv6-icmp

${fw6cmd} add pass ip6 from me to any proto ipv6-icmp





# Allow setup of incoming email

${fwcmd} add pass tcp from any to me 25 setup

${fw6cmd} add pass ip6 from any to me 25 setup proto tcp



# Allow setup of incoming email (smtps)

${fwcmd} add pass tcp from any to me 465 setup

${fw6cmd} add pass ip6 from any to me 465 setup proto tcp



# Allow setup of incoming email (submission)

${fwcmd} add pass tcp from any to me 587 setup

${fw6cmd} add pass ip6 from any to me 587 setup proto tcp



# Allow access to our FTP

${fwcmd} add pass tcp from any to me 21 setup

${fw6cmd} add pass ip6 from any to me 21 setup proto tcp



# Allow access to our DNS

${fwcmd} add pass tcp from any to me 53 setup

${fw6cmd} add pass ip6 from any to me 53 setup proto tcp



# Allow access to our Syslog

${fwcmd} add pass udp from any to me 514

${fwcmd} add pass udp from me 514 to any



# Allow access to our DNS (ivp6)

${fwcmd} add pass udp from any to me 53

${fwcmd} add pass udp from me 53 to any

${fw6cmd} add pass ip6 from any to me 53 proto udp

${fw6cmd} add pass ip6 from me 53 to any proto udp



# Allow access to our NTP

${fwcmd} add pass udp from any to me 123

${fwcmd} add pass udp from me 123 to any

${fw6cmd} add pass ip6 from any to me 123 proto udp

${fw6cmd} add pass ip6 from me 123 to any proto udp



# Allow access to our WWW

${fwcmd} add pass tcp from any to me 80 setup

${fw6cmd} add pass ip6 from any to me 80 setup proto tcp

${fwcmd} add pass tcp from any to me 443 setup

${fw6cmd} add pass ip6 from any to me 443 setup proto tcp



# Allow access to our SNMP

${fwcmd} add pass udp from any to me 161

${fwcmd} add pass udp from me 161 to any

${fw6cmd} add pass ip6 from any to me 161 proto udp

${fw6cmd} add pass ip6 from me 161 to any proto udp



# Allow access to our SSH (sshguard operating in 55000 - 55050)

${fwcmd} add 56000 pass tcp from any to me 22 setup

${fw6cmd} add 56001 pass ip6 from any to me 22 setup proto tcp

${fwcmd} add 56002 pass tcp from any to me 1022 setup

${fw6cmd} add 56003 pass ip6 from any to me 1022 setup proto tcp



# Allow access to our IMAP

${fwcmd} add pass tcp from any to me 143 setup

${fw6cmd} add pass ip6 from any to me 143 setup proto tcp



# Allow access to our IMAPS

${fwcmd} add pass tcp from any to me 993 setup

${fw6cmd} add pass ip6 from any to me 993 setup proto tcp



# Allow access to our IPERF

${fwcmd} add pass tcp from any to me 5001 setup

${fw6cmd} add pass ip6 from any to me 5001 setup proto tcp



# Allow access to our DARKSTAT

${fwcmd} add pass tcp from ${trusted_net} to me 667 setup

${fw6cmd} add pass ip6 from ${trusted_net} to me 667 setup proto tcp



# Reject&Log all setup of incoming connections from the outside

${fwcmd} add deny ${log} tcp from any to any in via ${oif} setup



# Allow setup of outgoing connections only

${fwcmd} add pass tcp from me to any setup

${fw6cmd} add pass ip6 from me to any setup proto tcp



# Allow DNS queries out in the world

${fwcmd} add pass udp from me to any 53 keep-state

${fw6cmd} add pass ip6 from me to any 53 proto udp



# Allow NTP queries out in the world

${fwcmd} add pass udp from me to any 123 keep-state

${fw6cmd} add pass ip6 from any 123 to me proto udp

${fw6cmd} add pass ip6 from me to any 123 proto udp



# Everything else is denied by default, unless the

# IPFIREWALL_DEFAULT_TO_ACCEPT option is set in your kernel

# config file.

${fwcmd} add deny ${log} ip from any to any

${fwcmd} add deny ${log} ip6 from any to any