Unify rc.firewall and rc.firewall6, and obsolete rc.firewall6
and rc.d/ip6fw. Reviewed by: dougb, jhb MFC after: 1 month
This commit is contained in:
Hajimu UMEMOTO
parent
fd63c04193
commit
2bba0e1a00
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@ -14,6 +14,9 @@
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# The file is partitioned: OLD_FILES first, then OLD_LIBS and OLD_DIRS last.
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#
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# 20091202: unify rc.firewall and rc.firewall6.
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OLD_FILES+=etc/rc.d/ip6fw
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OLD_FILES+=etc/rc.firewall6
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# 20091117: removal of rc.early(8) link
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OLD_FILES+=usr/share/man/man8/rc.early.8.gz
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# 20091027: pselect.3 implemented as syscall
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@ -15,7 +15,7 @@ BIN1= auth.conf \
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inetd.conf libalias.conf login.access login.conf mac.conf motd \
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netconfig network.subr networks newsyslog.conf nsswitch.conf \
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phones profile protocols \
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rc rc.bsdextended rc.firewall rc.firewall6 rc.initdiskless \
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rc rc.bsdextended rc.firewall rc.initdiskless \
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rc.sendmail rc.shutdown \
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rc.subr remote rpc services shells \
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sysctl.conf syslog.conf
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@ -118,7 +118,10 @@ firewall_type="UNKNOWN" # Firewall type (see /etc/rc.firewall)
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firewall_quiet="NO" # Set to YES to suppress rule display
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firewall_logging="NO" # Set to YES to enable events logging
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firewall_flags="" # Flags passed to ipfw when type is a file
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firewall_client_net="192.0.2.0/24" # Network address for "client" firewall.
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firewall_client_net="192.0.2.0/24" # IPv4 Network address for "client"
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# firewall.
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#firewall_client_net_ipv6="2001:db8:2:1::/64" # IPv6 network prefix for
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# "client" firewall.
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firewall_simple_iif="ed1" # Inside network interface for "simple"
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# firewall.
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firewall_simple_inet="192.0.2.16/28" # Inside network address for "simple"
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@ -127,12 +130,22 @@ firewall_simple_oif="ed0" # Outside network interface for "simple"
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# firewall.
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firewall_simple_onet="192.0.2.0/28" # Outside network address for "simple"
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# firewall.
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#firewall_simple_iif_ipv6="ed1" # Inside IPv6 network interface for "simple"
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# firewall.
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#firewall_simple_inet_ipv6="2001:db8:2:800::/56" # Inside IPv6 network prefix
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# for "simple" firewall.
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#firewall_simple_oif_ipv6="ed0" # Outside IPv6 network interface for "simple"
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# firewall.
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#firewall_simple_onet_ipv6="2001:db8:2:0::/56" # Outside IPv6 network prefix
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# for "simple" firewall.
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firewall_myservices="" # List of TCP ports on which this host
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# offers services for "workstation" firewall.
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firewall_allowservices="" # List of IPs which have access to
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# $firewall_myservices for "workstation"
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# firewall.
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firewall_trusted="" # List of IPs which have full access to this
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firewall_trusted="" # List of IPv4s which have full access to this
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# host for "workstation" firewall.
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firewall_trusted_ipv6="" # List of IPv6s which have full access to this
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# host for "workstation" firewall.
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firewall_logdeny="NO" # Set to YES to log default denied incoming
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# packets for "workstation" firewall.
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@ -472,13 +485,6 @@ ipv6_faith_prefix="NO" # Set faith prefix to enable a FAITH
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# faithd(8) setup.
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ipv6_ipv4mapping="NO" # Set to "YES" to enable IPv4 mapped IPv6 addr
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# communication. (like ::ffff:a.b.c.d)
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ipv6_firewall_enable="NO" # Set to YES to enable IPv6 firewall
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# functionality
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ipv6_firewall_script="/etc/rc.firewall6" # Which script to run to set up the IPv6 firewall
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ipv6_firewall_type="UNKNOWN" # IPv6 Firewall type (see /etc/rc.firewall6)
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ipv6_firewall_quiet="NO" # Set to YES to suppress rule display
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ipv6_firewall_logging="NO" # Set to YES to enable events logging
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ipv6_firewall_flags="" # Flags passed to ip6fw when type is a file
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ipv6_ipfilter_rules="/etc/ipf6.rules" # rules definition file for ipfilter,
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# see /usr/src/contrib/ipfilter/rules
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# for examples
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@ -15,7 +15,7 @@ FILES= DAEMON FILESYSTEMS LOGIN NETWORKING SERVERS \
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hcsecd \
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hostapd hostid hostid_save hostname \
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inetd initrandom \
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ip6addrctl ip6fw ipfilter ipfs ipfw ipmon \
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ip6addrctl ipfilter ipfs ipfw ipmon \
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ipnat ipsec ipxrouted \
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jail \
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kadmind kerberos keyserv kldxref kpasswdd \
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@ -1,48 +0,0 @@
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#!/bin/sh
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#
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# $FreeBSD$
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#
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# PROVIDE: ip6fw
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# REQUIRE: routing
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# KEYWORD: nojail
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. /etc/rc.subr
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name="ip6fw"
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rcvar=`set_rcvar ipv6_firewall`
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start_cmd="ip6fw_start"
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stop_cmd="${SYSCTL_W} net.inet6.ip6.fw.enable=0"
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required_modules="ipfw"
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ip6fw_start()
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{
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# Specify default rules file if none provided
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if [ -z "${ipv6_firewall_script}" ]; then
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ipv6_firewall_script=/etc/rc.firewall6
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fi
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# Load rules
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#
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if [ -r "${ipv6_firewall_script}" ]; then
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/bin/sh "${ipv6_firewall_script}"
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echo 'IPv6 Firewall rules loaded.'
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elif [ "`ipfw show 65535`" = "65535 deny ip from any to any" ]; then
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warn 'IPv6 firewall rules have not been loaded. Default' \
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' to DENY all access.'
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fi
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# Enable firewall logging
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#
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if checkyesno ipv6_firewall_logging; then
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echo 'IPv6 Firewall logging=YES'
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sysctl net.inet.ip.fw.verbose=1 >/dev/null
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fi
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# Enable the firewall
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#
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${SYSCTL_W} net.inet6.ip6.fw.enable=1
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}
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load_rc_config $name
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run_rc_command "$1"
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@ -17,6 +17,8 @@ start_precmd="ipfw_prestart"
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stop_cmd="ipfw_stop"
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required_modules="ipfw"
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set_rcvar_obsolete ipv6_firewall_enable
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ipfw_prestart()
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{
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if checkyesno dummynet_enable; then
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@ -61,7 +63,13 @@ ipfw_start()
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# Enable the firewall
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#
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if ! ${SYSCTL_W} net.inet.ip.fw.enable=1 1>/dev/null 2>&1; then
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warn "failed to enable firewall"
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warn "failed to enable IPv4 firewall"
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fi
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if afexists inet6; then
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if ! ${SYSCTL_W} net.inet6.ip6.fw.enable=1 1>/dev/null 2>&1
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then
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warn "failed to enable IPv6 firewall"
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fi
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fi
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}
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@ -70,6 +78,9 @@ ipfw_stop()
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# Disable the firewall
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#
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${SYSCTL_W} net.inet.ip.fw.enable=0
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if afexists inet6; then
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${SYSCTL_W} net.inet6.ip6.fw.enable=0
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fi
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if [ -f /etc/rc.d/natd ] ; then
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/etc/rc.d/natd quietstop
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fi
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156
etc/rc.firewall
156
etc/rc.firewall
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@ -85,12 +85,42 @@ setup_loopback () {
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${fwcmd} add 100 pass all from any to any via lo0
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${fwcmd} add 200 deny all from any to 127.0.0.0/8
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${fwcmd} add 300 deny ip from 127.0.0.0/8 to any
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if [ $ipv6_available -eq 0 ]; then
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${fwcmd} add 400 deny all from any to ::1
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${fwcmd} add 500 deny all from ::1 to any
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fi
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}
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setup_ipv6_mandatory () {
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[ $ipv6_available -eq 0 ] || return 0
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############
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# Only in rare cases do you want to change these rules
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#
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# ND
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#
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# DAD
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${fwcmd} add pass ipv6-icmp from :: to ff02::/16
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# RS, RA, NS, NA, redirect...
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${fwcmd} add pass ipv6-icmp from fe80::/10 to fe80::/10
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${fwcmd} add pass ipv6-icmp from fe80::/10 to ff02::/16
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# Allow ICMPv6 destination unreach
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${fwcmd} add pass ipv6-icmp from any to any icmp6types 1
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# Allow NS/NA/toobig (don't filter it out)
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${fwcmd} add pass ipv6-icmp from any to any icmp6types 2,135,136
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}
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if [ -n "${1}" ]; then
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firewall_type="${1}"
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fi
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. /etc/rc.subr
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. /etc/network.subr
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afexists inet6
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ipv6_available=$?
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############
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# Set quiet mode if requested
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#
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@ -109,6 +139,7 @@ esac
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${fwcmd} -f flush
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setup_loopback
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setup_ipv6_mandatory
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############
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# Network Address Translation. All packets are passed to natd(8)
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@ -166,11 +197,13 @@ case ${firewall_type} in
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# against people from outside your own network.
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#
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# Configuration:
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# firewall_client_net: Network address of local network.
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# firewall_client_net: Network address of local IPv4 network.
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# firewall_client_net_ipv6: Network address of local IPv6 network.
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############
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# set this to your local network
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net="$firewall_client_net"
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net6="$firewall_client_net_ipv6"
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# Allow limited broadcast traffic from my own net.
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${fwcmd} add pass all from ${net} to 255.255.255.255
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@ -178,6 +211,16 @@ case ${firewall_type} in
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# Allow any traffic to or from my own net.
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${fwcmd} add pass all from me to ${net}
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${fwcmd} add pass all from ${net} to me
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if [ -n "$net6" ]; then
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${fwcmd} add pass all from me6 to ${net6}
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${fwcmd} add pass all from ${net6} to me6
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fi
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if [ -n "$net6" ]; then
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# Allow any link-local multicast traffic
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${fwcmd} add pass all from fe80::/10 to ff02::/16
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${fwcmd} add pass all from ${net6} to ff02::/16
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fi
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# Allow TCP through if setup succeeded
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${fwcmd} add pass tcp from any to any established
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@ -212,23 +255,38 @@ case ${firewall_type} in
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# on the inside at this machine for those services.
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#
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# Configuration:
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# firewall_simple_iif: Inside network interface.
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# firewall_simple_inet: Inside network address.
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# firewall_simple_oif: Outside network interface.
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# firewall_simple_onet: Outside network address.
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# firewall_simple_iif: Inside IPv4 network interface.
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# firewall_simple_inet: Inside IPv4 network address.
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# firewall_simple_oif: Outside IPv4 network interface.
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# firewall_simple_onet: Outside IPv4 network address.
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# firewall_simple_iif_ipv6: Inside IPv6 network interface.
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# firewall_simple_inet_ipv6: Inside IPv6 network prefix.
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# firewall_simple_oif_ipv6: Outside IPv6 network interface.
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# firewall_simple_onet_ipv6: Outside IPv6 network prefix.
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############
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# set these to your outside interface network
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oif="$firewall_simple_oif"
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onet="$firewall_simple_onet"
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oif6="${firewall_simple_oif_ipv6:-$firewall_simple_oif}"
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onet6="$firewall_simple_onet_ipv6"
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# set these to your inside interface network
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iif="$firewall_simple_iif"
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inet="$firewall_simple_inet"
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iif6="${firewall_simple_iif_ipv6:-$firewall_simple_iif}"
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inet6="$firewall_simple_inet_ipv6"
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# Stop spoofing
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${fwcmd} add deny all from ${inet} to any in via ${oif}
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${fwcmd} add deny all from ${onet} to any in via ${iif}
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if [ -n "$inet6" ]; then
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${fwcmd} add deny all from ${inet6} to any in via ${oif6}
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if [ -n "$onet6" ]; then
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${fwcmd} add deny all from ${onet6} to any in \
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via ${iif6}
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fi
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fi
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# Stop RFC1918 nets on the outside interface
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${fwcmd} add deny all from any to 10.0.0.0/8 via ${oif}
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@ -254,7 +312,7 @@ case ${firewall_type} in
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case ${natd_enable} in
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[Yy][Ee][Ss])
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if [ -n "${natd_interface}" ]; then
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${fwcmd} add divert natd all from any to any via ${natd_interface}
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${fwcmd} add divert natd ip4 from any to any via ${natd_interface}
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fi
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;;
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esac
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@ -273,6 +331,55 @@ case ${firewall_type} in
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${fwcmd} add deny all from 224.0.0.0/4 to any via ${oif}
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${fwcmd} add deny all from 240.0.0.0/4 to any via ${oif}
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if [ -n "$inet6" ]; then
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# Stop unique local unicast address on the outside interface
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${fwcmd} add deny all from fc00::/7 to any via ${oif6}
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${fwcmd} add deny all from any to fc00::/7 via ${oif6}
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# Stop site-local on the outside interface
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${fwcmd} add deny all from fec0::/10 to any via ${oif6}
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${fwcmd} add deny all from any to fec0::/10 via ${oif6}
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# Disallow "internal" addresses to appear on the wire.
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${fwcmd} add deny all from ::ffff:0.0.0.0/96 to any \
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via ${oif6}
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${fwcmd} add deny all from any to ::ffff:0.0.0.0/96 \
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via ${oif6}
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# Disallow packets to malicious IPv4 compatible prefix.
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${fwcmd} add deny all from ::224.0.0.0/100 to any via ${oif6}
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${fwcmd} add deny all from any to ::224.0.0.0/100 via ${oif6}
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${fwcmd} add deny all from ::127.0.0.0/104 to any via ${oif6}
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${fwcmd} add deny all from any to ::127.0.0.0/104 via ${oif6}
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${fwcmd} add deny all from ::0.0.0.0/104 to any via ${oif6}
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${fwcmd} add deny all from any to ::0.0.0.0/104 via ${oif6}
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${fwcmd} add deny all from ::255.0.0.0/104 to any via ${oif6}
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${fwcmd} add deny all from any to ::255.0.0.0/104 via ${oif6}
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${fwcmd} add deny all from ::0.0.0.0/96 to any via ${oif6}
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${fwcmd} add deny all from any to ::0.0.0.0/96 via ${oif6}
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# Disallow packets to malicious 6to4 prefix.
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${fwcmd} add deny all from 2002:e000::/20 to any via ${oif6}
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${fwcmd} add deny all from any to 2002:e000::/20 via ${oif6}
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${fwcmd} add deny all from 2002:7f00::/24 to any via ${oif6}
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${fwcmd} add deny all from any to 2002:7f00::/24 via ${oif6}
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${fwcmd} add deny all from 2002:0000::/24 to any via ${oif6}
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${fwcmd} add deny all from any to 2002:0000::/24 via ${oif6}
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${fwcmd} add deny all from 2002:ff00::/24 to any via ${oif6}
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${fwcmd} add deny all from any to 2002:ff00::/24 via ${oif6}
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${fwcmd} add deny all from 2002:0a00::/24 to any via ${oif6}
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${fwcmd} add deny all from any to 2002:0a00::/24 via ${oif6}
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${fwcmd} add deny all from 2002:ac10::/28 to any via ${oif6}
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${fwcmd} add deny all from any to 2002:ac10::/28 via ${oif6}
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${fwcmd} add deny all from 2002:c0a8::/32 to any via ${oif6}
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${fwcmd} add deny all from any to 2002:c0a8::/32 via ${oif6}
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${fwcmd} add deny all from ff05::/16 to any via ${oif6}
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${fwcmd} add deny all from any to ff05::/16 via ${oif6}
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fi
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# Allow TCP through if setup succeeded
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${fwcmd} add pass tcp from any to any established
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@ -291,7 +398,11 @@ case ${firewall_type} in
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${fwcmd} add pass tcp from any to me 80 setup
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# Reject&Log all setup of incoming connections from the outside
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${fwcmd} add deny log tcp from any to any in via ${oif} setup
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${fwcmd} add deny log ip4 from any to any in via ${oif} setup proto tcp
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if [ -n "$inet6" ]; then
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${fwcmd} add deny log ip6 from any to any in via ${oif6} \
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setup proto tcp
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fi
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# Allow setup of any other TCP connection
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${fwcmd} add pass tcp from any to any setup
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@ -313,7 +424,7 @@ case ${firewall_type} in
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# offers services.
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# firewall_allowservices: List of IPs which has access to
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# $firewall_myservices.
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# firewall_trusted: List of IPs which has full access
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# firewall_trusted: List of IPv4s which has full access
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# to this host. Be very carefull
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# when setting this. This option can
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# seriously degrade the level of
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@ -324,25 +435,44 @@ case ${firewall_type} in
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# firewall_nologports: List of TCP/UDP ports for which
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# denied incomming packets are not
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# logged.
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# firewall_trusted_ipv6: List of IPv6s which has full access
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# to this host. Be very carefull
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# when setting this. This option can
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# seriously degrade the level of
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# protection provided by the firewall.
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# Allow packets for which a state has been built.
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${fwcmd} add check-state
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# For services permitted below.
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${fwcmd} add pass tcp from me to any established
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if [ $ipv6_available -eq 0 ]; then
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${fwcmd} add pass tcp from me6 to any established
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fi
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|
||||
# Allow any connection out, adding state for each.
|
||||
${fwcmd} add pass tcp from me to any setup keep-state
|
||||
${fwcmd} add pass udp from me to any keep-state
|
||||
${fwcmd} add pass icmp from me to any keep-state
|
||||
if [ $ipv6_available -eq 0 ]; then
|
||||
${fwcmd} add pass tcp from me6 to any setup keep-state
|
||||
${fwcmd} add pass udp from me6 to any keep-state
|
||||
${fwcmd} add pass ipv6-icmp from me6 to any keep-state
|
||||
fi
|
||||
|
||||
# Allow DHCP.
|
||||
${fwcmd} add pass udp from 0.0.0.0 68 to 255.255.255.255 67 out
|
||||
${fwcmd} add pass udp from any 67 to me 68 in
|
||||
${fwcmd} add pass udp from any 67 to 255.255.255.255 68 in
|
||||
if [ $ipv6_available -eq 0 ]; then
|
||||
${fwcmd} add pass udp from fe80::/10 to me6 546 in
|
||||
fi
|
||||
# Some servers will ping the IP while trying to decide if it's
|
||||
# still in use.
|
||||
${fwcmd} add pass icmp from any to any icmptype 8
|
||||
if [ $ipv6_available -eq 0 ]; then
|
||||
${fwcmd} add pass ipv6-icmp from any to any icmp6type 128,129
|
||||
fi
|
||||
|
||||
# Allow "mandatory" ICMP in.
|
||||
${fwcmd} add pass icmp from any to any icmptype 3,4,11
|
||||
|
|
@ -361,6 +491,9 @@ case ${firewall_type} in
|
|||
for i in ${firewall_allowservices} ; do
|
||||
for j in ${firewall_myservices} ; do
|
||||
${fwcmd} add pass tcp from $i to me $j
|
||||
if [ $ipv6_available -eq 0 ]; then
|
||||
${fwcmd} add pass tcp from $i to me6 $j
|
||||
fi
|
||||
done
|
||||
done
|
||||
|
||||
|
|
@ -370,7 +503,10 @@ case ${firewall_type} in
|
|||
for i in ${firewall_trusted} ; do
|
||||
${fwcmd} add pass ip from $i to me
|
||||
done
|
||||
|
||||
for i in ${firewall_trusted_ipv6} ; do
|
||||
${fwcmd} add pass all from $i to me6
|
||||
done
|
||||
|
||||
${fwcmd} add 65000 count ip from any to any
|
||||
|
||||
# Drop packets to ports where we don't want logging
|
||||
|
|
|
|||
295
etc/rc.firewall6
295
etc/rc.firewall6
|
|
@ -1,295 +0,0 @@
|
|||
#!/bin/sh -
|
||||
############
|
||||
# Setup system for IPv6 firewall service.
|
||||
# $FreeBSD$
|
||||
|
||||
# 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
|
||||
|
||||
############
|
||||
# Define the firewall type in /etc/rc.conf. Valid values are:
|
||||
# open - will allow anyone in
|
||||
# client - will try to protect just this machine
|
||||
# simple - will try to protect a whole network
|
||||
# closed - totally disables IP services except via lo0 interface
|
||||
# UNKNOWN - disables the loading of firewall rules.
|
||||
# filename - will load the rules in the given filename (full path required)
|
||||
#
|
||||
# For ``client'' and ``simple'' the entries below should be customized
|
||||
# appropriately.
|
||||
|
||||
############
|
||||
#
|
||||
# If you don't know enough about packet filtering, we suggest that you
|
||||
# take time to read this book:
|
||||
#
|
||||
# Building Internet Firewalls, 2nd Edition
|
||||
# Brent Chapman and Elizabeth Zwicky
|
||||
#
|
||||
# O'Reilly & Associates, Inc
|
||||
# ISBN 1-56592-871-7
|
||||
# http://www.ora.com/
|
||||
# http://www.oreilly.com/catalog/fire2/
|
||||
#
|
||||
# For a more advanced treatment of Internet Security read:
|
||||
#
|
||||
# Firewalls and Internet Security: Repelling the Wily Hacker, 2nd Edition
|
||||
# William R. Cheswick, Steven M. Bellowin, Aviel D. Rubin
|
||||
#
|
||||
# Addison-Wesley / Prentice Hall
|
||||
# ISBN 0-201-63466-X
|
||||
# http://www.pearsonhighered.com/
|
||||
# http://www.pearsonhighered.com/educator/academic/product/0,3110,020163466X,00.html
|
||||
#
|
||||
|
||||
setup_local () {
|
||||
############
|
||||
# Only in rare cases do you want to change these rules
|
||||
#
|
||||
${fw6cmd} add 100 pass ip6 from any to any via lo0
|
||||
${fw6cmd} add 200 deny ip6 from any to ::1
|
||||
${fw6cmd} add 300 deny 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
|
||||
ipv6_firewall_type="${1}"
|
||||
fi
|
||||
|
||||
############
|
||||
# Set quiet mode if requested
|
||||
#
|
||||
case ${ipv6_firewall_quiet} in
|
||||
[Yy][Ee][Ss])
|
||||
fw6cmd="/sbin/ipfw -q"
|
||||
;;
|
||||
*)
|
||||
fw6cmd="/sbin/ipfw"
|
||||
;;
|
||||
esac
|
||||
|
||||
############
|
||||
# Flush out the list before we begin.
|
||||
#
|
||||
${fw6cmd} -f flush
|
||||
|
||||
############
|
||||
# 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 ipv6_firewall_type to ``open''.
|
||||
#
|
||||
# ${fw6cmd} add 65000 pass all from any to any
|
||||
|
||||
|
||||
# Prototype setups.
|
||||
#
|
||||
case ${ipv6_firewall_type} in
|
||||
[Oo][Pp][Ee][Nn])
|
||||
setup_local
|
||||
${fw6cmd} add 65000 pass ip6 from any to any
|
||||
;;
|
||||
|
||||
[Cc][Ll][Ii][Ee][Nn][Tt])
|
||||
############
|
||||
# This is a prototype setup that will protect your system somewhat
|
||||
# against people from outside your own network.
|
||||
############
|
||||
|
||||
# set these to your network and prefixlen and ip
|
||||
#
|
||||
# This needs more work
|
||||
#
|
||||
net="2001:db8:2:1::"
|
||||
prefixlen="64"
|
||||
ip="2001:db8:2:1::1"
|
||||
|
||||
setup_local
|
||||
|
||||
# Allow any traffic to or from my own net.
|
||||
${fw6cmd} add pass ip6 from ${ip} to ${net}/${prefixlen}
|
||||
${fw6cmd} add pass ip6 from ${net}/${prefixlen} to ${ip}
|
||||
|
||||
# Allow any link-local multicast traffic
|
||||
${fw6cmd} add pass ip6 from fe80::/10 to ff02::/16
|
||||
${fw6cmd} add pass ip6 from ${net}/${prefixlen} to ff02::/16
|
||||
|
||||
# Allow TCP through if setup succeeded
|
||||
${fw6cmd} add pass ip6 from any to any established proto tcp
|
||||
|
||||
# Allow IP fragments to pass through
|
||||
${fw6cmd} add pass ip6 from any to any frag
|
||||
|
||||
# Allow setup of incoming email
|
||||
${fw6cmd} add pass ip6 from any to ${ip} 25 setup proto tcp
|
||||
|
||||
# Allow setup of outgoing TCP connections only
|
||||
${fw6cmd} add pass ip6 from ${ip} to any setup proto tcp
|
||||
|
||||
# Disallow setup of all other TCP connections
|
||||
${fw6cmd} add deny ip6 from any to any setup proto tcp
|
||||
|
||||
# Allow DNS queries out in the world
|
||||
${fw6cmd} add pass ip6 from any 53 to ${ip} proto udp
|
||||
${fw6cmd} add pass ip6 from ${ip} to any 53 proto udp
|
||||
|
||||
# Allow NTP queries out in the world
|
||||
${fw6cmd} add pass ip6 from any 123 to ${ip} proto udp
|
||||
${fw6cmd} add pass ip6 from ${ip} to any 123 proto udp
|
||||
|
||||
# Allow ICMPv6 destination unreach
|
||||
${fw6cmd} add pass ip6 from any to any icmp6types 1 proto ipv6-icmp
|
||||
|
||||
# Allow NS/NA/toobig (don't filter it out)
|
||||
${fw6cmd} add pass ip6 from any to any icmp6types 2,135,136 \
|
||||
proto ipv6-icmp
|
||||
|
||||
# Everything else is denied by default, unless the
|
||||
# IPV6FIREWALL_DEFAULT_TO_ACCEPT option is set in your kernel
|
||||
# config file.
|
||||
;;
|
||||
|
||||
[Ss][Ii][Mm][Pp][Ll][Ee])
|
||||
############
|
||||
# This is a prototype setup for a simple firewall. Configure this
|
||||
# machine as a DNS and NTP server, and point all the machines
|
||||
# on the inside at this machine for those services.
|
||||
############
|
||||
|
||||
# set these to your outside interface network and prefixlen and ip
|
||||
oif="ed0"
|
||||
onet="2001:db8:2:1::"
|
||||
oprefixlen="64"
|
||||
oip="2001:db8:2:1::1"
|
||||
|
||||
# set these to your inside interface network and prefixlen and ip
|
||||
iif="ed1"
|
||||
inet="2001:db8:2:2::"
|
||||
iprefixlen="64"
|
||||
iip="2001:db8:2:2::1"
|
||||
|
||||
setup_local
|
||||
|
||||
# Stop spoofing
|
||||
${fw6cmd} add deny ip6 from ${inet}/${iprefixlen} to any in via ${oif}
|
||||
${fw6cmd} add deny ip6 from ${onet}/${oprefixlen} to any in via ${iif}
|
||||
|
||||
# Stop unique local unicast address on the outside interface
|
||||
${fw6cmd} add deny ip6 from fc00::/7 to any via ${oif}
|
||||
${fw6cmd} add deny ip6 from any to fc00::/7 via ${oif}
|
||||
|
||||
# Stop site-local on the outside interface
|
||||
${fw6cmd} add deny ip6 from fec0::/10 to any via ${oif}
|
||||
${fw6cmd} add deny ip6 from any to fec0::/10 via ${oif}
|
||||
|
||||
# Disallow "internal" addresses to appear on the wire.
|
||||
${fw6cmd} add deny ip6 from ::ffff:0.0.0.0/96 to any via ${oif}
|
||||
${fw6cmd} add deny ip6 from any to ::ffff:0.0.0.0/96 via ${oif}
|
||||
|
||||
# Disallow packets to malicious IPv4 compatible prefix.
|
||||
${fw6cmd} add deny ip6 from ::224.0.0.0/100 to any via ${oif}
|
||||
${fw6cmd} add deny ip6 from any to ::224.0.0.0/100 via ${oif}
|
||||
${fw6cmd} add deny ip6 from ::127.0.0.0/104 to any via ${oif}
|
||||
${fw6cmd} add deny ip6 from any to ::127.0.0.0/104 via ${oif}
|
||||
${fw6cmd} add deny ip6 from ::0.0.0.0/104 to any via ${oif}
|
||||
${fw6cmd} add deny ip6 from any to ::0.0.0.0/104 via ${oif}
|
||||
${fw6cmd} add deny ip6 from ::255.0.0.0/104 to any via ${oif}
|
||||
${fw6cmd} add deny ip6 from any to ::255.0.0.0/104 via ${oif}
|
||||
|
||||
${fw6cmd} add deny ip6 from ::0.0.0.0/96 to any via ${oif}
|
||||
${fw6cmd} add deny ip6 from any to ::0.0.0.0/96 via ${oif}
|
||||
|
||||
# Disallow packets to malicious 6to4 prefix.
|
||||
${fw6cmd} add deny ip6 from 2002:e000::/20 to any via ${oif}
|
||||
${fw6cmd} add deny ip6 from any to 2002:e000::/20 via ${oif}
|
||||
${fw6cmd} add deny ip6 from 2002:7f00::/24 to any via ${oif}
|
||||
${fw6cmd} add deny ip6 from any to 2002:7f00::/24 via ${oif}
|
||||
${fw6cmd} add deny ip6 from 2002:0000::/24 to any via ${oif}
|
||||
${fw6cmd} add deny ip6 from any to 2002:0000::/24 via ${oif}
|
||||
${fw6cmd} add deny ip6 from 2002:ff00::/24 to any via ${oif}
|
||||
${fw6cmd} add deny ip6 from any to 2002:ff00::/24 via ${oif}
|
||||
|
||||
${fw6cmd} add deny ip6 from 2002:0a00::/24 to any via ${oif}
|
||||
${fw6cmd} add deny ip6 from any to 2002:0a00::/24 via ${oif}
|
||||
${fw6cmd} add deny ip6 from 2002:ac10::/28 to any via ${oif}
|
||||
${fw6cmd} add deny ip6 from any to 2002:ac10::/28 via ${oif}
|
||||
${fw6cmd} add deny ip6 from 2002:c0a8::/32 to any via ${oif}
|
||||
${fw6cmd} add deny ip6 from any to 2002:c0a8::/32 via ${oif}
|
||||
|
||||
${fw6cmd} add deny ip6 from ff05::/16 to any via ${oif}
|
||||
${fw6cmd} add deny ip6 from any to ff05::/16 via ${oif}
|
||||
|
||||
# Allow TCP through if setup succeeded
|
||||
${fw6cmd} add pass tcp from any to any established
|
||||
|
||||
# Allow IP fragments to pass through
|
||||
${fw6cmd} add pass ip6 from any to any frag
|
||||
|
||||
# Allow setup of incoming email
|
||||
${fw6cmd} add pass ip6 from any to ${oip} 25 setup proto tcp
|
||||
|
||||
# Allow access to our DNS
|
||||
${fw6cmd} add pass ip6 from any to ${oip} 53 setup proto tcp
|
||||
${fw6cmd} add pass ip6 from any to ${oip} 53 proto udp
|
||||
${fw6cmd} add pass ip6 from ${oip} 53 to any proto udp
|
||||
|
||||
# Allow access to our WWW
|
||||
${fw6cmd} add pass ip6 from any to ${oip} 80 setup proto tcp
|
||||
|
||||
# Reject&Log all setup of incoming connections from the outside
|
||||
${fw6cmd} add deny log ip6 from any to any in via ${oif} setup \
|
||||
proto tcp
|
||||
|
||||
# Allow setup of any other TCP connection
|
||||
${fw6cmd} add pass ip6 from any to any setup proto tcp
|
||||
|
||||
# Allow DNS queries out in the world
|
||||
${fw6cmd} add pass ip6 from any 53 to ${oip} proto udp
|
||||
${fw6cmd} add pass ip6 from ${oip} to any 53 proto udp
|
||||
|
||||
# Allow NTP queries out in the world
|
||||
${fw6cmd} add pass ip6 from any 123 to ${oip} proto udp
|
||||
${fw6cmd} add pass ip6 from ${oip} to any 123 proto udp
|
||||
|
||||
# Allow RIPng
|
||||
#${fw6cmd} add pass ip6 from fe80::/10 521 to ff02::9 521 proto udp
|
||||
#${fw6cmd} add pass ip6 from fe80::/10 521 to fe80::/10 521 proto udp
|
||||
|
||||
# Allow ICMPv6 destination unreach
|
||||
${fw6cmd} add pass ip6 from any to any icmp6types 1 proto ipv6-icmp
|
||||
|
||||
# Allow NS/NA/toobig (don't filter it out)
|
||||
${fw6cmd} add pass ip6 from any to any icmp6types 2,135,136 \
|
||||
proto ipv6-icmp
|
||||
|
||||
# Everything else is denied by default, unless the
|
||||
# IPV6FIREWALL_DEFAULT_TO_ACCEPT option is set in your kernel
|
||||
# config file.
|
||||
;;
|
||||
|
||||
[Cc][Ll][Oo][Ss][Ee][Dd])
|
||||
# Only enable the loopback interface
|
||||
${fw6cmd} add 100 pass ip6 from any to any via lo0
|
||||
;;
|
||||
[Uu][Nn][Kk][Nn][Oo][Ww][Nn])
|
||||
;;
|
||||
*)
|
||||
if [ -r "${ipv6_firewall_type}" ]; then
|
||||
${fw6cmd} ${ipv6_firewall_flags} ${ipv6_firewall_type}
|
||||
fi
|
||||
;;
|
||||
esac
|
||||
Loading…
Reference in New Issue