Author: ume
Date: Wed Dec 2 15:05:26 2009
New Revision: 200028
URL: http://svn.freebsd.org/changeset/base/200028
Log:
Unify rc.firewall and rc.firewall6, and obsolete rc.firewall6
and rc.d/ip6fw.
Reviewed by: dougb, jhb
MFC after: 1 month
Deleted:
head/etc/rc.d/ip6fw
head/etc/rc.firewall6
Modified:
head/ObsoleteFiles.inc
head/etc/Makefile
head/etc/defaults/rc.conf
head/etc/rc.d/Makefile
head/etc/rc.d/ipfw
head/etc/rc.firewall
Modified: head/ObsoleteFiles.inc
==============================================================================
--- head/ObsoleteFiles.inc Wed Dec 2 14:32:01 2009 (r200027)
+++ head/ObsoleteFiles.inc Wed Dec 2 15:05:26 2009 (r200028)
@@ -14,6 +14,9 @@
# The file is partitioned: OLD_FILES first, then OLD_LIBS and OLD_DIRS last.
#
+# 20091202: unify rc.firewall and rc.firewall6.
+OLD_FILES+=etc/rc.d/ip6fw
+OLD_FILES+=etc/rc.firewall6
# 20091117: removal of rc.early(8) link
OLD_FILES+=usr/share/man/man8/rc.early.8.gz
# 20091027: pselect.3 implemented as syscall
Modified: head/etc/Makefile
==============================================================================
--- head/etc/Makefile Wed Dec 2 14:32:01 2009 (r200027)
+++ head/etc/Makefile Wed Dec 2 15:05:26 2009 (r200028)
@@ -15,7 +15,7 @@ BIN1= auth.conf \
inetd.conf libalias.conf login.access login.conf mac.conf motd \
netconfig network.subr networks newsyslog.conf nsswitch.conf \
phones profile protocols \
- rc rc.bsdextended rc.firewall rc.firewall6 rc.initdiskless \
+ rc rc.bsdextended rc.firewall rc.initdiskless \
rc.sendmail rc.shutdown \
rc.subr remote rpc services shells \
sysctl.conf syslog.conf
Modified: head/etc/defaults/rc.conf
==============================================================================
--- head/etc/defaults/rc.conf Wed Dec 2 14:32:01 2009 (r200027)
+++ head/etc/defaults/rc.conf Wed Dec 2 15:05:26 2009 (r200028)
@@ -118,7 +118,10 @@ firewall_type="UNKNOWN" # Firewall type
firewall_quiet="NO" # Set to YES to suppress rule display
firewall_logging="NO" # Set to YES to enable events logging
firewall_flags="" # Flags passed to ipfw when type is a file
-firewall_client_net="192.0.2.0/24" # Network address for "client" firewall.
+firewall_client_net="192.0.2.0/24" # IPv4 Network address for "client"
+ # firewall.
+#firewall_client_net_ipv6="2001:db8:2:1::/64" # IPv6 network prefix for
+ # "client" firewall.
firewall_simple_iif="ed1" # Inside network interface for "simple"
# firewall.
firewall_simple_inet="192.0.2.16/28" # Inside network address for "simple"
@@ -127,12 +130,22 @@ firewall_simple_oif="ed0" # Outside netw
# firewall.
firewall_simple_onet="192.0.2.0/28" # Outside network address for "simple"
# firewall.
+#firewall_simple_iif_ipv6="ed1" # Inside IPv6 network interface for
"simple"
+ # firewall.
+#firewall_simple_inet_ipv6="2001:db8:2:800::/56" # Inside IPv6 network prefix
+ # for "simple" firewall.
+#firewall_simple_oif_ipv6="ed0" # Outside IPv6 network interface for
"simple"
+ # firewall.
+#firewall_simple_onet_ipv6="2001:db8:2:0::/56" # Outside IPv6 network prefix
+ # for "simple" firewall.
firewall_myservices="" # List of TCP ports on which this host
# offers services for "workstation" firewall.
firewall_allowservices="" # List of IPs which have access to
# $firewall_myservices for "workstation"
# firewall.
-firewall_trusted="" # List of IPs which have full access to this
+firewall_trusted="" # List of IPv4s which have full access to this
+ # host for "workstation" firewall.
+firewall_trusted_ipv6="" # List of IPv6s which have full access to this
# host for "workstation" firewall.
firewall_logdeny="NO" # Set to YES to log default denied incoming
# packets for "workstation" firewall.
@@ -472,13 +485,6 @@ ipv6_faith_prefix="NO" # Set faith pref
# faithd(8) setup.
ipv6_ipv4mapping="NO" # Set to "YES" to enable IPv4 mapped IPv6 addr
# communication. (like ::ffff:a.b.c.d)
-ipv6_firewall_enable="NO" # Set to YES to enable IPv6 firewall
- # functionality
-ipv6_firewall_script="/etc/rc.firewall6" # Which script to run to set up the
IPv6 firewall
-ipv6_firewall_type="UNKNOWN" # IPv6 Firewall type (see /etc/rc.firewall6)
-ipv6_firewall_quiet="NO" # Set to YES to suppress rule display
-ipv6_firewall_logging="NO" # Set to YES to enable events logging
-ipv6_firewall_flags="" # Flags passed to ip6fw when type is a file
ipv6_ipfilter_rules="/etc/ipf6.rules" # rules definition file for ipfilter,
# see /usr/src/contrib/ipfilter/rules
# for examples
Modified: head/etc/rc.d/Makefile
==============================================================================
--- head/etc/rc.d/Makefile Wed Dec 2 14:32:01 2009 (r200027)
+++ head/etc/rc.d/Makefile Wed Dec 2 15:05:26 2009 (r200028)
@@ -15,7 +15,7 @@ FILES= DAEMON FILESYSTEMS LOGIN NETWORKI
hcsecd \
hostapd hostid hostid_save hostname \
inetd initrandom \
- ip6addrctl ip6fw ipfilter ipfs ipfw ipmon \
+ ip6addrctl ipfilter ipfs ipfw ipmon \
ipnat ipsec ipxrouted \
jail \
kadmind kerberos keyserv kldxref kpasswdd \
Modified: head/etc/rc.d/ipfw
==============================================================================
--- head/etc/rc.d/ipfw Wed Dec 2 14:32:01 2009 (r200027)
+++ head/etc/rc.d/ipfw Wed Dec 2 15:05:26 2009 (r200028)
@@ -17,6 +17,8 @@ start_precmd="ipfw_prestart"
stop_cmd="ipfw_stop"
required_modules="ipfw"
+set_rcvar_obsolete ipv6_firewall_enable
+
ipfw_prestart()
{
if checkyesno dummynet_enable; then
@@ -61,7 +63,13 @@ ipfw_start()
# Enable the firewall
#
if ! ${SYSCTL_W} net.inet.ip.fw.enable=1 1>/dev/null 2>&1; then
- warn "failed to enable firewall"
+ warn "failed to enable IPv4 firewall"
+ fi
+ if afexists inet6; then
+ if ! ${SYSCTL_W} net.inet6.ip6.fw.enable=1 1>/dev/null 2>&1
+ then
+ warn "failed to enable IPv6 firewall"
+ fi
fi
}
@@ -70,6 +78,9 @@ ipfw_stop()
# Disable the firewall
#
${SYSCTL_W} net.inet.ip.fw.enable=0
+ if afexists inet6; then
+ ${SYSCTL_W} net.inet6.ip6.fw.enable=0
+ fi
if [ -f /etc/rc.d/natd ] ; then
/etc/rc.d/natd quietstop
fi
Modified: head/etc/rc.firewall
==============================================================================
--- head/etc/rc.firewall Wed Dec 2 14:32:01 2009 (r200027)
+++ head/etc/rc.firewall Wed Dec 2 15:05:26 2009 (r200028)
@@ -85,12 +85,42 @@ setup_loopback () {
${fwcmd} add 100 pass all from any to any via lo0
${fwcmd} add 200 deny all from any to 127.0.0.0/8
${fwcmd} add 300 deny ip from 127.0.0.0/8 to any
+ if [ $ipv6_available -eq 0 ]; then
+ ${fwcmd} add 400 deny all from any to ::1
+ ${fwcmd} add 500 deny all from ::1 to any
+ fi
+}
+
+setup_ipv6_mandatory () {
+ [ $ipv6_available -eq 0 ] || return 0
+
+ ############
+ # Only in rare cases do you want to change these rules
+ #
+ # ND
+ #
+ # DAD
+ ${fwcmd} add pass ipv6-icmp from :: to ff02::/16
+ # RS, RA, NS, NA, redirect...
+ ${fwcmd} add pass ipv6-icmp from fe80::/10 to fe80::/10
+ ${fwcmd} add pass ipv6-icmp from fe80::/10 to ff02::/16
+
+ # Allow ICMPv6 destination unreach
+ ${fwcmd} add pass ipv6-icmp from any to any icmp6types 1
+
+ # Allow NS/NA/toobig (don't filter it out)
+ ${fwcmd} add pass ipv6-icmp from any to any icmp6types 2,135,136
}
if [ -n "${1}" ]; then
firewall_type="${1}"
fi
+. /etc/rc.subr
+. /etc/network.subr
+afexists inet6
+ipv6_available=$?
+
############
# Set quiet mode if requested
#
@@ -109,6 +139,7 @@ esac
${fwcmd} -f flush
setup_loopback
+setup_ipv6_mandatory
############
# Network Address Translation. All packets are passed to natd(8)
@@ -166,11 +197,13 @@ case ${firewall_type} in
# against people from outside your own network.
#
# Configuration:
- # firewall_client_net: Network address of local network.
+ # firewall_client_net: Network address of local IPv4 network.
+ # firewall_client_net_ipv6: Network address of local IPv6 network.
############
# set this to your local network
net="$firewall_client_net"
+ net6="$firewall_client_net_ipv6"
# Allow limited broadcast traffic from my own net.
${fwcmd} add pass all from ${net} to 255.255.255.255
@@ -178,6 +211,16 @@ case ${firewall_type} in
# Allow any traffic to or from my own net.
${fwcmd} add pass all from me to ${net}
${fwcmd} add pass all from ${net} to me
+ if [ -n "$net6" ]; then
+ ${fwcmd} add pass all from me6 to ${net6}
+ ${fwcmd} add pass all from ${net6} to me6
+ fi
+
+ if [ -n "$net6" ]; then
+ # Allow any link-local multicast traffic
+ ${fwcmd} add pass all from fe80::/10 to ff02::/16
+ ${fwcmd} add pass all from ${net6} to ff02::/16
+ fi
# Allow TCP through if setup succeeded
${fwcmd} add pass tcp from any to any established
@@ -212,23 +255,38 @@ case ${firewall_type} in
# on the inside at this machine for those services.
#
# Configuration:
- # firewall_simple_iif: Inside network interface.
- # firewall_simple_inet: Inside network address.
- # firewall_simple_oif: Outside network interface.
- # firewall_simple_onet: Outside network address.
+ # firewall_simple_iif: Inside IPv4 network interface.
+ # firewall_simple_inet: Inside IPv4 network address.
+ # firewall_simple_oif: Outside IPv4 network interface.
+ # firewall_simple_onet: Outside IPv4 network address.
+ # firewall_simple_iif_ipv6: Inside IPv6 network interface.
+ # firewall_simple_inet_ipv6: Inside IPv6 network prefix.
+ # firewall_simple_oif_ipv6: Outside IPv6 network interface.
+ # firewall_simple_onet_ipv6: Outside IPv6 network prefix.
############
# set these to your outside interface network
oif="$firewall_simple_oif"
onet="$firewall_simple_onet"
+ oif6="${firewall_simple_oif_ipv6:-$firewall_simple_oif}"
+ onet6="$firewall_simple_onet_ipv6"
# set these to your inside interface network
iif="$firewall_simple_iif"
inet="$firewall_simple_inet"
+ iif6="${firewall_simple_iif_ipv6:-$firewall_simple_iif}"
+ inet6="$firewall_simple_inet_ipv6"
# Stop spoofing
${fwcmd} add deny all from ${inet} to any in via ${oif}
${fwcmd} add deny all from ${onet} to any in via ${iif}
+ if [ -n "$inet6" ]; then
+ ${fwcmd} add deny all from ${inet6} to any in via ${oif6}
+ if [ -n "$onet6" ]; then
+ ${fwcmd} add deny all from ${onet6} to any in \
+ via ${iif6}
+ fi
+ fi
# Stop RFC1918 nets on the outside interface
${fwcmd} add deny all from any to 10.0.0.0/8 via ${oif}
@@ -254,7 +312,7 @@ case ${firewall_type} in
case ${natd_enable} in
[Yy][Ee][Ss])
if [ -n "${natd_interface}" ]; then
- ${fwcmd} add divert natd all from any to any via
${natd_interface}
+ ${fwcmd} add divert natd ip4 from any to any via
${natd_interface}
fi
;;
esac
@@ -273,6 +331,55 @@ case ${firewall_type} in
${fwcmd} add deny all from 224.0.0.0/4 to any via ${oif}
${fwcmd} add deny all from 240.0.0.0/4 to any via ${oif}
+ if [ -n "$inet6" ]; then
+ # Stop unique local unicast address on the outside interface
+ ${fwcmd} add deny all from fc00::/7 to any via ${oif6}
+ ${fwcmd} add deny all from any to fc00::/7 via ${oif6}
+
+ # Stop site-local on the outside interface
+ ${fwcmd} add deny all from fec0::/10 to any via ${oif6}
+ ${fwcmd} add deny all from any to fec0::/10 via ${oif6}
+
+ # Disallow "internal" addresses to appear on the wire.
+ ${fwcmd} add deny all from ::ffff:0.0.0.0/96 to any \
+ via ${oif6}
+ ${fwcmd} add deny all from any to ::ffff:0.0.0.0/96 \
+ via ${oif6}
+
+ # Disallow packets to malicious IPv4 compatible prefix.
+ ${fwcmd} add deny all from ::224.0.0.0/100 to any via ${oif6}
+ ${fwcmd} add deny all from any to ::224.0.0.0/100 via ${oif6}
+ ${fwcmd} add deny all from ::127.0.0.0/104 to any via ${oif6}
+ ${fwcmd} add deny all from any to ::127.0.0.0/104 via ${oif6}
+ ${fwcmd} add deny all from ::0.0.0.0/104 to any via ${oif6}
+ ${fwcmd} add deny all from any to ::0.0.0.0/104 via ${oif6}
+ ${fwcmd} add deny all from ::255.0.0.0/104 to any via ${oif6}
+ ${fwcmd} add deny all from any to ::255.0.0.0/104 via ${oif6}
+
+ ${fwcmd} add deny all from ::0.0.0.0/96 to any via ${oif6}
+ ${fwcmd} add deny all from any to ::0.0.0.0/96 via ${oif6}
+
+ # Disallow packets to malicious 6to4 prefix.
+ ${fwcmd} add deny all from 2002:e000::/20 to any via ${oif6}
+ ${fwcmd} add deny all from any to 2002:e000::/20 via ${oif6}
+ ${fwcmd} add deny all from 2002:7f00::/24 to any via ${oif6}
+ ${fwcmd} add deny all from any to 2002:7f00::/24 via ${oif6}
+ ${fwcmd} add deny all from 2002:0000::/24 to any via ${oif6}
+ ${fwcmd} add deny all from any to 2002:0000::/24 via ${oif6}
+ ${fwcmd} add deny all from 2002:ff00::/24 to any via ${oif6}
+ ${fwcmd} add deny all from any to 2002:ff00::/24 via ${oif6}
+
+ ${fwcmd} add deny all from 2002:0a00::/24 to any via ${oif6}
+ ${fwcmd} add deny all from any to 2002:0a00::/24 via ${oif6}
+ ${fwcmd} add deny all from 2002:ac10::/28 to any via ${oif6}
+ ${fwcmd} add deny all from any to 2002:ac10::/28 via ${oif6}
+ ${fwcmd} add deny all from 2002:c0a8::/32 to any via ${oif6}
+ ${fwcmd} add deny all from any to 2002:c0a8::/32 via ${oif6}
+
+ ${fwcmd} add deny all from ff05::/16 to any via ${oif6}
+ ${fwcmd} add deny all from any to ff05::/16 via ${oif6}
+ fi
+
# Allow TCP through if setup succeeded
${fwcmd} add pass tcp from any to any established
@@ -291,7 +398,11 @@ case ${firewall_type} in
${fwcmd} add pass tcp from any to me 80 setup
# Reject&Log all setup of incoming connections from the outside
- ${fwcmd} add deny log tcp from any to any in via ${oif} setup
+ ${fwcmd} add deny log ip4 from any to any in via ${oif} setup proto tcp
+ if [ -n "$inet6" ]; then
+ ${fwcmd} add deny log ip6 from any to any in via ${oif6} \
+ setup proto tcp
+ fi
# Allow setup of any other TCP connection
${fwcmd} add pass tcp from any to any setup
@@ -313,7 +424,7 @@ case ${firewall_type} in
# offers services.
# firewall_allowservices: List of IPs which has access to
# $firewall_myservices.
- # firewall_trusted: List of IPs which has full access
+ # firewall_trusted: List of IPv4s which has full access
# to this host. Be very carefull
# when setting this. This option can
# seriously degrade the level of
@@ -324,25 +435,44 @@ case ${firewall_type} in
# firewall_nologports: List of TCP/UDP ports for which
# denied incomming packets are not
# logged.
-
+ # firewall_trusted_ipv6: List of IPv6s which has full access
+ # to this host. Be very carefull
+ # when setting this. This option can
+ # seriously degrade the level of
+ # protection provided by the firewall.
+
# Allow packets for which a state has been built.
${fwcmd} add check-state
# For services permitted below.
${fwcmd} add pass tcp from me to any established
+ if [ $ipv6_available -eq 0 ]; then
+ ${fwcmd} add pass tcp from me6 to any established
+ fi
# 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
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