mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-11-15 14:56:13 +01:00
343 lines
8.0 KiB
Bash
343 lines
8.0 KiB
Bash
#! /bin/sh
|
|
# $FreeBSD$
|
|
|
|
# Note that almost all of the user-configurable behavior is not in this
|
|
# file, but rather in /etc/defaults/rc.conf. Please check that file
|
|
# first before contemplating any changes here. If you do need to change
|
|
# this file for some reason, we would like to know about it.
|
|
|
|
# IPv6 startup
|
|
|
|
network6_pass1() {
|
|
echo -n 'Doing IPv6 network setup:'
|
|
|
|
case ${ipv6_gateway_enable} in
|
|
[Yy][Ee][Ss])
|
|
#
|
|
# list of interfaces, and prefix for interfaces
|
|
#
|
|
case ${ipv6_network_interfaces} in
|
|
[Aa][Uu][Tt][Oo])
|
|
ipv6_network_interfaces="`ifconfig -l`"
|
|
;;
|
|
esac
|
|
;;
|
|
*)
|
|
#
|
|
# manual configurations - in case ip6_gateway_enable=NO
|
|
# you can configure only single interface,
|
|
# as specification assumes that
|
|
# autoconfigured host has single interface only.
|
|
#
|
|
case ${ipv6_network_interfaces} in
|
|
[Aa][Uu][Tt][Oo])
|
|
ipv6_network_interfaces="`ifconfig -l \
|
|
| sed -e 's/ .*//'`"
|
|
;;
|
|
esac
|
|
;;
|
|
esac
|
|
|
|
# just to make sure
|
|
ifconfig lo0 up
|
|
|
|
# disallow "internal" addresses to appear on the wire
|
|
route add -inet6 ::ffff:0.0.0.0 -prefixlen 96 ::1 -reject
|
|
route add -inet6 ::0.0.0.0 -prefixlen 96 ::1 -reject
|
|
|
|
case ${ipv6_gateway_enable} in
|
|
[Yy][Ee][Ss])
|
|
# act as a router
|
|
sysctl -w net.inet6.ip6.forwarding=1
|
|
sysctl -w net.inet6.ip6.accept_rtadv=0
|
|
|
|
# wait for DAD
|
|
for i in $ipv6_network_interfaces; do
|
|
ifconfig $i up
|
|
done
|
|
sleep `sysctl -n net.inet6.ip6.dad_count`
|
|
sleep 1
|
|
|
|
# setting up interfaces
|
|
for i in $ipv6_network_interfaces; do
|
|
eval prefix=\$ipv6_prefix_$i
|
|
case ${prefix} in
|
|
'')
|
|
continue;
|
|
;;
|
|
esac
|
|
for j in ${prefix}; do
|
|
case ${prefixcmd_enable} in
|
|
[Yy][Ee][Ss])
|
|
prefix $i $j::
|
|
;;
|
|
*)
|
|
laddr=`ifconfig $i inet6 \
|
|
| grep 'inet6 fe80:' \
|
|
| head -1 | awk '{print $2}'`
|
|
hostid=`echo ${laddr} | sed \
|
|
-e 's/fe80:[0-9a-fA-F]+::/fe80::/' \
|
|
-e 's/fe80:://' -e 's/%.*//'`
|
|
address=$j\:${hostid}
|
|
|
|
eval hostid_$i=${hostid}
|
|
eval address_$i=${address}
|
|
|
|
ifconfig $i inet6 ${address} \
|
|
prefixlen 64 alias
|
|
;;
|
|
esac
|
|
|
|
# subnet-router anycast address (rfc2373)
|
|
ifconfig $i inet6 $j:: prefixlen 64 \
|
|
alias anycast
|
|
done
|
|
|
|
ifconfig $i inet6
|
|
done
|
|
|
|
# again, wait for DAD's completion (for global addrs)
|
|
sleep `sysctl -n net.inet6.ip6.dad_count`
|
|
sleep 1
|
|
|
|
# Filter out interfaces on which IPv6 addr init failed.
|
|
ipv6_working_interfaces=""
|
|
for i in ${ipv6_network_interfaces}; do
|
|
laddr=`ifconfig $i inet6 2>/dev/null | \
|
|
grep 'inet6 fe80:' | \
|
|
head -1 | grep -v tentative`
|
|
case ${laddr} in
|
|
'')
|
|
;;
|
|
*)
|
|
ipv6_working_interfaces="$i \
|
|
${ipv6_working_interfaces}"
|
|
;;
|
|
esac
|
|
done
|
|
ipv6_network_interfaces=${ipv6_working_interfaces}
|
|
|
|
# gifconfig
|
|
network6_gif_setup
|
|
|
|
# 6to4 setup
|
|
network6_stf_setup
|
|
|
|
# install the "default interface" to kernel, which will be used
|
|
# as the default route when there's no router.
|
|
network6_default_interface_setup
|
|
|
|
# setup static routes
|
|
network6_static_routes_setup
|
|
|
|
# ipv6_router
|
|
case ${ipv6_router_enable} in
|
|
[Yy][Ee][Ss])
|
|
if [ -x ${ipv6_router} ]; then
|
|
echo -n " ${ipv6_router}"
|
|
${ipv6_router} ${ipv6_router_flags}
|
|
fi
|
|
;;
|
|
esac
|
|
|
|
# rtadvd
|
|
# This should enabled with a great care.
|
|
# You may want to fine-tune /etc/rtadvd.conf.
|
|
#
|
|
# And if you wish your rtadvd to receive and process
|
|
# router renumbering messages, specify your Router Renumbering
|
|
# security policy by -P option.
|
|
#
|
|
# See `man 3 ipsec_set_policy` for IPsec policy specification
|
|
# details.
|
|
# (CAUTION: This enables your routers prefix renumbering
|
|
# from another machine, so if you enable this, do it with
|
|
# enough care.)
|
|
#
|
|
case ${rtadvd_enable} in
|
|
[Yy][Ee][Ss])
|
|
# default
|
|
rtadvd_interfaces=`echo ${ipv6_network_interfaces} | \
|
|
sed -e 's/ stf0//'`
|
|
rtadvd ${rtadvd_interfaces}
|
|
#
|
|
# Enable Router Renumbering, unicast case
|
|
# (use correct src/dst addr)
|
|
# rtadvd -P "in ipsec ah/transport/fec0:0:0:1::1-fec0:0:0:10::1/require" \
|
|
# ${ipv6_network_interfaces}
|
|
# Enable Router Renumbering, multicast case
|
|
# (use correct src addr)
|
|
# rtadvd -P "in ipsec ah/transport/ff05::2-fec0:0:0:10::1/require" \
|
|
# ${ipv6_network_interfaces}
|
|
;;
|
|
esac
|
|
|
|
# mroute6d
|
|
case ${mroute6d_enable} in
|
|
[Yy][Ee][Ss])
|
|
if [ -x ${mroute6d_program} ]; then
|
|
echo -n " ${mroute6d_program}"
|
|
${mroute6d_program} ${mroute6d_flags}
|
|
fi
|
|
;;
|
|
esac
|
|
;;
|
|
*)
|
|
# act as endhost - automatically configured
|
|
sysctl -w net.inet6.ip6.forwarding=0
|
|
sysctl -w net.inet6.ip6.accept_rtadv=1
|
|
|
|
ifconfig ${ipv6_network_interfaces} up
|
|
rtsol ${ipv6_network_interfaces}
|
|
|
|
|
|
|
|
# wait for DAD's completion (for global addrs)
|
|
sleep `sysctl -n net.inet6.ip6.dad_count`
|
|
sleep 1
|
|
|
|
# gifconfig
|
|
network6_gif_setup
|
|
|
|
# 6to4 setup
|
|
network6_stf_setup
|
|
|
|
# install the "default interface" to kernel, which will be used
|
|
# as the default route when there's no router.
|
|
# ndp -I ${ipv6_default_interface}
|
|
network6_default_interface_setup
|
|
|
|
# setup static routes
|
|
network6_static_routes_setup
|
|
;;
|
|
esac
|
|
|
|
case ${ipv6_ipv4mapping} in
|
|
[Yy][Ee][Ss])
|
|
echo -n ' IPv4 mapped IPv6 address support=YES'
|
|
sysctl -w net.inet6.ip6.mapped_addr=1 >/dev/null
|
|
;;
|
|
'' | *)
|
|
echo -n ' IPv4 mapped IPv6 address support=NO'
|
|
sysctl -w net.inet6.ip6.mapped_addr=0 >/dev/null
|
|
;;
|
|
esac
|
|
|
|
echo '.'
|
|
|
|
# Let future generations know we made it.
|
|
#
|
|
network6_pass1_done=YES
|
|
}
|
|
|
|
network6_gif_setup() {
|
|
case ${gif_interfaces} in
|
|
[Nn][Oo] | '')
|
|
;;
|
|
*)
|
|
for i in ${gif_interfaces}; do
|
|
eval peers=\$gifconfig_$i
|
|
case ${peers} in
|
|
'')
|
|
continue
|
|
;;
|
|
*)
|
|
gifconfig $i ${peers}
|
|
;;
|
|
esac
|
|
done
|
|
;;
|
|
esac
|
|
}
|
|
|
|
network6_stf_setup() {
|
|
case ${stf_interface_ipv4addr} in
|
|
[Nn][Oo] | '')
|
|
;;
|
|
*)
|
|
# setup outer IPv4 addrs
|
|
gifconfig stf0 ${stf_interface_ipv4addr} 255.255.255.255
|
|
# assign IPv6 addr and interface route for 6to4 interface
|
|
stf_prefixlen=$((16+${stf_interface_ipv4plen:-0}))
|
|
OIFS="$IFS"
|
|
IFS=".$IFS"
|
|
set ${stf_interface_ipv4addr}
|
|
IFS="$OIFS"
|
|
ipv4_in_hexformat=`printf "%x:%x\n" \
|
|
$(($1*256 + $2)) $(($3*256 + $4))`
|
|
case ${stf_interface_ipv6_ifid} in
|
|
[Aa][Uu][Tt][Oo] | '')
|
|
laddr=`ifconfig stf0 inet6 | grep 'inet6 fe80:' \
|
|
| head -1 | awk '{print $2}'`
|
|
stf_interface_ipv6_ifid=`echo ${laddr} | sed \
|
|
-e 's/fe80:[0-9a-fA-F]+::/fe80::/' \
|
|
-e 's/fe80:://' -e 's/%.*//'`
|
|
case ${stf_interface_ipv6_ifid} in
|
|
'')
|
|
stf_interface_ipv6_ifid=0:0:0:1
|
|
;;
|
|
esac
|
|
;;
|
|
esac
|
|
ifconfig stf0 inet6 2002:${ipv4_in_hexformat}:${stf_interface_ipv6_slaid:-0}:${stf_interface_ipv6_ifid} \
|
|
prefixlen ${stf_prefixlen}
|
|
# disallow packets to malicious 6to4 prefix
|
|
route add -inet6 2002:7f00:0000:: -prefixlen 24 ::1 -reject
|
|
route add -inet6 2002:0000:0000:: -prefixlen 48 ::1 -reject
|
|
route add -inet6 2002:ffff:ffff:: -prefixlen 48 ::1 -reject
|
|
;;
|
|
esac
|
|
}
|
|
|
|
network6_static_routes_setup() {
|
|
# Set up any static routes.
|
|
case ${ipv6_static_routes} in
|
|
[Nn][Oo] | '')
|
|
;;
|
|
*)
|
|
for i in ${ipv6_static_routes}; do
|
|
eval ipv6_route_args=\$ipv6_route_${i}
|
|
route add -inet6 ${ipv6_route_args}
|
|
done
|
|
;;
|
|
esac
|
|
}
|
|
|
|
network6_default_interface_setup() {
|
|
# Choose IPv6 default interface if it is not clearly specified.
|
|
case ${ipv6_default_interface} in
|
|
[Nn][Oo] | '')
|
|
for i in ${ipv6_network_interfaces}; do
|
|
laddr=`ifconfig $i inet6 2>/dev/null \
|
|
| grep 'inet6 fe80:' | \
|
|
head -1 | grep -v tentative`
|
|
case ${laddr} in
|
|
'')
|
|
;;
|
|
*)
|
|
ipv6_default_interface=$i
|
|
break
|
|
;;
|
|
esac
|
|
done
|
|
;;
|
|
esac
|
|
|
|
# Disallow unicast packets without outgoing scope identifiers,
|
|
# or route such packets to a "default" interface, if it is specified.
|
|
case ${ipv6_default_interface} in
|
|
[Nn][Oo] | '')
|
|
route add -inet6 fe80:: -prefixlen 10 ::1 -reject
|
|
route add -inet6 ff02:: -prefixlen 16 ::1 -reject
|
|
;;
|
|
*)
|
|
laddr=`ifconfig ${ipv6_default_interface} inet6 \
|
|
| grep 'inet6 fe80:' | head -1 | awk '{print $2}'`
|
|
route add -inet6 fe80:: ${laddr} -prefixlen 10 -interface \
|
|
-cloning
|
|
route add -inet6 ff02:: ${laddr} -prefixlen 16 -interface \
|
|
-cloning
|
|
;;
|
|
esac
|
|
}
|