i386/ioapic: Use pmap_mapdev_uncacheable() to map I/O APIC
[dragonfly.git] / etc / rc.firewall6
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1#!/bin/sh
2############
3# Setup system for IPv6 firewall service.
4# $FreeBSD: src/etc/rc.firewall6,v 1.1.2.11 2003/02/10 05:45:06 trhodes Exp $
b615eeec 5# $DragonFly: src/etc/rc.firewall6,v 1.3 2008/08/10 21:29:16 hasso Exp $
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6
7# Suck in the configuration variables.
8if [ -z "${source_rc_confs_defined}" ]; then
9 if [ -r /etc/defaults/rc.conf ]; then
10 . /etc/defaults/rc.conf
11 source_rc_confs
12 elif [ -r /etc/rc.conf ]; then
13 . /etc/rc.conf
14 fi
15fi
16
17############
18# Define the firewall type in /etc/rc.conf. Valid values are:
19# open - will allow anyone in
20# client - will try to protect just this machine
21# simple - will try to protect a whole network
22# closed - totally disables IP services except via lo0 interface
23# UNKNOWN - disables the loading of firewall rules.
24# filename - will load the rules in the given filename (full path required)
25#
26# For ``client'' and ``simple'' the entries below should be customized
27# appropriately.
28
29############
30#
31# If you don't know enough about packet filtering, we suggest that you
32# take time to read this book:
33#
34# Building Internet Firewalls, 2nd Edition
35# Brent Chapman and Elizabeth Zwicky
36#
37# O'Reilly & Associates, Inc
38# ISBN 1-56592-871-7
39# http://www.ora.com/
40# http://www.oreilly.com/catalog/fire2/
41#
42# For a more advanced treatment of Internet Security read:
43#
44# Firewalls & Internet Security
45# Repelling the wily hacker
46# William R. Cheswick, Steven M. Bellowin
47#
48# Addison-Wesley
49# ISBN 0-201-63357-4
50# http://www.awl.com/
51# http://www.awlonline.com/product/0%2C2627%2C0201633574%2C00.html
52#
53
54setup_local () {
55 ############
56 # Only in rare cases do you want to change these rules
57 #
58 ${fw6cmd} add 100 pass all from any to any via lo0
59 #
60 # ND
61 #
62 # DAD
63 ${fw6cmd} add pass ipv6-icmp from :: to ff02::/16
64 # RS, RA, NS, NA, redirect...
65 ${fw6cmd} add pass ipv6-icmp from fe80::/10 to fe80::/10
66 ${fw6cmd} add pass ipv6-icmp from fe80::/10 to ff02::/16
67}
68
69if [ -n "${1}" ]; then
70 ipv6_firewall_type="${1}"
71fi
72
73############
74# Set quiet mode if requested
75#
76case ${ipv6_firewall_quiet} in
77[Yy][Ee][Ss])
78 fw6cmd="/sbin/ip6fw -q"
79 ;;
80*)
81 fw6cmd="/sbin/ip6fw"
82 ;;
83esac
84
85############
86# Flush out the list before we begin.
87#
88${fw6cmd} -f flush
89
90############
91# If you just configured ipfw in the kernel as a tool to solve network
92# problems or you just want to disallow some particular kinds of traffic
93# then you will want to change the default policy to open. You can also
94# do this as your only action by setting the ipv6_firewall_type to ``open''.
95#
96# ${fw6cmd} add 65000 pass all from any to any
97
98
99# Prototype setups.
100#
101case ${ipv6_firewall_type} in
102[Oo][Pp][Ee][Nn])
103 setup_local
104 ${fw6cmd} add 65000 pass all from any to any
105 ;;
106
107[Cc][Ll][Ii][Ee][Nn][Tt])
108 ############
109 # This is a prototype setup that will protect your system somewhat
110 # against people from outside your own network.
111 ############
112
113 # set these to your network and prefixlen and ip
114 #
115 # This needs more work
116 #
b615eeec 117 net="2001:db8:2:1::"
984263bc 118 prefixlen="64"
b615eeec 119 ip="2001:db8:2:1::1"
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120
121 setup_local
122
123 # Allow any traffic to or from my own net.
124 ${fw6cmd} add pass all from ${ip} to ${net}/${prefixlen}
125 ${fw6cmd} add pass all from ${net}/${prefixlen} to ${ip}
126
127 # Allow any link-local multicast traffic
128 ${fw6cmd} add pass all from fe80::/10 to ff02::/16
129 ${fw6cmd} add pass all from ${net}/${prefixlen} to ff02::/16
130
131 # Allow TCP through if setup succeeded
132 ${fw6cmd} add pass tcp from any to any established
133
134 # Allow IP fragments to pass through
135 ${fw6cmd} add pass all from any to any frag
136
137 # Allow setup of incoming email
138 ${fw6cmd} add pass tcp from any to ${ip} 25 setup
139
140 # Allow setup of outgoing TCP connections only
141 ${fw6cmd} add pass tcp from ${ip} to any setup
142
143 # Disallow setup of all other TCP connections
144 ${fw6cmd} add deny tcp from any to any setup
145
146 # Allow DNS queries out in the world
147 ${fw6cmd} add pass udp from any 53 to ${ip}
148 ${fw6cmd} add pass udp from ${ip} to any 53
149
150 # Allow NTP queries out in the world
151 ${fw6cmd} add pass udp from any 123 to ${ip}
152 ${fw6cmd} add pass udp from ${ip} to any 123
153
154 # Allow ICMPv6 destination unreach
155 ${fw6cmd} add pass ipv6-icmp from any to any icmptypes 1
156
157 # Allow NS/NA/toobig (don't filter it out)
158 ${fw6cmd} add pass ipv6-icmp from any to any icmptypes 2,135,136
159
160 # Everything else is denied by default, unless the
161 # IPV6FIREWALL_DEFAULT_TO_ACCEPT option is set in your kernel
162 # config file.
163 ;;
164
165[Ss][Ii][Mm][Pp][Ll][Ee])
166 ############
167 # This is a prototype setup for a simple firewall. Configure this
168 # machine as a named server and ntp server, and point all the machines
169 # on the inside at this machine for those services.
170 ############
171
172 # set these to your outside interface network and prefixlen and ip
173 oif="ed0"
b615eeec 174 onet="2001:db8:2:1::"
984263bc 175 oprefixlen="64"
b615eeec 176 oip="2001:db8:2:1::1"
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177
178 # set these to your inside interface network and prefixlen and ip
179 iif="ed1"
b615eeec 180 inet="2001:db8:2:2::"
984263bc 181 iprefixlen="64"
b615eeec 182 iip="2001:db8:2:2::1"
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183
184 setup_local
185
186 # Stop spoofing
187 ${fw6cmd} add deny all from ${inet}/${iprefixlen} to any in via ${oif}
188 ${fw6cmd} add deny all from ${onet}/${oprefixlen} to any in via ${iif}
189
190 # Stop site-local on the outside interface
191 ${fw6cmd} add deny all from fec0::/10 to any via ${oif}
192 ${fw6cmd} add deny all from any to fec0::/10 via ${oif}
193
194 # Disallow "internal" addresses to appear on the wire.
195 ${fw6cmd} add deny all from ::ffff:0.0.0.0/96 to any via ${oif}
196 ${fw6cmd} add deny all from any to ::ffff:0.0.0.0/96 via ${oif}
197
198 # Disallow packets to malicious IPv4 compatible prefix.
199 ${fw6cmd} add deny all from ::224.0.0.0/100 to any via ${oif}
200 ${fw6cmd} add deny all from any to ::224.0.0.0/100 via ${oif}
201 ${fw6cmd} add deny all from ::127.0.0.0/104 to any via ${oif}
202 ${fw6cmd} add deny all from any to ::127.0.0.0/104 via ${oif}
203 ${fw6cmd} add deny all from ::0.0.0.0/104 to any via ${oif}
204 ${fw6cmd} add deny all from any to ::0.0.0.0/104 via ${oif}
205 ${fw6cmd} add deny all from ::255.0.0.0/104 to any via ${oif}
206 ${fw6cmd} add deny all from any to ::255.0.0.0/104 via ${oif}
207
208 ${fw6cmd} add deny all from ::0.0.0.0/96 to any via ${oif}
209 ${fw6cmd} add deny all from any to ::0.0.0.0/96 via ${oif}
210
211 # Disallow packets to malicious 6to4 prefix.
212 ${fw6cmd} add deny all from 2002:e000::/20 to any via ${oif}
213 ${fw6cmd} add deny all from any to 2002:e000::/20 via ${oif}
214 ${fw6cmd} add deny all from 2002:7f00::/24 to any via ${oif}
215 ${fw6cmd} add deny all from any to 2002:7f00::/24 via ${oif}
216 ${fw6cmd} add deny all from 2002:0000::/24 to any via ${oif}
217 ${fw6cmd} add deny all from any to 2002:0000::/24 via ${oif}
218 ${fw6cmd} add deny all from 2002:ff00::/24 to any via ${oif}
219 ${fw6cmd} add deny all from any to 2002:ff00::/24 via ${oif}
220
221 ${fw6cmd} add deny all from 2002:0a00::/24 to any via ${oif}
222 ${fw6cmd} add deny all from any to 2002:0a00::/24 via ${oif}
223 ${fw6cmd} add deny all from 2002:ac10::/28 to any via ${oif}
224 ${fw6cmd} add deny all from any to 2002:ac10::/28 via ${oif}
225 ${fw6cmd} add deny all from 2002:c0a8::/32 to any via ${oif}
226 ${fw6cmd} add deny all from any to 2002:c0a8::/32 via ${oif}
227
228 ${fw6cmd} add deny all from ff05::/16 to any via ${oif}
229 ${fw6cmd} add deny all from any to ff05::/16 via ${oif}
230
231 # Allow TCP through if setup succeeded
232 ${fw6cmd} add pass tcp from any to any established
233
234 # Allow IP fragments to pass through
235 ${fw6cmd} add pass all from any to any frag
236
237 # Allow setup of incoming email
238 ${fw6cmd} add pass tcp from any to ${oip} 25 setup
239
240 # Allow access to our DNS
241 ${fw6cmd} add pass tcp from any to ${oip} 53 setup
242 ${fw6cmd} add pass udp from any to ${oip} 53
243 ${fw6cmd} add pass udp from ${oip} 53 to any
244
245 # Allow access to our WWW
246 ${fw6cmd} add pass tcp from any to ${oip} 80 setup
247
248 # Reject&Log all setup of incoming connections from the outside
249 ${fw6cmd} add deny log tcp from any to any in via ${oif} setup
250
251 # Allow setup of any other TCP connection
252 ${fw6cmd} add pass tcp from any to any setup
253
254 # Allow DNS queries out in the world
255 ${fw6cmd} add pass udp from any 53 to ${oip}
256 ${fw6cmd} add pass udp from ${oip} to any 53
257
258 # Allow NTP queries out in the world
259 ${fw6cmd} add pass udp from any 123 to ${oip}
260 ${fw6cmd} add pass udp from ${oip} to any 123
261
262 # Allow RIPng
263 #${fw6cmd} add pass udp from fe80::/10 521 to ff02::9 521
264 #${fw6cmd} add pass udp from fe80::/10 521 to fe80::/10 521
265
266 # Allow ICMPv6 destination unreach
267 ${fw6cmd} add pass ipv6-icmp from any to any icmptypes 1
268
269 # Allow NS/NA/toobig (don't filter it out)
270 ${fw6cmd} add pass ipv6-icmp from any to any icmptypes 2,135,136
271
272 # Everything else is denied by default, unless the
273 # IPV6FIREWALL_DEFAULT_TO_ACCEPT option is set in your kernel
274 # config file.
275 ;;
276
277[Cc][Ll][Oo][Ss][Ee][Dd])
278 # Only enable the loopback interface
279 ${fw6cmd} add 100 pass all from any to any via lo0
280 ;;
281[Uu][Nn][Kk][Nn][Oo][Ww][Nn])
282 ;;
283*)
284 if [ -r "${ipv6_firewall_type}" ]; then
285 ${fw6cmd} ${ipv6_firewall_flags} ${ipv6_firewall_type}
286 fi
287 ;;
288esac