rc.firewall (181762) | rc.firewall (200028) |
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1#!/bin/sh - 2# Copyright (c) 1996 Poul-Henning Kamp 3# All rights reserved. 4# 5# Redistribution and use in source and binary forms, with or without 6# modification, are permitted provided that the following conditions 7# are met: 8# 1. Redistributions of source code must retain the above copyright --- 9 unchanged lines hidden (view full) --- 18# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24# SUCH DAMAGE. 25# | 1#!/bin/sh - 2# Copyright (c) 1996 Poul-Henning Kamp 3# All rights reserved. 4# 5# Redistribution and use in source and binary forms, with or without 6# modification, are permitted provided that the following conditions 7# are met: 8# 1. Redistributions of source code must retain the above copyright --- 9 unchanged lines hidden (view full) --- 18# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24# SUCH DAMAGE. 25# |
26# $FreeBSD: head/etc/rc.firewall 181762 2008-08-15 19:20:59Z jhb $ | 26# $FreeBSD: head/etc/rc.firewall 200028 2009-12-02 15:05:26Z ume $ |
27# 28 29# 30# Setup system for ipfw(4) firewall service. 31# 32 33# Suck in the configuration variables. 34if [ -z "${source_rc_confs_defined}" ]; then --- 45 unchanged lines hidden (view full) --- 80 81setup_loopback () { 82 ############ 83 # Only in rare cases do you want to change these rules 84 # 85 ${fwcmd} add 100 pass all from any to any via lo0 86 ${fwcmd} add 200 deny all from any to 127.0.0.0/8 87 ${fwcmd} add 300 deny ip from 127.0.0.0/8 to any | 27# 28 29# 30# Setup system for ipfw(4) firewall service. 31# 32 33# Suck in the configuration variables. 34if [ -z "${source_rc_confs_defined}" ]; then --- 45 unchanged lines hidden (view full) --- 80 81setup_loopback () { 82 ############ 83 # Only in rare cases do you want to change these rules 84 # 85 ${fwcmd} add 100 pass all from any to any via lo0 86 ${fwcmd} add 200 deny all from any to 127.0.0.0/8 87 ${fwcmd} add 300 deny ip from 127.0.0.0/8 to any |
88 if [ $ipv6_available -eq 0 ]; then 89 ${fwcmd} add 400 deny all from any to ::1 90 ${fwcmd} add 500 deny all from ::1 to any 91 fi |
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88} 89 | 92} 93 |
94setup_ipv6_mandatory () { 95 [ $ipv6_available -eq 0 ] || return 0 96 97 ############ 98 # Only in rare cases do you want to change these rules 99 # 100 # ND 101 # 102 # DAD 103 ${fwcmd} add pass ipv6-icmp from :: to ff02::/16 104 # RS, RA, NS, NA, redirect... 105 ${fwcmd} add pass ipv6-icmp from fe80::/10 to fe80::/10 106 ${fwcmd} add pass ipv6-icmp from fe80::/10 to ff02::/16 107 108 # Allow ICMPv6 destination unreach 109 ${fwcmd} add pass ipv6-icmp from any to any icmp6types 1 110 111 # Allow NS/NA/toobig (don't filter it out) 112 ${fwcmd} add pass ipv6-icmp from any to any icmp6types 2,135,136 113} 114 |
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90if [ -n "${1}" ]; then 91 firewall_type="${1}" 92fi 93 | 115if [ -n "${1}" ]; then 116 firewall_type="${1}" 117fi 118 |
119. /etc/rc.subr 120. /etc/network.subr 121afexists inet6 122ipv6_available=$? 123 |
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94############ 95# Set quiet mode if requested 96# 97case ${firewall_quiet} in 98[Yy][Ee][Ss]) 99 fwcmd="/sbin/ipfw -q" 100 ;; 101*) 102 fwcmd="/sbin/ipfw" 103 ;; 104esac 105 106############ 107# Flush out the list before we begin. 108# 109${fwcmd} -f flush 110 111setup_loopback | 124############ 125# Set quiet mode if requested 126# 127case ${firewall_quiet} in 128[Yy][Ee][Ss]) 129 fwcmd="/sbin/ipfw -q" 130 ;; 131*) 132 fwcmd="/sbin/ipfw" 133 ;; 134esac 135 136############ 137# Flush out the list before we begin. 138# 139${fwcmd} -f flush 140 141setup_loopback |
142setup_ipv6_mandatory |
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112 113############ 114# Network Address Translation. All packets are passed to natd(8) 115# before they encounter your remaining rules. The firewall rules 116# will then be run again on each packet after translation by natd 117# starting at the rule number following the divert rule. 118# 119# For ``simple'' firewall type the divert rule should be put to a --- 41 unchanged lines hidden (view full) --- 161 ;; 162 163[Cc][Ll][Ii][Ee][Nn][Tt]) 164 ############ 165 # This is a prototype setup that will protect your system somewhat 166 # against people from outside your own network. 167 # 168 # Configuration: | 143 144############ 145# Network Address Translation. All packets are passed to natd(8) 146# before they encounter your remaining rules. The firewall rules 147# will then be run again on each packet after translation by natd 148# starting at the rule number following the divert rule. 149# 150# For ``simple'' firewall type the divert rule should be put to a --- 41 unchanged lines hidden (view full) --- 192 ;; 193 194[Cc][Ll][Ii][Ee][Nn][Tt]) 195 ############ 196 # This is a prototype setup that will protect your system somewhat 197 # against people from outside your own network. 198 # 199 # Configuration: |
169 # firewall_client_net: Network address of local network. | 200 # firewall_client_net: Network address of local IPv4 network. 201 # firewall_client_net_ipv6: Network address of local IPv6 network. |
170 ############ 171 172 # set this to your local network 173 net="$firewall_client_net" | 202 ############ 203 204 # set this to your local network 205 net="$firewall_client_net" |
206 net6="$firewall_client_net_ipv6" |
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174 175 # Allow limited broadcast traffic from my own net. 176 ${fwcmd} add pass all from ${net} to 255.255.255.255 177 178 # Allow any traffic to or from my own net. 179 ${fwcmd} add pass all from me to ${net} 180 ${fwcmd} add pass all from ${net} to me | 207 208 # Allow limited broadcast traffic from my own net. 209 ${fwcmd} add pass all from ${net} to 255.255.255.255 210 211 # Allow any traffic to or from my own net. 212 ${fwcmd} add pass all from me to ${net} 213 ${fwcmd} add pass all from ${net} to me |
214 if [ -n "$net6" ]; then 215 ${fwcmd} add pass all from me6 to ${net6} 216 ${fwcmd} add pass all from ${net6} to me6 217 fi |
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181 | 218 |
219 if [ -n "$net6" ]; then 220 # Allow any link-local multicast traffic 221 ${fwcmd} add pass all from fe80::/10 to ff02::/16 222 ${fwcmd} add pass all from ${net6} to ff02::/16 223 fi 224 |
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182 # Allow TCP through if setup succeeded 183 ${fwcmd} add pass tcp from any to any established 184 185 # Allow IP fragments to pass through 186 ${fwcmd} add pass all from any to any frag 187 188 # Allow setup of incoming email 189 ${fwcmd} add pass tcp from any to me 25 setup --- 17 unchanged lines hidden (view full) --- 207 208[Ss][Ii][Mm][Pp][Ll][Ee]) 209 ############ 210 # This is a prototype setup for a simple firewall. Configure this 211 # machine as a DNS and NTP server, and point all the machines 212 # on the inside at this machine for those services. 213 # 214 # Configuration: | 225 # Allow TCP through if setup succeeded 226 ${fwcmd} add pass tcp from any to any established 227 228 # Allow IP fragments to pass through 229 ${fwcmd} add pass all from any to any frag 230 231 # Allow setup of incoming email 232 ${fwcmd} add pass tcp from any to me 25 setup --- 17 unchanged lines hidden (view full) --- 250 251[Ss][Ii][Mm][Pp][Ll][Ee]) 252 ############ 253 # This is a prototype setup for a simple firewall. Configure this 254 # machine as a DNS and NTP server, and point all the machines 255 # on the inside at this machine for those services. 256 # 257 # Configuration: |
215 # firewall_simple_iif: Inside network interface. 216 # firewall_simple_inet: Inside network address. 217 # firewall_simple_oif: Outside network interface. 218 # firewall_simple_onet: Outside network address. | 258 # firewall_simple_iif: Inside IPv4 network interface. 259 # firewall_simple_inet: Inside IPv4 network address. 260 # firewall_simple_oif: Outside IPv4 network interface. 261 # firewall_simple_onet: Outside IPv4 network address. 262 # firewall_simple_iif_ipv6: Inside IPv6 network interface. 263 # firewall_simple_inet_ipv6: Inside IPv6 network prefix. 264 # firewall_simple_oif_ipv6: Outside IPv6 network interface. 265 # firewall_simple_onet_ipv6: Outside IPv6 network prefix. |
219 ############ 220 221 # set these to your outside interface network 222 oif="$firewall_simple_oif" 223 onet="$firewall_simple_onet" | 266 ############ 267 268 # set these to your outside interface network 269 oif="$firewall_simple_oif" 270 onet="$firewall_simple_onet" |
271 oif6="${firewall_simple_oif_ipv6:-$firewall_simple_oif}" 272 onet6="$firewall_simple_onet_ipv6" |
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224 225 # set these to your inside interface network 226 iif="$firewall_simple_iif" 227 inet="$firewall_simple_inet" | 273 274 # set these to your inside interface network 275 iif="$firewall_simple_iif" 276 inet="$firewall_simple_inet" |
277 iif6="${firewall_simple_iif_ipv6:-$firewall_simple_iif}" 278 inet6="$firewall_simple_inet_ipv6" |
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228 229 # Stop spoofing 230 ${fwcmd} add deny all from ${inet} to any in via ${oif} 231 ${fwcmd} add deny all from ${onet} to any in via ${iif} | 279 280 # Stop spoofing 281 ${fwcmd} add deny all from ${inet} to any in via ${oif} 282 ${fwcmd} add deny all from ${onet} to any in via ${iif} |
283 if [ -n "$inet6" ]; then 284 ${fwcmd} add deny all from ${inet6} to any in via ${oif6} 285 if [ -n "$onet6" ]; then 286 ${fwcmd} add deny all from ${onet6} to any in \ 287 via ${iif6} 288 fi 289 fi |
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232 233 # Stop RFC1918 nets on the outside interface 234 ${fwcmd} add deny all from any to 10.0.0.0/8 via ${oif} 235 ${fwcmd} add deny all from any to 172.16.0.0/12 via ${oif} 236 ${fwcmd} add deny all from any to 192.168.0.0/16 via ${oif} 237 238 # Stop draft-manning-dsua-03.txt (1 May 2000) nets (includes RESERVED-1, 239 # DHCP auto-configuration, NET-TEST, MULTICAST (class D), and class E) --- 9 unchanged lines hidden (view full) --- 249 # rules. If for example one of your internal LAN machines had its IP 250 # address set to 192.0.2.1 then an incoming packet for it after being 251 # translated by natd(8) would match the `deny' rule above. Similarly 252 # an outgoing packet originated from it before being translated would 253 # match the `deny' rule below. 254 case ${natd_enable} in 255 [Yy][Ee][Ss]) 256 if [ -n "${natd_interface}" ]; then | 290 291 # Stop RFC1918 nets on the outside interface 292 ${fwcmd} add deny all from any to 10.0.0.0/8 via ${oif} 293 ${fwcmd} add deny all from any to 172.16.0.0/12 via ${oif} 294 ${fwcmd} add deny all from any to 192.168.0.0/16 via ${oif} 295 296 # Stop draft-manning-dsua-03.txt (1 May 2000) nets (includes RESERVED-1, 297 # DHCP auto-configuration, NET-TEST, MULTICAST (class D), and class E) --- 9 unchanged lines hidden (view full) --- 307 # rules. If for example one of your internal LAN machines had its IP 308 # address set to 192.0.2.1 then an incoming packet for it after being 309 # translated by natd(8) would match the `deny' rule above. Similarly 310 # an outgoing packet originated from it before being translated would 311 # match the `deny' rule below. 312 case ${natd_enable} in 313 [Yy][Ee][Ss]) 314 if [ -n "${natd_interface}" ]; then |
257 ${fwcmd} add divert natd all from any to any via ${natd_interface} | 315 ${fwcmd} add divert natd ip4 from any to any via ${natd_interface} |
258 fi 259 ;; 260 esac 261 262 # Stop RFC1918 nets on the outside interface 263 ${fwcmd} add deny all from 10.0.0.0/8 to any via ${oif} 264 ${fwcmd} add deny all from 172.16.0.0/12 to any via ${oif} 265 ${fwcmd} add deny all from 192.168.0.0/16 to any via ${oif} 266 267 # Stop draft-manning-dsua-03.txt (1 May 2000) nets (includes RESERVED-1, 268 # DHCP auto-configuration, NET-TEST, MULTICAST (class D), and class E) 269 # on the outside interface 270 ${fwcmd} add deny all from 0.0.0.0/8 to any via ${oif} 271 ${fwcmd} add deny all from 169.254.0.0/16 to any via ${oif} 272 ${fwcmd} add deny all from 192.0.2.0/24 to any via ${oif} 273 ${fwcmd} add deny all from 224.0.0.0/4 to any via ${oif} 274 ${fwcmd} add deny all from 240.0.0.0/4 to any via ${oif} 275 | 316 fi 317 ;; 318 esac 319 320 # Stop RFC1918 nets on the outside interface 321 ${fwcmd} add deny all from 10.0.0.0/8 to any via ${oif} 322 ${fwcmd} add deny all from 172.16.0.0/12 to any via ${oif} 323 ${fwcmd} add deny all from 192.168.0.0/16 to any via ${oif} 324 325 # Stop draft-manning-dsua-03.txt (1 May 2000) nets (includes RESERVED-1, 326 # DHCP auto-configuration, NET-TEST, MULTICAST (class D), and class E) 327 # on the outside interface 328 ${fwcmd} add deny all from 0.0.0.0/8 to any via ${oif} 329 ${fwcmd} add deny all from 169.254.0.0/16 to any via ${oif} 330 ${fwcmd} add deny all from 192.0.2.0/24 to any via ${oif} 331 ${fwcmd} add deny all from 224.0.0.0/4 to any via ${oif} 332 ${fwcmd} add deny all from 240.0.0.0/4 to any via ${oif} 333 |
334 if [ -n "$inet6" ]; then 335 # Stop unique local unicast address on the outside interface 336 ${fwcmd} add deny all from fc00::/7 to any via ${oif6} 337 ${fwcmd} add deny all from any to fc00::/7 via ${oif6} 338 339 # Stop site-local on the outside interface 340 ${fwcmd} add deny all from fec0::/10 to any via ${oif6} 341 ${fwcmd} add deny all from any to fec0::/10 via ${oif6} 342 343 # Disallow "internal" addresses to appear on the wire. 344 ${fwcmd} add deny all from ::ffff:0.0.0.0/96 to any \ 345 via ${oif6} 346 ${fwcmd} add deny all from any to ::ffff:0.0.0.0/96 \ 347 via ${oif6} 348 349 # Disallow packets to malicious IPv4 compatible prefix. 350 ${fwcmd} add deny all from ::224.0.0.0/100 to any via ${oif6} 351 ${fwcmd} add deny all from any to ::224.0.0.0/100 via ${oif6} 352 ${fwcmd} add deny all from ::127.0.0.0/104 to any via ${oif6} 353 ${fwcmd} add deny all from any to ::127.0.0.0/104 via ${oif6} 354 ${fwcmd} add deny all from ::0.0.0.0/104 to any via ${oif6} 355 ${fwcmd} add deny all from any to ::0.0.0.0/104 via ${oif6} 356 ${fwcmd} add deny all from ::255.0.0.0/104 to any via ${oif6} 357 ${fwcmd} add deny all from any to ::255.0.0.0/104 via ${oif6} 358 359 ${fwcmd} add deny all from ::0.0.0.0/96 to any via ${oif6} 360 ${fwcmd} add deny all from any to ::0.0.0.0/96 via ${oif6} 361 362 # Disallow packets to malicious 6to4 prefix. 363 ${fwcmd} add deny all from 2002:e000::/20 to any via ${oif6} 364 ${fwcmd} add deny all from any to 2002:e000::/20 via ${oif6} 365 ${fwcmd} add deny all from 2002:7f00::/24 to any via ${oif6} 366 ${fwcmd} add deny all from any to 2002:7f00::/24 via ${oif6} 367 ${fwcmd} add deny all from 2002:0000::/24 to any via ${oif6} 368 ${fwcmd} add deny all from any to 2002:0000::/24 via ${oif6} 369 ${fwcmd} add deny all from 2002:ff00::/24 to any via ${oif6} 370 ${fwcmd} add deny all from any to 2002:ff00::/24 via ${oif6} 371 372 ${fwcmd} add deny all from 2002:0a00::/24 to any via ${oif6} 373 ${fwcmd} add deny all from any to 2002:0a00::/24 via ${oif6} 374 ${fwcmd} add deny all from 2002:ac10::/28 to any via ${oif6} 375 ${fwcmd} add deny all from any to 2002:ac10::/28 via ${oif6} 376 ${fwcmd} add deny all from 2002:c0a8::/32 to any via ${oif6} 377 ${fwcmd} add deny all from any to 2002:c0a8::/32 via ${oif6} 378 379 ${fwcmd} add deny all from ff05::/16 to any via ${oif6} 380 ${fwcmd} add deny all from any to ff05::/16 via ${oif6} 381 fi 382 |
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276 # Allow TCP through if setup succeeded 277 ${fwcmd} add pass tcp from any to any established 278 279 # Allow IP fragments to pass through 280 ${fwcmd} add pass all from any to any frag 281 282 # Allow setup of incoming email 283 ${fwcmd} add pass tcp from any to me 25 setup 284 285 # Allow access to our DNS 286 ${fwcmd} add pass tcp from any to me 53 setup 287 ${fwcmd} add pass udp from any to me 53 288 ${fwcmd} add pass udp from me 53 to any 289 290 # Allow access to our WWW 291 ${fwcmd} add pass tcp from any to me 80 setup 292 293 # Reject&Log all setup of incoming connections from the outside | 383 # Allow TCP through if setup succeeded 384 ${fwcmd} add pass tcp from any to any established 385 386 # Allow IP fragments to pass through 387 ${fwcmd} add pass all from any to any frag 388 389 # Allow setup of incoming email 390 ${fwcmd} add pass tcp from any to me 25 setup 391 392 # Allow access to our DNS 393 ${fwcmd} add pass tcp from any to me 53 setup 394 ${fwcmd} add pass udp from any to me 53 395 ${fwcmd} add pass udp from me 53 to any 396 397 # Allow access to our WWW 398 ${fwcmd} add pass tcp from any to me 80 setup 399 400 # Reject&Log all setup of incoming connections from the outside |
294 ${fwcmd} add deny log tcp from any to any in via ${oif} setup | 401 ${fwcmd} add deny log ip4 from any to any in via ${oif} setup proto tcp 402 if [ -n "$inet6" ]; then 403 ${fwcmd} add deny log ip6 from any to any in via ${oif6} \ 404 setup proto tcp 405 fi |
295 296 # Allow setup of any other TCP connection 297 ${fwcmd} add pass tcp from any to any setup 298 299 # Allow DNS queries out in the world 300 ${fwcmd} add pass udp from me to any 53 keep-state 301 302 # Allow NTP queries out in the world --- 5 unchanged lines hidden (view full) --- 308 ;; 309 310[Ww][Oo][Rr][Kk][Ss][Tt][Aa][Tt][Ii][Oo][Nn]) 311 # Configuration: 312 # firewall_myservices: List of TCP ports on which this host 313 # offers services. 314 # firewall_allowservices: List of IPs which has access to 315 # $firewall_myservices. | 406 407 # Allow setup of any other TCP connection 408 ${fwcmd} add pass tcp from any to any setup 409 410 # Allow DNS queries out in the world 411 ${fwcmd} add pass udp from me to any 53 keep-state 412 413 # Allow NTP queries out in the world --- 5 unchanged lines hidden (view full) --- 419 ;; 420 421[Ww][Oo][Rr][Kk][Ss][Tt][Aa][Tt][Ii][Oo][Nn]) 422 # Configuration: 423 # firewall_myservices: List of TCP ports on which this host 424 # offers services. 425 # firewall_allowservices: List of IPs which has access to 426 # $firewall_myservices. |
316 # firewall_trusted: List of IPs which has full access | 427 # firewall_trusted: List of IPv4s which has full access |
317 # to this host. Be very carefull 318 # when setting this. This option can 319 # seriously degrade the level of 320 # protection provided by the firewall. 321 # firewall_logdeny: Boolean (YES/NO) specifying if the 322 # default denied packets should be 323 # logged (in /var/log/security). 324 # firewall_nologports: List of TCP/UDP ports for which 325 # denied incomming packets are not 326 # logged. | 428 # to this host. Be very carefull 429 # when setting this. This option can 430 # seriously degrade the level of 431 # protection provided by the firewall. 432 # firewall_logdeny: Boolean (YES/NO) specifying if the 433 # default denied packets should be 434 # logged (in /var/log/security). 435 # firewall_nologports: List of TCP/UDP ports for which 436 # denied incomming packets are not 437 # logged. |
327 | 438 # firewall_trusted_ipv6: List of IPv6s which has full access 439 # to this host. Be very carefull 440 # when setting this. This option can 441 # seriously degrade the level of 442 # protection provided by the firewall. 443 |
328 # Allow packets for which a state has been built. 329 ${fwcmd} add check-state 330 331 # For services permitted below. 332 ${fwcmd} add pass tcp from me to any established | 444 # Allow packets for which a state has been built. 445 ${fwcmd} add check-state 446 447 # For services permitted below. 448 ${fwcmd} add pass tcp from me to any established |
449 if [ $ipv6_available -eq 0 ]; then 450 ${fwcmd} add pass tcp from me6 to any established 451 fi |
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333 334 # Allow any connection out, adding state for each. 335 ${fwcmd} add pass tcp from me to any setup keep-state 336 ${fwcmd} add pass udp from me to any keep-state 337 ${fwcmd} add pass icmp from me to any keep-state | 452 453 # Allow any connection out, adding state for each. 454 ${fwcmd} add pass tcp from me to any setup keep-state 455 ${fwcmd} add pass udp from me to any keep-state 456 ${fwcmd} add pass icmp from me to any keep-state |
457 if [ $ipv6_available -eq 0 ]; then 458 ${fwcmd} add pass tcp from me6 to any setup keep-state 459 ${fwcmd} add pass udp from me6 to any keep-state 460 ${fwcmd} add pass ipv6-icmp from me6 to any keep-state 461 fi |
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338 339 # Allow DHCP. 340 ${fwcmd} add pass udp from 0.0.0.0 68 to 255.255.255.255 67 out 341 ${fwcmd} add pass udp from any 67 to me 68 in 342 ${fwcmd} add pass udp from any 67 to 255.255.255.255 68 in | 462 463 # Allow DHCP. 464 ${fwcmd} add pass udp from 0.0.0.0 68 to 255.255.255.255 67 out 465 ${fwcmd} add pass udp from any 67 to me 68 in 466 ${fwcmd} add pass udp from any 67 to 255.255.255.255 68 in |
467 if [ $ipv6_available -eq 0 ]; then 468 ${fwcmd} add pass udp from fe80::/10 to me6 546 in 469 fi |
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343 # Some servers will ping the IP while trying to decide if it's 344 # still in use. 345 ${fwcmd} add pass icmp from any to any icmptype 8 | 470 # Some servers will ping the IP while trying to decide if it's 471 # still in use. 472 ${fwcmd} add pass icmp from any to any icmptype 8 |
473 if [ $ipv6_available -eq 0 ]; then 474 ${fwcmd} add pass ipv6-icmp from any to any icmp6type 128,129 475 fi |
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346 347 # Allow "mandatory" ICMP in. 348 ${fwcmd} add pass icmp from any to any icmptype 3,4,11 349 350 # Add permits for this workstations published services below 351 # Only IPs and nets in firewall_allowservices is allowed in. 352 # If you really wish to let anyone use services on your 353 # workstation, then set "firewall_allowservices='any'" in /etc/rc.conf 354 # 355 # Note: We don't use keep-state as that would allow DoS of 356 # our statetable. 357 # You can add 'keep-state' to the lines for slightly 358 # better performance if you fell that DoS of your 359 # workstation won't be a problem. 360 # 361 for i in ${firewall_allowservices} ; do 362 for j in ${firewall_myservices} ; do 363 ${fwcmd} add pass tcp from $i to me $j | 476 477 # Allow "mandatory" ICMP in. 478 ${fwcmd} add pass icmp from any to any icmptype 3,4,11 479 480 # Add permits for this workstations published services below 481 # Only IPs and nets in firewall_allowservices is allowed in. 482 # If you really wish to let anyone use services on your 483 # workstation, then set "firewall_allowservices='any'" in /etc/rc.conf 484 # 485 # Note: We don't use keep-state as that would allow DoS of 486 # our statetable. 487 # You can add 'keep-state' to the lines for slightly 488 # better performance if you fell that DoS of your 489 # workstation won't be a problem. 490 # 491 for i in ${firewall_allowservices} ; do 492 for j in ${firewall_myservices} ; do 493 ${fwcmd} add pass tcp from $i to me $j |
494 if [ $ipv6_available -eq 0 ]; then 495 ${fwcmd} add pass tcp from $i to me6 $j 496 fi |
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364 done 365 done 366 367 # Allow all connections from trusted IPs. 368 # Playing with the content of firewall_trusted could seriously 369 # degrade the level of protection provided by the firewall. 370 for i in ${firewall_trusted} ; do 371 ${fwcmd} add pass ip from $i to me 372 done | 497 done 498 done 499 500 # Allow all connections from trusted IPs. 501 # Playing with the content of firewall_trusted could seriously 502 # degrade the level of protection provided by the firewall. 503 for i in ${firewall_trusted} ; do 504 ${fwcmd} add pass ip from $i to me 505 done |
373 | 506 for i in ${firewall_trusted_ipv6} ; do 507 ${fwcmd} add pass all from $i to me6 508 done 509 |
374 ${fwcmd} add 65000 count ip from any to any 375 376 # Drop packets to ports where we don't want logging 377 for i in ${firewall_nologports} ; do 378 ${fwcmd} add deny { tcp or udp } from any to any $i in 379 done 380 381 # Broadcasts and muticasts --- 31 unchanged lines hidden --- | 510 ${fwcmd} add 65000 count ip from any to any 511 512 # Drop packets to ports where we don't want logging 513 for i in ${firewall_nologports} ; do 514 ${fwcmd} add deny { tcp or udp } from any to any $i in 515 done 516 517 # Broadcasts and muticasts --- 31 unchanged lines hidden --- |