Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | # |
| 2 | # IP netfilter configuration |
| 3 | # |
| 4 | |
| 5 | menu "IP: Netfilter Configuration" |
| 6 | depends on INET && NETFILTER |
| 7 | |
Yasuyuki Kozakai | 9fb9cbb | 2005-11-09 16:38:16 -0800 | [diff] [blame] | 8 | config NF_CONNTRACK_IPV4 |
| 9 | tristate "IPv4 support for new connection tracking (EXPERIMENTAL)" |
| 10 | depends on EXPERIMENTAL && NF_CONNTRACK |
| 11 | ---help--- |
| 12 | Connection tracking keeps a record of what packets have passed |
| 13 | through your machine, in order to figure out how they are related |
| 14 | into connections. |
| 15 | |
| 16 | This is IPv4 support on Layer 3 independent connection tracking. |
| 17 | Layer 3 independent connection tracking is experimental scheme |
| 18 | which generalize ip_conntrack to support other layer 3 protocols. |
| 19 | |
| 20 | To compile it as a module, choose M here. If unsure, say N. |
| 21 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | # connection tracking, helpers and protocols |
| 23 | config IP_NF_CONNTRACK |
| 24 | tristate "Connection tracking (required for masq/NAT)" |
| 25 | ---help--- |
| 26 | Connection tracking keeps a record of what packets have passed |
| 27 | through your machine, in order to figure out how they are related |
| 28 | into connections. |
| 29 | |
| 30 | This is required to do Masquerading or other kinds of Network |
| 31 | Address Translation (except for Fast NAT). It can also be used to |
| 32 | enhance packet filtering (see `Connection state match support' |
| 33 | below). |
| 34 | |
| 35 | To compile it as a module, choose M here. If unsure, say N. |
| 36 | |
| 37 | config IP_NF_CT_ACCT |
| 38 | bool "Connection tracking flow accounting" |
| 39 | depends on IP_NF_CONNTRACK |
| 40 | help |
| 41 | If this option is enabled, the connection tracking code will |
| 42 | keep per-flow packet and byte counters. |
| 43 | |
| 44 | Those counters can be used for flow-based accounting or the |
| 45 | `connbytes' match. |
| 46 | |
| 47 | If unsure, say `N'. |
| 48 | |
| 49 | config IP_NF_CONNTRACK_MARK |
| 50 | bool 'Connection mark tracking support' |
Yasuyuki Kozakai | 31c913e | 2005-09-06 15:09:20 -0700 | [diff] [blame] | 51 | depends on IP_NF_CONNTRACK |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | help |
| 53 | This option enables support for connection marks, used by the |
| 54 | `CONNMARK' target and `connmark' match. Similar to the mark value |
| 55 | of packets, but this mark value is kept in the conntrack session |
| 56 | instead of the individual packets. |
| 57 | |
Harald Welte | ac3247b | 2005-08-09 19:28:03 -0700 | [diff] [blame] | 58 | config IP_NF_CONNTRACK_EVENTS |
Patrick McHardy | a795756 | 2005-12-05 13:36:25 -0800 | [diff] [blame] | 59 | bool "Connection tracking events (EXPERIMENTAL)" |
| 60 | depends on EXPERIMENTAL && IP_NF_CONNTRACK |
Harald Welte | ac3247b | 2005-08-09 19:28:03 -0700 | [diff] [blame] | 61 | help |
| 62 | If this option is enabled, the connection tracking code will |
| 63 | provide a notifier chain that can be used by other kernel code |
| 64 | to get notified about changes in the connection tracking state. |
| 65 | |
| 66 | IF unsure, say `N'. |
| 67 | |
Harald Welte | 777ed97 | 2005-09-17 00:41:02 -0700 | [diff] [blame] | 68 | config IP_NF_CONNTRACK_NETLINK |
Patrick McHardy | a795756 | 2005-12-05 13:36:25 -0800 | [diff] [blame] | 69 | tristate 'Connection tracking netlink interface (EXPERIMENTAL)' |
| 70 | depends on EXPERIMENTAL && IP_NF_CONNTRACK && NETFILTER_NETLINK |
Harald Welte | 628f87f | 2005-09-18 00:33:02 -0700 | [diff] [blame] | 71 | depends on IP_NF_CONNTRACK!=y || NETFILTER_NETLINK!=m |
Patrick McHardy | a0aed49 | 2006-04-06 14:17:27 -0700 | [diff] [blame] | 72 | depends on IP_NF_NAT=n || IP_NF_NAT |
Harald Welte | 777ed97 | 2005-09-17 00:41:02 -0700 | [diff] [blame] | 73 | help |
| 74 | This option enables support for a netlink-based userspace interface |
| 75 | |
| 76 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | config IP_NF_CT_PROTO_SCTP |
| 78 | tristate 'SCTP protocol connection tracking support (EXPERIMENTAL)' |
| 79 | depends on IP_NF_CONNTRACK && EXPERIMENTAL |
| 80 | help |
| 81 | With this option enabled, the connection tracking code will |
| 82 | be able to do state tracking on SCTP connections. |
| 83 | |
| 84 | If you want to compile it as a module, say M here and read |
| 85 | <file:Documentation/modules.txt>. If unsure, say `N'. |
| 86 | |
| 87 | config IP_NF_FTP |
| 88 | tristate "FTP protocol support" |
| 89 | depends on IP_NF_CONNTRACK |
| 90 | help |
| 91 | Tracking FTP connections is problematic: special helpers are |
| 92 | required for tracking them, and doing masquerading and other forms |
| 93 | of Network Address Translation on them. |
| 94 | |
| 95 | To compile it as a module, choose M here. If unsure, say Y. |
| 96 | |
| 97 | config IP_NF_IRC |
| 98 | tristate "IRC protocol support" |
| 99 | depends on IP_NF_CONNTRACK |
| 100 | ---help--- |
| 101 | There is a commonly-used extension to IRC called |
| 102 | Direct Client-to-Client Protocol (DCC). This enables users to send |
| 103 | files to each other, and also chat to each other without the need |
| 104 | of a server. DCC Sending is used anywhere you send files over IRC, |
| 105 | and DCC Chat is most commonly used by Eggdrop bots. If you are |
| 106 | using NAT, this extension will enable you to send files and initiate |
| 107 | chats. Note that you do NOT need this extension to get files or |
| 108 | have others initiate chats, or everything else in IRC. |
| 109 | |
| 110 | To compile it as a module, choose M here. If unsure, say Y. |
| 111 | |
Patrick McHardy | a2978ae | 2005-09-06 15:08:51 -0700 | [diff] [blame] | 112 | config IP_NF_NETBIOS_NS |
| 113 | tristate "NetBIOS name service protocol support (EXPERIMENTAL)" |
| 114 | depends on IP_NF_CONNTRACK && EXPERIMENTAL |
| 115 | help |
| 116 | NetBIOS name service requests are sent as broadcast messages from an |
| 117 | unprivileged port and responded to with unicast messages to the |
| 118 | same port. This make them hard to firewall properly because connection |
| 119 | tracking doesn't deal with broadcasts. This helper tracks locally |
| 120 | originating NetBIOS name service requests and the corresponding |
| 121 | responses. It relies on correct IP address configuration, specifically |
| 122 | netmask and broadcast address. When properly configured, the output |
| 123 | of "ip address show" should look similar to this: |
| 124 | |
| 125 | $ ip -4 address show eth0 |
| 126 | 4: eth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 1000 |
| 127 | inet 172.16.2.252/24 brd 172.16.2.255 scope global eth0 |
| 128 | |
| 129 | To compile it as a module, choose M here. If unsure, say N. |
| 130 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | config IP_NF_TFTP |
| 132 | tristate "TFTP protocol support" |
| 133 | depends on IP_NF_CONNTRACK |
| 134 | help |
| 135 | TFTP connection tracking helper, this is required depending |
| 136 | on how restrictive your ruleset is. |
| 137 | If you are using a tftp client behind -j SNAT or -j MASQUERADING |
| 138 | you will need this. |
| 139 | |
| 140 | To compile it as a module, choose M here. If unsure, say Y. |
| 141 | |
| 142 | config IP_NF_AMANDA |
| 143 | tristate "Amanda backup protocol support" |
| 144 | depends on IP_NF_CONNTRACK |
Patrick McHardy | c952616 | 2006-05-29 18:25:58 -0700 | [diff] [blame] | 145 | select TEXTSEARCH |
| 146 | select TEXTSEARCH_KMP |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | help |
| 148 | If you are running the Amanda backup package <http://www.amanda.org/> |
| 149 | on this machine or machines that will be MASQUERADED through this |
| 150 | machine, then you may want to enable this feature. This allows the |
| 151 | connection tracking and natting code to allow the sub-channels that |
| 152 | Amanda requires for communication of the backup data, messages and |
| 153 | index. |
| 154 | |
| 155 | To compile it as a module, choose M here. If unsure, say Y. |
| 156 | |
Harald Welte | 926b50f | 2005-09-19 15:33:08 -0700 | [diff] [blame] | 157 | config IP_NF_PPTP |
| 158 | tristate 'PPTP protocol support' |
Harald Welte | 85d9b05 | 2005-10-10 20:47:42 -0700 | [diff] [blame] | 159 | depends on IP_NF_CONNTRACK |
Harald Welte | 926b50f | 2005-09-19 15:33:08 -0700 | [diff] [blame] | 160 | help |
| 161 | This module adds support for PPTP (Point to Point Tunnelling |
Horst H. von Brand | a5181ab | 2005-10-04 15:58:56 -0700 | [diff] [blame] | 162 | Protocol, RFC2637) connection tracking and NAT. |
Harald Welte | 926b50f | 2005-09-19 15:33:08 -0700 | [diff] [blame] | 163 | |
| 164 | If you are running PPTP sessions over a stateful firewall or NAT |
| 165 | box, you may want to enable this feature. |
| 166 | |
| 167 | Please note that not all PPTP modes of operation are supported yet. |
| 168 | For more info, read top of the file |
| 169 | net/ipv4/netfilter/ip_conntrack_pptp.c |
| 170 | |
| 171 | If you want to compile it as a module, say M here and read |
| 172 | Documentation/modules.txt. If unsure, say `N'. |
| 173 | |
Jing Min Zhao | 5e35941d | 2006-03-20 23:41:17 -0800 | [diff] [blame] | 174 | config IP_NF_H323 |
Patrick McHardy | ca3ba88 | 2006-05-28 22:50:40 -0700 | [diff] [blame] | 175 | tristate 'H.323 protocol support (EXPERIMENTAL)' |
| 176 | depends on IP_NF_CONNTRACK && EXPERIMENTAL |
Jing Min Zhao | 5e35941d | 2006-03-20 23:41:17 -0800 | [diff] [blame] | 177 | help |
| 178 | H.323 is a VoIP signalling protocol from ITU-T. As one of the most |
| 179 | important VoIP protocols, it is widely used by voice hardware and |
| 180 | software including voice gateways, IP phones, Netmeeting, OpenPhone, |
| 181 | Gnomemeeting, etc. |
| 182 | |
| 183 | With this module you can support H.323 on a connection tracking/NAT |
| 184 | firewall. |
| 185 | |
Jing Min Zhao | c0d4cfd | 2006-05-29 18:26:27 -0700 | [diff] [blame^] | 186 | This module supports RAS, Fast Start, H.245 Tunnelling, Call |
| 187 | Forwarding, RTP/RTCP and T.120 based audio, video, fax, chat, |
| 188 | whiteboard, file transfer, etc. For more information, please |
| 189 | visit http://nath323.sourceforge.net/. |
Jing Min Zhao | 5e35941d | 2006-03-20 23:41:17 -0800 | [diff] [blame] | 190 | |
| 191 | If you want to compile it as a module, say 'M' here and read |
| 192 | Documentation/modules.txt. If unsure, say 'N'. |
| 193 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | config IP_NF_QUEUE |
Harald Welte | 7af4cc3 | 2005-08-09 19:44:15 -0700 | [diff] [blame] | 195 | tristate "IP Userspace queueing via NETLINK (OBSOLETE)" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | help |
| 197 | Netfilter has the ability to queue packets to user space: the |
| 198 | netlink device can be used to access them using this driver. |
| 199 | |
Harald Welte | 7af4cc3 | 2005-08-09 19:44:15 -0700 | [diff] [blame] | 200 | This option enables the old IPv4-only "ip_queue" implementation |
| 201 | which has been obsoleted by the new "nfnetlink_queue" code (see |
| 202 | CONFIG_NETFILTER_NETLINK_QUEUE). |
| 203 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | To compile it as a module, choose M here. If unsure, say N. |
| 205 | |
| 206 | config IP_NF_IPTABLES |
| 207 | tristate "IP tables support (required for filtering/masq/NAT)" |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 208 | depends on NETFILTER_XTABLES |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | help |
| 210 | iptables is a general, extensible packet identification framework. |
| 211 | The packet filtering and full NAT (masquerading, port forwarding, |
| 212 | etc) subsystems now use this: say `Y' or `M' here if you want to use |
| 213 | either of those. |
| 214 | |
| 215 | To compile it as a module, choose M here. If unsure, say N. |
| 216 | |
| 217 | # The matches. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | config IP_NF_MATCH_IPRANGE |
| 219 | tristate "IP range match support" |
| 220 | depends on IP_NF_IPTABLES |
| 221 | help |
| 222 | This option makes possible to match IP addresses against IP address |
| 223 | ranges. |
| 224 | |
| 225 | To compile it as a module, choose M here. If unsure, say N. |
| 226 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | config IP_NF_MATCH_TOS |
| 228 | tristate "TOS match support" |
| 229 | depends on IP_NF_IPTABLES |
| 230 | help |
| 231 | TOS matching allows you to match packets based on the Type Of |
| 232 | Service fields of the IP packet. |
| 233 | |
| 234 | To compile it as a module, choose M here. If unsure, say N. |
| 235 | |
| 236 | config IP_NF_MATCH_RECENT |
| 237 | tristate "recent match support" |
| 238 | depends on IP_NF_IPTABLES |
| 239 | help |
| 240 | This match is used for creating one or many lists of recently |
| 241 | used addresses and then matching against that/those list(s). |
| 242 | |
| 243 | Short options are available by using 'iptables -m recent -h' |
| 244 | Official Website: <http://snowman.net/projects/ipt_recent/> |
| 245 | |
| 246 | To compile it as a module, choose M here. If unsure, say N. |
| 247 | |
| 248 | config IP_NF_MATCH_ECN |
| 249 | tristate "ECN match support" |
| 250 | depends on IP_NF_IPTABLES |
| 251 | help |
| 252 | This option adds a `ECN' match, which allows you to match against |
| 253 | the IPv4 and TCP header ECN fields. |
| 254 | |
| 255 | To compile it as a module, choose M here. If unsure, say N. |
| 256 | |
| 257 | config IP_NF_MATCH_DSCP |
| 258 | tristate "DSCP match support" |
| 259 | depends on IP_NF_IPTABLES |
| 260 | help |
| 261 | This option adds a `DSCP' match, which allows you to match against |
| 262 | the IPv4 header DSCP field (DSCP codepoint). |
| 263 | |
| 264 | The DSCP codepoint can have any value between 0x0 and 0x4f. |
| 265 | |
| 266 | To compile it as a module, choose M here. If unsure, say N. |
| 267 | |
Yasuyuki Kozakai | dc5ab2f | 2006-04-01 02:22:30 -0800 | [diff] [blame] | 268 | config IP_NF_MATCH_AH |
| 269 | tristate "AH match support" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | depends on IP_NF_IPTABLES |
| 271 | help |
Yasuyuki Kozakai | dc5ab2f | 2006-04-01 02:22:30 -0800 | [diff] [blame] | 272 | This match extension allows you to match a range of SPIs |
| 273 | inside AH header of IPSec packets. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | |
| 275 | To compile it as a module, choose M here. If unsure, say N. |
| 276 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | config IP_NF_MATCH_TTL |
| 278 | tristate "TTL match support" |
| 279 | depends on IP_NF_IPTABLES |
| 280 | help |
| 281 | This adds CONFIG_IP_NF_MATCH_TTL option, which enabled the user |
| 282 | to match packets by their TTL value. |
| 283 | |
| 284 | To compile it as a module, choose M here. If unsure, say N. |
| 285 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | config IP_NF_MATCH_OWNER |
| 287 | tristate "Owner match support" |
| 288 | depends on IP_NF_IPTABLES |
| 289 | help |
| 290 | Packet owner matching allows you to match locally-generated packets |
| 291 | based on who created them: the user, group, process or session. |
| 292 | |
| 293 | To compile it as a module, choose M here. If unsure, say N. |
| 294 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | config IP_NF_MATCH_ADDRTYPE |
| 296 | tristate 'address type match support' |
| 297 | depends on IP_NF_IPTABLES |
| 298 | help |
| 299 | This option allows you to match what routing thinks of an address, |
| 300 | eg. UNICAST, LOCAL, BROADCAST, ... |
| 301 | |
| 302 | If you want to compile it as a module, say M here and read |
| 303 | <file:Documentation/modules.txt>. If unsure, say `N'. |
| 304 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | config IP_NF_MATCH_HASHLIMIT |
| 306 | tristate 'hashlimit match support' |
| 307 | depends on IP_NF_IPTABLES |
| 308 | help |
| 309 | This option adds a new iptables `hashlimit' match. |
| 310 | |
| 311 | As opposed to `limit', this match dynamically crates a hash table |
| 312 | of limit buckets, based on your selection of source/destination |
| 313 | ip addresses and/or ports. |
| 314 | |
| 315 | It enables you to express policies like `10kpps for any given |
| 316 | destination IP' or `500pps from any given source IP' with a single |
| 317 | IPtables rule. |
| 318 | |
| 319 | # `filter', generic and specific targets |
| 320 | config IP_NF_FILTER |
| 321 | tristate "Packet filtering" |
| 322 | depends on IP_NF_IPTABLES |
| 323 | help |
| 324 | Packet filtering defines a table `filter', which has a series of |
| 325 | rules for simple packet filtering at local input, forwarding and |
| 326 | local output. See the man page for iptables(8). |
| 327 | |
| 328 | To compile it as a module, choose M here. If unsure, say N. |
| 329 | |
| 330 | config IP_NF_TARGET_REJECT |
| 331 | tristate "REJECT target support" |
| 332 | depends on IP_NF_FILTER |
| 333 | help |
| 334 | The REJECT target allows a filtering rule to specify that an ICMP |
| 335 | error should be issued in response to an incoming packet, rather |
| 336 | than silently being dropped. |
| 337 | |
| 338 | To compile it as a module, choose M here. If unsure, say N. |
| 339 | |
| 340 | config IP_NF_TARGET_LOG |
| 341 | tristate "LOG target support" |
| 342 | depends on IP_NF_IPTABLES |
| 343 | help |
| 344 | This option adds a `LOG' target, which allows you to create rules in |
| 345 | any iptables table which records the packet header to the syslog. |
| 346 | |
| 347 | To compile it as a module, choose M here. If unsure, say N. |
| 348 | |
| 349 | config IP_NF_TARGET_ULOG |
Thomas Voegtle | 44adf28 | 2006-04-24 17:15:54 -0700 | [diff] [blame] | 350 | tristate "ULOG target support" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | depends on IP_NF_IPTABLES |
| 352 | ---help--- |
Harald Welte | f40863c | 2005-10-10 20:51:53 -0700 | [diff] [blame] | 353 | |
| 354 | This option enables the old IPv4-only "ipt_ULOG" implementation |
| 355 | which has been obsoleted by the new "nfnetlink_log" code (see |
| 356 | CONFIG_NETFILTER_NETLINK_LOG). |
| 357 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | This option adds a `ULOG' target, which allows you to create rules in |
| 359 | any iptables table. The packet is passed to a userspace logging |
| 360 | daemon using netlink multicast sockets; unlike the LOG target |
| 361 | which can only be viewed through syslog. |
| 362 | |
| 363 | The apropriate userspace logging daemon (ulogd) may be obtained from |
| 364 | <http://www.gnumonks.org/projects/ulogd/> |
| 365 | |
| 366 | To compile it as a module, choose M here. If unsure, say N. |
| 367 | |
| 368 | config IP_NF_TARGET_TCPMSS |
| 369 | tristate "TCPMSS target support" |
| 370 | depends on IP_NF_IPTABLES |
| 371 | ---help--- |
| 372 | This option adds a `TCPMSS' target, which allows you to alter the |
| 373 | MSS value of TCP SYN packets, to control the maximum size for that |
| 374 | connection (usually limiting it to your outgoing interface's MTU |
| 375 | minus 40). |
| 376 | |
| 377 | This is used to overcome criminally braindead ISPs or servers which |
| 378 | block ICMP Fragmentation Needed packets. The symptoms of this |
| 379 | problem are that everything works fine from your Linux |
| 380 | firewall/router, but machines behind it can never exchange large |
| 381 | packets: |
| 382 | 1) Web browsers connect, then hang with no data received. |
| 383 | 2) Small mail works fine, but large emails hang. |
| 384 | 3) ssh works fine, but scp hangs after initial handshaking. |
| 385 | |
| 386 | Workaround: activate this option and add a rule to your firewall |
| 387 | configuration like: |
| 388 | |
| 389 | iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN \ |
| 390 | -j TCPMSS --clamp-mss-to-pmtu |
| 391 | |
| 392 | To compile it as a module, choose M here. If unsure, say N. |
| 393 | |
| 394 | # NAT + specific targets |
| 395 | config IP_NF_NAT |
| 396 | tristate "Full NAT" |
| 397 | depends on IP_NF_IPTABLES && IP_NF_CONNTRACK |
| 398 | help |
| 399 | The Full NAT option allows masquerading, port forwarding and other |
| 400 | forms of full Network Address Port Translation. It is controlled by |
| 401 | the `nat' table in iptables: see the man page for iptables(8). |
| 402 | |
| 403 | To compile it as a module, choose M here. If unsure, say N. |
| 404 | |
| 405 | config IP_NF_NAT_NEEDED |
| 406 | bool |
| 407 | depends on IP_NF_NAT != n |
| 408 | default y |
| 409 | |
| 410 | config IP_NF_TARGET_MASQUERADE |
| 411 | tristate "MASQUERADE target support" |
| 412 | depends on IP_NF_NAT |
| 413 | help |
| 414 | Masquerading is a special case of NAT: all outgoing connections are |
| 415 | changed to seem to come from a particular interface's address, and |
| 416 | if the interface goes down, those connections are lost. This is |
| 417 | only useful for dialup accounts with dynamic IP address (ie. your IP |
| 418 | address will be different on next dialup). |
| 419 | |
| 420 | To compile it as a module, choose M here. If unsure, say N. |
| 421 | |
| 422 | config IP_NF_TARGET_REDIRECT |
| 423 | tristate "REDIRECT target support" |
| 424 | depends on IP_NF_NAT |
| 425 | help |
| 426 | REDIRECT is a special case of NAT: all incoming connections are |
| 427 | mapped onto the incoming interface's address, causing the packets to |
| 428 | come to the local machine instead of passing through. This is |
| 429 | useful for transparent proxies. |
| 430 | |
| 431 | To compile it as a module, choose M here. If unsure, say N. |
| 432 | |
| 433 | config IP_NF_TARGET_NETMAP |
| 434 | tristate "NETMAP target support" |
| 435 | depends on IP_NF_NAT |
| 436 | help |
| 437 | NETMAP is an implementation of static 1:1 NAT mapping of network |
| 438 | addresses. It maps the network address part, while keeping the host |
| 439 | address part intact. It is similar to Fast NAT, except that |
| 440 | Netfilter's connection tracking doesn't work well with Fast NAT. |
| 441 | |
| 442 | To compile it as a module, choose M here. If unsure, say N. |
| 443 | |
| 444 | config IP_NF_TARGET_SAME |
| 445 | tristate "SAME target support" |
| 446 | depends on IP_NF_NAT |
| 447 | help |
| 448 | This option adds a `SAME' target, which works like the standard SNAT |
| 449 | target, but attempts to give clients the same IP for all connections. |
| 450 | |
| 451 | To compile it as a module, choose M here. If unsure, say N. |
| 452 | |
| 453 | config IP_NF_NAT_SNMP_BASIC |
| 454 | tristate "Basic SNMP-ALG support (EXPERIMENTAL)" |
| 455 | depends on EXPERIMENTAL && IP_NF_NAT |
| 456 | ---help--- |
| 457 | |
| 458 | This module implements an Application Layer Gateway (ALG) for |
| 459 | SNMP payloads. In conjunction with NAT, it allows a network |
| 460 | management system to access multiple private networks with |
| 461 | conflicting addresses. It works by modifying IP addresses |
| 462 | inside SNMP payloads to match IP-layer NAT mapping. |
| 463 | |
| 464 | This is the "basic" form of SNMP-ALG, as described in RFC 2962 |
| 465 | |
| 466 | To compile it as a module, choose M here. If unsure, say N. |
| 467 | |
| 468 | config IP_NF_NAT_IRC |
| 469 | tristate |
| 470 | depends on IP_NF_IPTABLES!=n && IP_NF_CONNTRACK!=n && IP_NF_NAT!=n |
| 471 | default IP_NF_NAT if IP_NF_IRC=y |
| 472 | default m if IP_NF_IRC=m |
| 473 | |
| 474 | # If they want FTP, set to $CONFIG_IP_NF_NAT (m or y), |
| 475 | # or $CONFIG_IP_NF_FTP (m or y), whichever is weaker. Argh. |
| 476 | config IP_NF_NAT_FTP |
| 477 | tristate |
| 478 | depends on IP_NF_IPTABLES!=n && IP_NF_CONNTRACK!=n && IP_NF_NAT!=n |
| 479 | default IP_NF_NAT if IP_NF_FTP=y |
| 480 | default m if IP_NF_FTP=m |
| 481 | |
| 482 | config IP_NF_NAT_TFTP |
| 483 | tristate |
| 484 | depends on IP_NF_IPTABLES!=n && IP_NF_CONNTRACK!=n && IP_NF_NAT!=n |
| 485 | default IP_NF_NAT if IP_NF_TFTP=y |
| 486 | default m if IP_NF_TFTP=m |
| 487 | |
| 488 | config IP_NF_NAT_AMANDA |
| 489 | tristate |
| 490 | depends on IP_NF_IPTABLES!=n && IP_NF_CONNTRACK!=n && IP_NF_NAT!=n |
| 491 | default IP_NF_NAT if IP_NF_AMANDA=y |
| 492 | default m if IP_NF_AMANDA=m |
| 493 | |
Harald Welte | 926b50f | 2005-09-19 15:33:08 -0700 | [diff] [blame] | 494 | config IP_NF_NAT_PPTP |
| 495 | tristate |
| 496 | depends on IP_NF_NAT!=n && IP_NF_PPTP!=n |
| 497 | default IP_NF_NAT if IP_NF_PPTP=y |
| 498 | default m if IP_NF_PPTP=m |
| 499 | |
Jing Min Zhao | 5e35941d | 2006-03-20 23:41:17 -0800 | [diff] [blame] | 500 | config IP_NF_NAT_H323 |
| 501 | tristate |
| 502 | depends on IP_NF_IPTABLES!=n && IP_NF_CONNTRACK!=n && IP_NF_NAT!=n |
| 503 | default IP_NF_NAT if IP_NF_H323=y |
| 504 | default m if IP_NF_H323=m |
| 505 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | # mangle + specific targets |
| 507 | config IP_NF_MANGLE |
| 508 | tristate "Packet mangling" |
| 509 | depends on IP_NF_IPTABLES |
| 510 | help |
| 511 | This option adds a `mangle' table to iptables: see the man page for |
| 512 | iptables(8). This table is used for various packet alterations |
| 513 | which can effect how the packet is routed. |
| 514 | |
| 515 | To compile it as a module, choose M here. If unsure, say N. |
| 516 | |
| 517 | config IP_NF_TARGET_TOS |
| 518 | tristate "TOS target support" |
| 519 | depends on IP_NF_MANGLE |
| 520 | help |
| 521 | This option adds a `TOS' target, which allows you to create rules in |
| 522 | the `mangle' table which alter the Type Of Service field of an IP |
| 523 | packet prior to routing. |
| 524 | |
| 525 | To compile it as a module, choose M here. If unsure, say N. |
| 526 | |
| 527 | config IP_NF_TARGET_ECN |
| 528 | tristate "ECN target support" |
| 529 | depends on IP_NF_MANGLE |
| 530 | ---help--- |
| 531 | This option adds a `ECN' target, which can be used in the iptables mangle |
| 532 | table. |
| 533 | |
| 534 | You can use this target to remove the ECN bits from the IPv4 header of |
| 535 | an IP packet. This is particularly useful, if you need to work around |
| 536 | existing ECN blackholes on the internet, but don't want to disable |
| 537 | ECN support in general. |
| 538 | |
| 539 | To compile it as a module, choose M here. If unsure, say N. |
| 540 | |
| 541 | config IP_NF_TARGET_DSCP |
| 542 | tristate "DSCP target support" |
| 543 | depends on IP_NF_MANGLE |
| 544 | help |
| 545 | This option adds a `DSCP' match, which allows you to match against |
| 546 | the IPv4 header DSCP field (DSCP codepoint). |
| 547 | |
| 548 | The DSCP codepoint can have any value between 0x0 and 0x4f. |
| 549 | |
| 550 | To compile it as a module, choose M here. If unsure, say N. |
| 551 | |
Harald Welte | 5f2c3b9 | 2005-08-27 22:37:03 -0700 | [diff] [blame] | 552 | config IP_NF_TARGET_TTL |
| 553 | tristate 'TTL target support' |
| 554 | depends on IP_NF_MANGLE |
| 555 | help |
| 556 | This option adds a `TTL' target, which enables the user to modify |
| 557 | the TTL value of the IP header. |
| 558 | |
| 559 | While it is safe to decrement/lower the TTL, this target also enables |
| 560 | functionality to increment and set the TTL value of the IP header to |
| 561 | arbitrary values. This is EXTREMELY DANGEROUS since you can easily |
| 562 | create immortal packets that loop forever on the network. |
| 563 | |
| 564 | To compile it as a module, choose M here. If unsure, say N. |
| 565 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | config IP_NF_TARGET_CLUSTERIP |
| 567 | tristate "CLUSTERIP target support (EXPERIMENTAL)" |
Yasuyuki Kozakai | 2b8f2ff | 2005-11-20 21:09:55 -0800 | [diff] [blame] | 568 | depends on IP_NF_MANGLE && EXPERIMENTAL |
| 569 | depends on (IP_NF_CONNTRACK && IP_NF_CONNTRACK_MARK) || (NF_CONNTRACK_MARK && NF_CONNTRACK_IPV4) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | help |
| 571 | The CLUSTERIP target allows you to build load-balancing clusters of |
| 572 | network servers without having a dedicated load-balancing |
| 573 | router/server/switch. |
| 574 | |
| 575 | To compile it as a module, choose M here. If unsure, say N. |
| 576 | |
| 577 | # raw + specific targets |
| 578 | config IP_NF_RAW |
| 579 | tristate 'raw table support (required for NOTRACK/TRACE)' |
| 580 | depends on IP_NF_IPTABLES |
| 581 | help |
| 582 | This option adds a `raw' table to iptables. This table is the very |
| 583 | first in the netfilter framework and hooks in at the PREROUTING |
| 584 | and OUTPUT chains. |
| 585 | |
| 586 | If you want to compile it as a module, say M here and read |
| 587 | <file:Documentation/modules.txt>. If unsure, say `N'. |
| 588 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | # ARP tables |
| 590 | config IP_NF_ARPTABLES |
| 591 | tristate "ARP tables support" |
Harald Welte | 2e4e6a1 | 2006-01-12 13:30:04 -0800 | [diff] [blame] | 592 | depends on NETFILTER_XTABLES |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | help |
| 594 | arptables is a general, extensible packet identification framework. |
| 595 | The ARP packet filtering and mangling (manipulation)subsystems |
| 596 | use this: say Y or M here if you want to use either of those. |
| 597 | |
| 598 | To compile it as a module, choose M here. If unsure, say N. |
| 599 | |
| 600 | config IP_NF_ARPFILTER |
| 601 | tristate "ARP packet filtering" |
| 602 | depends on IP_NF_ARPTABLES |
| 603 | help |
| 604 | ARP packet filtering defines a table `filter', which has a series of |
| 605 | rules for simple ARP packet filtering at local input and |
| 606 | local output. On a bridge, you can also specify filtering rules |
| 607 | for forwarded ARP packets. See the man page for arptables(8). |
| 608 | |
| 609 | To compile it as a module, choose M here. If unsure, say N. |
| 610 | |
| 611 | config IP_NF_ARP_MANGLE |
| 612 | tristate "ARP payload mangling" |
| 613 | depends on IP_NF_ARPTABLES |
| 614 | help |
| 615 | Allows altering the ARP packet payload: source and destination |
| 616 | hardware and network addresses. |
| 617 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | endmenu |
| 619 | |