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authorArturo Borrero Gonzalez <arturo@netfilter.org>2018-06-20 15:43:39 +0200
committerFlorian Westphal <fw@strlen.de>2018-06-26 20:25:42 +0200
commit28b22d55615447c94c5058e0aacec612ebc27f2a (patch)
tree4590b457149c87055c1adcf66a3396c1ff445b96 /arptables.8
parent988d6a4cd1b12718177bf3065f07faeabb208713 (diff)
arptables: legacy renaming
The original arptables tool is now the legacy version, let's rename it. A more uptodate client of the arptables tool is provided in the iptables tarball. The new tool was formerly known as arptables-compat. The new -legacy binary should have no problem if called via a symlink. Signed-off-by: Arturo Borrero Gonzalez <arturo@netfilter.org> Signed-off-by: Florian Westphal <fw@strlen.de>
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-.TH ARPTABLES 8 "November 2011"
-.\"
-.\" Man page originally written by Jochen Friedrich <jochen@scram.de>,
-.\" maintained by Bart De Schuymer.
-.\" It is based on the iptables man page.
-.\"
-.\" Iptables page by Herve Eychenne March 2000.
-.\"
-.\" This program is free software; you can redistribute it and/or modify
-.\" it under the terms of the GNU General Public License as published by
-.\" the Free Software Foundation; either version 2 of the License, or
-.\" (at your option) any later version.
-.\"
-.\" This program is distributed in the hope that it will be useful,
-.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
-.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-.\" GNU General Public License for more details.
-.\"
-.\" You should have received a copy of the GNU General Public License
-.\" along with this program; if not, write to the Free Software
-.\" Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-.\"
-.\"
-.SH NAME
-arptables \- ARP table administration
-.SH SYNOPSIS
-.BR "arptables " [ "-t table" ] " -" [ AD ] " chain rule-specification " [ options ]
-.br
-.BR "arptables " [ "-t table" ] " -" [ RI ] " chain rulenum rule-specification " [ options ]
-.br
-.BR "arptables " [ "-t table" ] " -D chain rulenum " [ options ]
-.br
-.BR "arptables " [ "-t table" ] " -" [ "LFZ" ] " " [ chain ] " " [ options ]
-.br
-.BR "arptables " [ "-t table" ] " -" [ "NX" ] " chain"
-.br
-.BR "arptables " [ "-t table" ] " -E old-chain-name new-chain-name"
-.br
-.BR "arptables " [ "-t table" ] " -P chain target " [ options ]
-.SH DESCRIPTION
-.B arptables
-is a user space tool, it is used to set up and maintain the
-tables of ARP rules in the Linux kernel. These rules inspect
-the ARP frames which they see.
-.B arptables
-is analogous to the
-.B iptables
-user space tool, but
-.B arptables
-is less complicated.
-
-.SS CHAINS
-The kernel table is used to divide functionality into
-different sets of rules. Each set of rules is called a chain.
-Each chain is an ordered list of rules that can match ARP frames. If a
-rule matches an ARP frame, then a processing specification tells
-what to do with that matching frame. The processing specification is
-called a 'target'. However, if the frame does not match the current
-rule in the chain, then the next rule in the chain is examined and so forth.
-The user can create new (user-defined) chains which can be used as the 'target' of a rule.
-
-.SS TARGETS
-A firewall rule specifies criteria for an ARP frame and a frame
-processing specification called a target. When a frame matches a rule,
-then the next action performed by the kernel is specified by the target.
-The target can be one of these values:
-.IR ACCEPT ,
-.IR DROP ,
-.IR CONTINUE ,
-.IR RETURN ,
-an 'extension' (see below) or a user-defined chain.
-.PP
-.I ACCEPT
-means to let the frame through.
-.I DROP
-means the frame has to be dropped.
-.I CONTINUE
-means the next rule has to be checked. This can be handy to know how many
-frames pass a certain point in the chain or to log those frames.
-.I RETURN
-means stop traversing this chain and resume at the next rule in the
-previous (calling) chain.
-For the extension targets please see the
-.B "TARGET EXTENSIONS"
-section of this man page.
-.SS TABLES
-There is only one ARP table in the Linux
-kernel. The table is
-.BR filter.
-You can drop the '-t filter' argument to the arptables command.
-The -t argument must be the
-first argument on the arptables command line, if used.
-.TP
-.B "-t, --table"
-.br
-.BR filter ,
-is the only table and contains two (Linux kernels 2.4.X) or three (Linux kernels 2.6.0 and later) built-in chains:
-.B INPUT
-(for frames destined for the host),
-.B OUTPUT
-(for locally-generated frames) and
-.B FORWARD
-(for frames being forwarded by the bridge code). The
-.B FORWARD
-chain doesn't exist in Linux 2.4.X kernels.
-.br
-.br
-.SH ARPTABLES COMMAND LINE ARGUMENTS
-After the initial arptables command line argument, the remaining
-arguments can be divided into several different groups. These groups
-are commands, miscellaneous commands, rule-specifications, match-extensions,
-and watcher-extensions.
-.SS COMMANDS
-The arptables command arguments specify the actions to perform on the table
-defined with the -t argument. If you do not use the -t argument to name
-a table, the commands apply to the default filter table.
-With the exception of the
-.B "-Z"
-command, only one command may be used on the command line at a time.
-.TP
-.B "-A, --append"
-Append a rule to the end of the selected chain.
-.TP
-.B "-D, --delete"
-Delete the specified rule from the selected chain. There are two ways to
-use this command. The first is by specifying an interval of rule numbers
-to delete, syntax: start_nr[:end_nr]. Using negative numbers is allowed, for more
-details about using negative numbers, see the -I command. The second usage is by
-specifying the complete rule as it would have been specified when it was added.
-.TP
-.B "-I, --insert"
-Insert the specified rule into the selected chain at the specified rule number.
-If the current number of rules equals N, then the specified number can be
-between -N and N+1. For a positive number i, it holds that i and i-N-1 specify the
-same place in the chain where the rule should be inserted. The number 0 specifies
-the place past the last rule in the chain and using this number is therefore
-equivalent with using the -A command.
-.TP
-.B "-R, --replace"
-Replaces the specified rule into the selected chain at the specified rule number.
-If the current number of rules equals N, then the specified number can be
-between 1 and N. i specifies the place in the chain where the rule should be replaced.
-.TP
-.B "-P, --policy"
-Set the policy for the chain to the given target. The policy can be
-.BR ACCEPT ", " DROP " or " RETURN .
-.TP
-.B "-F, --flush"
-Flush the selected chain. If no chain is selected, then every chain will be
-flushed. Flushing the chain does not change the policy of the
-chain, however.
-.TP
-.B "-Z, --zero"
-Set the counters of the selected chain to zero. If no chain is selected, all the counters
-are set to zero. The
-.B "-Z"
-command can be used in conjunction with the
-.B "-L"
-command.
-When both the
-.B "-Z"
-and
-.B "-L"
-commands are used together in this way, the rule counters are printed on the screen
-before they are set to zero.
-.TP
-.B "-L, --list"
-List all rules in the selected chain. If no chain is selected, all chains
-are listed.
-.TP
-.B "-N, --new-chain"
-Create a new user-defined chain with the given name. The number of
-user-defined chains is unlimited. A user-defined chain name has maximum
-length of 31 characters.
-.TP
-.B "-X, --delete-chain"
-Delete the specified user-defined chain. There must be no remaining references
-to the specified chain, otherwise
-.B arptables
-will refuse to delete it. If no chain is specified, all user-defined
-chains that aren't referenced will be removed.
-.TP
-.B "-E, --rename-chain"
-Rename the specified chain to a new name. Besides renaming a user-defined
-chain, you may rename a standard chain name to a name that suits your
-taste. For example, if you like PREBRIDGING more than PREROUTING,
-then you can use the -E command to rename the PREROUTING chain. If you do
-rename one of the standard
-.B arptables
-chain names, please be sure to mention
-this fact should you post a question on the
-.B arptables
-mailing lists.
-It would be wise to use the standard name in your post. Renaming a standard
-.B arptables
-chain in this fashion has no effect on the structure or function
-of the
-.B arptables
-kernel table.
-
-.SS MISCELLANOUS COMMANDS
-.TP
-.B "-V, --version"
-Show the version of the arptables userspace program.
-.TP
-.B "-h, --help"
-Give a brief description of the command syntax.
-.TP
-.BR "-j, --jump " "\fItarget\fP"
-The target of the rule. This is one of the following values:
-.BR ACCEPT ,
-.BR DROP ,
-.BR CONTINUE ,
-.BR RETURN ,
-a target extension (see
-.BR "TARGET EXTENSIONS" ")"
-or a user-defined chain name.
-.TP
-.BI "-c, --set-counters " "PKTS BYTES"
-This enables the administrator to initialize the packet and byte
-counters of a rule (during
-.B INSERT,
-.B APPEND,
-.B REPLACE
-operations).
-
-.SS RULE-SPECIFICATIONS
-The following command line arguments make up a rule specification (as used
-in the add and delete commands). A "!" option before the specification
-inverts the test for that specification. Apart from these standard rule
-specifications there are some other command line arguments of interest.
-.TP
-.BR "-s, --source-ip " "[!] \fIaddress\fP[/\fImask]\fP"
-The Source IP specification.
-.TP
-.BR "-d, --destination-ip " "[!] \fIaddress\fP[/\fImask]\fP"
-The Destination IP specification.
-.TP
-.BR "--source-mac " "[!] \fIaddress\fP[/\fImask\fP]"
-The source mac address. Both mask and address are written as 6 hexadecimal
-numbers separated by colons.
-.TP
-.BR "--destination-mac " "[!] \fIaddress\fP[/\fImask\fP]"
-The destination mac address. Both mask and address are written as 6 hexadecimal
-numbers separated by colons.
-.TP
-.BR "-i, --in-interface " "[!] \fIname\fP"
-The interface via which a frame is received (for the
-.BR INPUT " and " FORWARD
-chains). The flag
-.B --in-if
-is an alias for this option.
-.TP
-.BR "-o, --out-interface " "[!] \fIname\fP"
-The interface via which a frame is going to be sent (for the
-.BR OUTPUT " and " FORWARD
-chains). The flag
-.B --out-if
-is an alias for this option.
-.TP
-.BR "-l, --h-length " "\fIlength\fP[/\fImask\fP]"
-The hardware length (nr of bytes)
-.TP
-.BR "--opcode " "\fIcode\fP[/\fImask\fP]
-The operation code (2 bytes). Available values are:
-.BR 1 = Request
-.BR 2 = Reply
-.BR 3 = Request_Reverse
-.BR 4 = Reply_Reverse
-.BR 5 = DRARP_Request
-.BR 6 = DRARP_Reply
-.BR 7 = DRARP_Error
-.BR 8 = InARP_Request
-.BR 9 = ARP_NAK .
-.TP
-.BR "--h-type " "\fItype\fP[/\fImask\fP]"
-The hardware type (2 bytes, hexadecimal). Available values are:
-.BR 1 = Ethernet .
-.TP
-.BR "--proto-type " "\fItype\fP[/\fImask\fP]"
-The protocol type (2 bytes). Available values are:
-.BR 0x800 = IPv4 .
-
-.SS TARGET-EXTENSIONS
-.B arptables
-extensions are precompiled into the userspace tool. So there is no need
-to explicitly load them with a -m option like in
-.BR iptables .
-However, these
-extensions deal with functionality supported by supplemental kernel modules.
-.SS mangle
-.TP
-.BR "--mangle-ip-s IP address"
-Mangles Source IP Address to given value.
-.TP
-.BR "--mangle-ip-d IP address"
-Mangles Destination IP Address to given value.
-.TP
-.BR "--mangle-mac-s MAC address"
-Mangles Source MAC Address to given value.
-.TP
-.BR "--mangle-mac-d MAC address"
-Mangles Destination MAC Address to given value.
-.TP
-.BR "--mangle-target target "
-Target of ARP mangle operation
-.BR "" ( DROP ", " CONTINUE " or " ACCEPT " -- default is " ACCEPT ).
-.SS CLASSIFY
-This module allows you to set the skb->priority value (and thus clas-
-sify the packet into a specific CBQ class).
-
-.TP
-.BR "--set-class major:minor"
-
-Set the major and minor class value. The values are always
-interpreted as hexadecimal even if no 0x prefix is given.
-
-.SS MARK
-This module allows you to set the skb->mark value (and thus classify
-the packet by the mark in u32)
-
-.TP
-.BR "--set-mark mark"
-Set the mark value. The values are always
-interpreted as hexadecimal even if no 0x prefix is given
-
-.TP
-.BR "--and-mark mark"
-Binary AND the mark with bits.
-
-.TP
-.BR "--or-mark mark"
-Binary OR the mark with bits.
-
-.SH MAILINGLISTS
-.BR "" "See " http://netfilter.org/mailinglists.html
-.SH SEE ALSO
-.BR iptables "(8), " ebtables "(8), " arp "(8), " rarp "(8), " ifconfig "(8), " route (8)
-.PP
-.BR "" "See " http://ebtables.sf.net