## Name

shorewall6 — Administration tool for Shoreline Firewall 6 (Shorewall6)

## Synopsis

`shorewall6` [`trace`|`debug` [`nolock`]] [-`options`] `add {` `interface`[:`host-list`]... `zone | zone host-list` `}`

`shorewall6` [`trace`|`debug` [`nolock`]] [-`options`] `allow` `address`

`shorewall6` [`trace`|`debug`] [-`options`] [`check | ck` ] [`-e`] [`-d`] [`-p`] [`-r`] [`-T`] [`-i`] [`directory`]

`shorewall6` [`trace`|`debug` [`nolock`]] [-`options`] `clear`

`shorewall6` [`trace`|`debug`] [-`options`] [`compile | co` ] [`-e`] [`-d`] [`-T`] [`-i`] [`directory`] [`pathname`]

`shorewall6` [`trace`|`debug` [`nolock`]] [-`options`] `delete {` `interface`[:`host-list`]... `zone | zone host-list` `}`

`shorewall6` [`trace`|`debug` [`nolock`]] [-`options`] `disable` { `interface` | `provider` }

`shorewall6` [`trace`|`debug` [`nolock`]] [-`options`] `drop` `address`

`shorewall6` [`trace`|`debug`] [-`options`] `dump` [`-x`] [`-l`] [`-m`] [`-c`]

`shorewall6` [`trace`|`debug` [`nolock`]] [-`options`] `enable` { `interface` | `provider` }

`shorewall6` [`trace`|`debug` [`nolock`]] [-`options`] `export` [`directory1`] [`user`@]`system`[`:``directory2`]

`shorewall6` [`trace`|`debug` [`nolock`]] [-`options`] `forget` [`filename`]

`shorewall6` [`trace`|`debug`] [-`options`] `help`

`shorewall6` [`trace`|`debug`] [-`options`] `iptrace` `iptables match expression`

`shorewall6` [`trace`|`debug`] [-`options`] `load` [`-s`] [`-c`] [`-r` `root-user-name`] [`-T`] [`-i`] [`directory`] `system`

`shorewall6` [`trace`|`debug` [`nolock`]] [-`options`] `logdrop` `address`

`shorewall6` [`trace`|`debug`] [-`options`] `logwatch` [`-m`] [`refresh-interval`]

`shorewall6` [`trace`|`debug` [`nolock`]] [-`options`] `logreject` `address`

`shorewall6` [`trace`|`debug`] [-`options`] `noiptrace` `iptables match expression`

`shorewall6` [`trace`|`debug` [`nolock`]] [-`options`] `recover` [`-n`] [`-p`]

`shorewall6` [`trace`|`debug` [`nolock`]] [-`options`] `refresh` [`-n`] [`-d`] [`-T`] [`-i`] [-`D` `directory` ] [`chain`...]

`shorewall6` [`trace`|`debug` [`nolock`]] [-`options`] `reject` `address`

`shorewall6` [`trace`|`debug`] [-`options`] `reload` [`-s`] [`-c`] [`-r` `root-user-name`] [`-T`] [`-i`] [`directory`] `system`

`shorewall6` [`trace`|`debug` [`nolock`]] [-`options`] `reset`

`shorewall6` [`trace`|`debug` [`nolock`]] [-`options`] `restart` [`-n`] [`-f`] [`-c`] [`-T`] [`-i` [`-C`]] [`directory`]

`shorewall6` [`trace`|`debug` [`nolock`]] [-`options`] `restore` [`-C`] [`filename`]

`shorewall6` [`trace`|`debug` [`nolock`]] [-`options`] `run` `command` [`parameter ...`]

`shorewall6` [`trace`|`debug` [`nolock`]] [-`options`] `safe-restart` [`-d`] [`-t` `timeout`] [`directory`]

`shorewall6` [`trace`|`debug`] [-`options`] `safe-start` [`-d`] [`-t` `timeout`] [`directory`]

`shorewall6` [`trace`|`debug` [`nolock`]] [-`options`] `save` [`-C`] [`filename`]

`shorewall6` [`trace`|`debug`] [-`options`] {`show | list | ls` } [`-x`] `{bl|blacklists}`

`shorewall6` [`trace`|`debug`] [-`options`] {`show | list | ls` } [`-b`] [`-x`] [`-l`] [`-t` {`filter`|`mangle`|`raw`}] [[`chain`] `chain`... ]

`shorewall6` [`trace`|`debug`] [-`options`] {`show | list | ls` } [`-f`] `capabilities`

`shorewall6` [`trace`|`debug`] [-`options`] {`show | list | ls` } {`actions|classifiers|connections|config|events|filters|ip|macros|zones|policies|tc|marks`}

`shorewall6` [`trace`|`debug`] [-`options`] {`show | list | ls` } `event` `event`

`shorewall6` [`trace`|`debug`] [-`options`] {`show | list | ls` } [`-c`] `routing`

`shorewall6` [`trace`|`debug`] [-`options`] {`show | list | ls` } [`-x`] {`mangle|nat|raw|rawpost`}

`shorewall6` [`trace`|`debug`] [-`options`] {`show | list | ls` } `tc`

`shorewall6` [`trace`|`debug`] [-`options`] {`show | list | ls` } [`-m`] `log`

`shorewall6` [`trace`|`debug` [`nolock`]] [-`options`] `start` [`-n`] [`-f`] [`-c`] [`-T`] [`-i` [`-C`]] [`directory`]

`shorewall6` [`trace`|`debug` [`nolock`]] [-`options`] `stop`

`shorewall6` [`trace`|`debug`] [-`options`] `status` [`-i`]

`shorewall6` [`trace`|`debug` [`nolock`]] [-`options`] `try` `directory` [`timeout`]

`shorewall6` [`trace`|`debug`] [-`options`] `update` [`-b`] [`-d`] [`-r`] [`-T`] [`-a`] [`-D`] [`-i`] [`-t`] [`-A`] [`directory`]

`shorewall6` [`trace`|`debug`] [-`options`] `version` [`-a`]

## Description

The shorewall6 utility is used to control the Shoreline Firewall 6 (Shorewall6).

## Options

The `trace` and `debug` options are used for debugging. See http://www.shorewall.net/starting_and_stopping_shorewall.htm#Trace.

The `nolock` option prevents the command from attempting to acquire the Shorewall6 lockfile. It is useful if you need to include shorewall6 commands in `/etc/shorewall6/started`.

The options control the amount of output that the command produces. They consist of a sequence of the letters v and q. If the options are omitted, the amount of output is determined by the setting of the VERBOSITY parameter in shorewall6.conf(5). Each v adds one to the effective verbosity and each q subtracts one from the effective VERBOSITY. Alternatively, v may be followed immediately with one of -1,0,1,2 to specify a specify VERBOSITY. There may be no white-space between v and the VERBOSITY.

The options may also include the letter `t` which causes all progress messages to be timestamped.

## Commands

The available commands are listed below.

add

  Added in Shorewall 4.4.21. Adds a list of hosts or subnets to a dynamic zone usually used with VPN's.

  The interface argument names an interface defined in the shorewall6-interfaces(5) file. A host-list is comma-separated list whose elements are host or network addresses.

  ### Caution

  The add command is not very robust. If there are errors in the `host-list`, you may see a large number of error messages yet a subsequent shorewall show zones command will indicate that all hosts were added. If this happens, replace add by delete and run the same command again. Then enter the correct command.

  Beginning with Shorewall 4.5.9, the dynamic_shared zone option (shorewall6-zones(5)) allows a single ipset to handle entries for multiple interfaces. When that option is specified for a zone, the add command has the alternative syntax in which the `zone` name precedes the `host-list`.

allow

  Re-enables receipt of packets from hosts previously blacklisted by a drop, logdrop, reject, or logreject command.

check

  Compiles the configuration in the specified directory and discards the compiled output script. If no directory is given, then `/etc/shorewall6` is assumed.

  The `-e` option causes the compiler to look for a file named capabilities. This file is produced using the command shorewall6-lite show -f capabilities > capabilities on a system with Shorewall6 Lite installed.

  The `-d` option causes the compiler to be run under control of the Perl debugger.

  The `-p` option causes the compiler to be profiled via the Perl `-wd:DProf` command-line option.

  The `-r` option was added in Shorewall 4.5.2 and causes the compiler to print the generated ruleset to standard out.

  The `-T` option was added in Shorewall 4.4.20 and causes a Perl stack trace to be included with each compiler-generated error and warning message.

  The `-i` option was added in Shorewall 4.6.0 and causes a warning message to be issued if the line current line contains alternative input specifications following a semicolon (";"). Such lines will be handled incorrectly if INLINE_MATCHES is set to Yes in shorewall6.conf(5).

clear

  Clear will remove all rules and chains installed by Shorewall6. The firewall is then wide open and unprotected. Existing connections are untouched. Clear is often used to see if the firewall is causing connection problems.

compile

  Compiles the current configuration into the executable file pathname. If a directory is supplied, Shorewall6 will look in that directory first for configuration files. If the pathname is omitted, the file firewall in the VARDIR (normally `/var/lib/shorewall/`) is assumed. A pathname of '-' causes the compiler to send the generated script to it's standard output file. Note that '-v-1' is usually specified in this case (e.g., shorewall6 -v-1 compile -- -) to suppress the 'Compiling...' message normally generated by `/sbin/shorewall6`.

  When `-e` is specified, the compilation is being performed on a system other than where the compiled script will run. This option disables certain configuration options that require the script to be compiled where it is to be run. The use of `-e` requires the presence of a configuration file named `capabilities` which may be produced using the command shorewall6-lite show -f capabilities > capabilities on a system with Shorewall6 Lite installed.

  The `-c` option was added in Shorewall 4.5.17 and causes conditional compilation of a script. The script specified by `pathname` (or implied if pathname is omitted) is compiled if it doesn't exist or if there is any file in the `directory` or in a directory on the CONFIG_PATH that has a modification time later than the file to be compiled. When no compilation is needed, a message is issued and an exit status of zero is returned.

  The `-d` option causes the compiler to be run under control of the Perl debugger.

  The `-p` option causes the compiler to be profiled via the Perl `-wd:DProf` command-line option.

  The `-T` option was added in Shorewall 4.4.20 and causes a Perl stack trace to be included with each compiler-generated error and warning message.

  The `-i` option was added in Shorewall 4.6.0 and causes a warning message to be issued if the line current line contains alternative input specifications following a semicolon (";"). Such lines will be handled incorrectly if INLINE_MATCHES is set to Yes in shorewall6.conf(5).

delete

  Added in Shorewall 4.4.21. The delete command reverses the effect of an earlier add command.

  The interface argument names an interface defined in the shorewall6-interfaces(5) file. A host-list is comma-separated list whose elements are a host or network address.

  Beginning with Shorewall 4.5.9, the dynamic_shared zone option (shorewall6-zones(5)) allows a single ipset to handle entries for multiple interfaces. When that option is specified for a zone, the delete command has the alternative syntax in which the `zone` name precedes the `host-list`.

disable

  Added in Shorewall 4.4.26. Disables the optional provider associated with the specified `interface` or `provider`. Where more than one provider share a single network interface, a `provider` name must be given.

  Beginning with Shorewall 4.5.10, this command may be used with any optional network interface. `interface` may be either the logical or physical name of the interface. The command removes any routes added from shorewall6-routes(5) and any traffic shaping configuration for the interface.

drop

  Causes traffic from the listed addresses to be silently dropped.

dump

  Produces a verbose report about the firewall configuration for the purpose of problem analysis.

  The `-x` option causes actual packet and byte counts to be displayed. Without that option, these counts are abbreviated.

  The `-m` option causes any MAC addresses included in Shorewall6 log messages to be displayed.

  The `-l` option causes the rule number for each Netfilter rule to be displayed.

  The `-c` option causes the route cache to be dumped in addition to the other routing information.

enable

  Added in Shorewall 4.4.26. Enables the optional provider associated with the specified `interface` or `provider`. Where more than one provider share a single network interface, a `provider` name must be given.

  Beginning with Shorewall 4.5.10, this command may be used with any optional network interface. `interface` may be either the logical or physical name of the interface. The command sets `/proc` entries for the interface, adds any route specified in shorewall6-routes(5) and installs the interface's traffic shaping configuration, if any.

export

  If directory1 is omitted, the current working directory is assumed.

  Allows a non-root user to compile a shorewall6 script and stage it on a system (provided that the user has access to the system via ssh). The command is equivalent to:

          /sbin/shorewall6 compile -e directory1 directory1/firewall &&\
          scp directory1/firewall directory1/firewall.conf [user@]system:[directory2]

  In other words, the configuration in the specified (or defaulted) directory is compiled to a file called firewall in that directory. If compilation succeeds, then firewall and firewall.conf are copied to system using scp.

forget

  Deletes `/var/lib/shorewall6/`filename`` and `/var/lib/shorewall6/save` . If no filename is given then the file specified by RESTOREFILE in shorewall6.conf(5) is assumed.

help

  Displays a syntax summary.

iptrace

  This is a low-level debugging command that causes iptables TRACE log records to be created. See ip6tables(8) for details.

  The `ip6tables match expression` must be one or more matches that may appear in both the raw table OUTPUT and raw table PREROUTING chains.

  The log message destination is determined by the currently-selected IPv6 logging backend.

load

  If directory is omitted, the current working directory is assumed. Allows a non-root user to compile a shorewall6 script and install it on a system (provided that the user has root access to the system via ssh). The command is equivalent to:

          /sbin/shorewall6 compile -e directory directory/firewall &&\
          scp directory/firewall directory/firewall.conf root@system:/var/lib/shorewall6-lite/ &&\
          ssh root@system '/sbin/shorewall6-lite start'

  In other words, the configuration in the specified (or defaulted) directory is compiled to a file called firewall in that directory. If compilation succeeds, then firewall is copied to `system` using scp. If the copy succeeds, Shorewall6 Lite on `system` is started via ssh.

  If `-s` is specified and the start command succeeds, then the remote Shorewall6-lite configuration is saved by executing shorewall6-lite save via ssh.

  if `-c` is included, the command shorewall6-lite show capabilities -f > /var/lib/shorewall6-lite/capabilities is executed via ssh then the generated file is copied to `directory` using scp. This step is performed before the configuration is compiled.

  If `-r` is included, it specifies that the root user on `system` is named `root-user-name` rather than "root".

  The `-T` option was added in Shorewall 4.5.3 and causes a Perl stack trace to be included with each compiler-generated error and warning message.

  The `-i` option was added in Shorewall 4.6.0 and causes a warning message to be issued if the line current line contains alternative input specifications following a semicolon (";"). Such lines will be handled incorrectly if INLINE_MATCHES is set to Yes in shorewall6.conf(5).

logdrop

  Causes traffic from the listed addresses to be logged then discarded. Logging occurs at the log level specified by the BLACKLIST_LOGLEVEL setting in shorewall6.conf (5).

logwatch

  Monitors the log file specified by the LOGFILE option in shorewall6.conf(5) and produces an audible alarm when new Shorewall6 messages are logged. The `-m` option causes the MAC address of each packet source to be displayed if that information is available. The `refresh-interval` specifies the time in seconds between screen refreshes. You can enter a negative number by preceding the number with "--" (e.g., shorewall6 logwatch -- -30). In this case, when a packet count changes, you will be prompted to hit any key to resume screen refreshes.

logreject

  Causes traffic from the listed addresses to be logged then rejected. Logging occurs at the log level specified by the BLACKLIST_LOGLEVEL setting in shorewall6.conf (5).

noiptrace

  This is a low-level debugging command that cancels a trace started by a preceding iptrace command.

  The `iptables match expression` must be one given in the iptrace command being canceled.

refresh

  All steps performed by restart are performed by refresh with the exception that refresh only recreates the chains specified in the command while restart recreates the entire Netfilter ruleset.When no chain name is given to the refresh command, the mangle table is refreshed along with the blacklist chain (if any). This allows you to modify `/etc/shorewall6/tcrules`and install the changes using refresh.

  The listed chains are assumed to be in the filter table. You can refresh chains in other tables by prefixing the chain name with the table name followed by ":" (e.g., nat:net_dnat). Chain names which follow are assumed to be in that table until the end of the list or until an entry in the list names another table. Built-in chains such as FORWARD may not be refreshed.

  The `-n` option was added in Shorewall 4.5.3 causes Shorewall to avoid updating the routing table(s).

  The `-d` option was added in Shorewall 4.5.3 causes the compiler to run under the Perl debugger.

  The `-T` option was added in Shorewall 4.5.3 and causes a Perl stack trace to be included with each compiler-generated error and warning message.

  The `-i` option was added in Shorewall 4.6.0 and causes a warning message to be issued if the line current line contains alternative input specifications following a semicolon (";"). Such lines will be handled incorrectly if INLINE_MATCHES is set to Yes in shorewall6.conf(5).

  The -`D` option was added in Shorewall 4.5.3 and causes Shorewall to look in the given directory first for configuration files.

  Example 1. Refresh the 'net-fw' chain in the filter table and the 'net_dnat' chain in the nat table

      shorewall6 refresh net-fw nat:net_dnat

reload

  If directory is omitted, the current working directory is assumed. Allows a non-root user to compile a shorewall6 script and install it on a system (provided that the user has root access to the system via ssh). The command is equivalent to:

          /sbin/shorewall6 compile -e directory directory/firewall &&\
          scp directory/firewall directory/firewall.conf root@system:/var/lib/shorewall6-lite/ &&\
          ssh root@system '/sbin/shorewall6-lite restart'

  In other words, the configuration in the specified (or defaulted) directory is compiled to a file called firewall in that directory. If compilation succeeds, then firewall is copied to system using scp. If the copy succeeds, Shorewall6 Lite on system is restarted via ssh.

  If `-s` is specified and the restart command succeeds, then the remote Shorewall6-lite configuration is saved by executing shorewall6-lite save via ssh.

  if `-c` is included, the command shorewall6-lite show capabilities -f > /var/lib/shorewall6-lite/capabilities is executed via ssh then the generated file is copied to directory using scp. This step is performed before the configuration is compiled.

  If `-r` is included, it specifies that the root user on `system` is named `root-user-name` rather than "root".

  The `-T` option was added in Shorewall 4.5.3 and causes a Perl stack trace to be included with each compiler-generated error and warning message.

  The `-i` option was added in Shorewall 4.6.0 and causes a warning message to be issued if the line current line contains alternative input specifications following a semicolon (";"). Such lines will be handled incorrectly if INLINE_MATCHES is set to Yes in shorewall6.conf(5).

reset [`chain`, ...]

  Resets the packet and byte counters in the specified `chain`(s). If no `chain` is specified, all the packet and byte counters in the firewall are reset.

restart

  Restart is similar to shorewall6 start except that it assumes that the firewall is already started. Existing connections are maintained. If a directory is included in the command, Shorewall6 will look in that directory first for configuration files.

  The `-n` option causes Shorewall6 to avoid updating the routing table(s).

  The `-p` option causes the connection tracking table to be flushed; the conntrack utility must be installed to use this option.

  The `-d` option causes the compiler to run under the Perl debugger.

  The `-f` option suppresses the compilation step and simply reused the compiled script which last started/restarted Shorewall, provided that `/etc/shorewall6` and its contents have not been modified since the last start/restart.

  The `-c` option was added in Shorewall 4.4.20 and performs the compilation step unconditionally, overriding the AUTOMAKE setting in shorewall6.conf(5). When both `-f` and `-c` are present, the result is determined by the option that appears last.

  The `-T` option was added in Shorewall 4.5.3 and causes a Perl stack trace to be included with each compiler-generated error and warning message.

  The `-i` option was added in Shorewall 4.6.0 and causes a warning message to be issued if the line current line contains alternative input specifications following a semicolon (";"). Such lines will be handled incorrectly if INLINE_MATCHES is set to Yes in shorewall6.conf(5).

  The `-C` option was added in Shorewall 4.6.5 and is only meaningful when AUTOMAKE=Yes in shorewall6.conf(5). If an existing firewall script is used and if that script was the one that generated the current running configuration, then the running netfilter configuration will be reloaded as is so as to preserve the iptables packet and byte counters.

restore

  Restore Shorewall6 to a state saved using the shorewall6 save command. Existing connections are maintained. The filename names a restore file in `/var/lib/shorewall6` created using shorewall6 save; if no filename is given then Shorewall6 will be restored from the file specified by the RESTOREFILE option in shorewall6.conf(5).

  ### Caution

  If your ip6tables ruleset depends on variables that are detected at run-time, either in your params file or by Shorewall-generated code, restore will use the values that were current when the ruleset was saved, which may be different from the current values.

  The `-C` option was added in Shorewall 4.6.5. If the `-C` option was specified during shorewall6 save, then the counters saved by that operation will be restored.

run

  Added in Shorewall 4.6.3. Executes `command` in the context of the generated script passing the supplied `parameter`s. Normally, the `command` will be a function declared in `lib.private`.

  Before executing the `command`, the script will detect the configuration, setting all SW_* variables and will run your `init` extension script with $COMMAND = 'run'.

  If there are files in the CONFIG_PATH that were modified after the current firewall script was generated, the following warning message is issued before the script's run command is executed:

      WARNING: /var/lib/shorewall6/firewall is not up to
                date

safe-restart

  Only allowed if Shorewall6 is running. The current configuration is saved in `/var/lib/shorewall6/safe-restart` (see the save command below) then a shorewall6 restart is done. You will then be prompted asking if you want to accept the new configuration or not. If you answer "n" or if you fail to answer within 60 seconds (such as when your new configuration has disabled communication with your terminal), the configuration is restored from the saved configuration. If a directory is given, then Shorewall6 will look in that directory first when opening configuration files.

  Beginning with Shorewall 4.5.0, you may specify a different `timeout` value using the `-t` option. The numeric `timeout` may optionally be followed by an `s`, `m` or `h` suffix (e.g., 5m) to specify seconds, minutes or hours respectively. If the suffix is omitted, seconds is assumed.

safe-start

  Shorewall6 is started normally. You will then be prompted asking if everything went all right. If you answer "n" or if you fail to answer within 60 seconds (such as when your new configuration has disabled communication with your terminal), a shorewall6 clear is performed for you. If a directory is given, then Shorewall6 will look in that directory first when opening configuration files.

  Beginning with Shorewall 4.5.0, you may specify a different `timeout` value using the `-t` option. The numeric `timeout` may optionally be followed by an `s`, `m` or `h` suffix (e.g., 5m) to specify seconds, minutes or hours respectively. If the suffix is omitted, seconds is assumed.

save

  The dynamic blacklist is stored in `/var/lib/shorewall6/save`. The state of the firewall is stored in `/var/lib/shorewall6/`filename`` for use by the shorewall6 restore and shorewall6 -f start commands. If filename is not given then the state is saved in the file specified by the RESTOREFILE option in shorewall6.conf(5).

  The `-C` option, added in Shorewall 4.6.5, causes the ip6tables packet and byte counters to be saved along with the chains and rules.

show

  The show command can have a number of different arguments:

  actions

    Produces a report about the available actions (built-in, standard and user-defined).

  bl|blacklists

    Added in Shorewall 4.6.2. Displays the dynamic chain along with any chains produced by entries in shorewall-blrules(5).The `-x` option is passed directly through to ip6tables and causes actual packet and byte counts to be displayed. Without this option, those counts are abbreviated.

  capabilities

    Displays your kernel/ip6tables capabilities. The `-f` option causes the display to be formatted as a capabilities file for use with shorewall6 compile -e.

  [ [ `chain` ] chain... ]

    The rules in each chain are displayed using the ip6tables -L chain -n -v command. If no chain is given, all of the chains in the filter table are displayed. The `-x` option is passed directly through to ip6tables and causes actual packet and byte counts to be displayed. Without this option, those counts are abbreviated. The `-t` option specifies the Netfilter table to display. The default is filter.

    The `-b` ('brief') option causes rules which have not been used (i.e. which have zero packet and byte counts) to be omitted from the output. Chains with no rules displayed are also omitted from the output.

    The `-l` option causes the rule number for each Netfilter rule to be displayed.

    If the `-t` option and the `chain` keyword are both omitted and any of the listed `chain`s do not exist, a usage message is displayed.

  classifiers|filters

    Displays information about the packet classifiers defined on the system as a result of traffic shaping configuration.

  config

    Displays distribution-specific defaults.

  connections

    Displays the IP connections currently being tracked by the firewall.

  event `event`

    Added in Shorewall 4.5.19. Displays the named event.

  events

    Added in Shorewall 4.5.19. Displays all events.

  ip

    Displays the system's IPv6 configuration.

  log

    Displays the last 20 Shorewall6 messages from the log file specified by the LOGFILE option in shorewall6.conf(5). The `-m` option causes the MAC address of each packet source to be displayed if that information is available.

  macros

    Displays information about each macro defined on the firewall system.

  mangle

    Displays the Netfilter mangle table using the command ip6tables -t mangle -L -n -v.The `-x` option is passed directly through to ip6tables and causes actual packet and byte counts to be displayed. Without this option, those counts are abbreviated.

  marks

    Added in Shorewall 4.4.26. Displays the various fields in packet marks giving the min and max value (in both decimal and hex) and the applicable mask (in hex).

  policies

    Added in Shorewall 4.4.4. Displays the applicable policy between each pair of zones. Note that implicit intrazone ACCEPT policies are not displayed for zones associated with a single network where that network doesn't specify `routeback`.

  routing

    Displays the system's IPv6 routing configuration. The -c option causes the route cache to be displayed in addition to the other routing information.

  tc

    Displays information about queuing disciplines, classes and filters.

  zones

    Displays the current composition of the Shorewall6 zones on the system.

start

  Start shorewall6. Existing connections through shorewall6 managed interfaces are untouched. New connections will be allowed only if they are allowed by the firewall rules or policies. If a `directory` is included in the command, Shorewall6 will look in that directory first for configuration files. If `-f` is specified, the saved configuration specified by the RESTOREFILE option in shorewall6.conf(5) will be restored if that saved configuration exists and has been modified more recently than the files in `/etc/shorewall6`. When `-f` is given, a `directory` may not be specified.

  Update: In Shorewall6 4.4.20, a new LEGACY_FASTSTART option was added to shorewall6.conf(5). When LEGACY_FASTSTART=No, the modification times of files in `/etc/shorewall6` are compared with that of `/var/lib/shorewall6/firewall` (the compiled script that last started/restarted the firewall).

  The `-n` option causes Shorewall6 to avoid updating the routing table(s).

  The `-c` option was added in Shorewall 4.4.20 and performs the compilation step unconditionally, overriding the AUTOMAKE setting in shorewall6.conf(5). When both `-f` and `-c` are present, the result is determined by the option that appears last.

  The `-T` option was added in Shorewall 4.5.3 and causes a Perl stack trace to be included with each compiler-generated error and warning message.

  The `-i` option was added in Shorewall 4.6.0 and causes a warning message to be issued if the line current line contains alternative input specifications following a semicolon (";"). Such lines will be handled incorrectly if INLINE_MATCHES is set to Yes in shorewall6.conf(5).

  The `-C` option was added in Shorewall 4.6.5 and is only meaningful when the `-f` option is also specified. If the previously-saved configuration is restored, and if the `-C` option was also specified in the save command, then the packet and byte counters will be restored along with the chains and rules.

stop

  Stops the firewall. All existing connections, except those listed in shorewall6-routestopped(5) or permitted by the ADMINISABSENTMINDED option in shorewall6.conf(5), are taken down. The only new traffic permitted through the firewall is from systems listed in shorewall6-routestopped(5) or by ADMINISABSENTMINDED.

status

  Produces a short report about the state of the Shorewall6-configured firewall.

  The `-i` option was added in Shorewall 4.6.2 and causes the status of each optional or provider interface to be displayed.

try

  If Shorewall6 is started then the firewall state is saved to a temporary saved configuration (`/var/lib/shorewall6/.try`). Next, if Shorewall6 is currently started then a restart command is issued using the specified configuration `directory`; otherwise, a start command is performed using the specified configuration `directory`. if an error occurs during the compilation phase of the restart or start , the command terminates without changing the Shorewall6 state. If an error occurs during the restart phase, then a shorewall6 restore is performed using the saved configuration. If an error occurs during the start phase, then Shorewall6 is cleared. If the start/ restart succeeds and a `timeout` is specified then a clear or restore is performed after `timeout` seconds.

  Beginning with Shorewall 4.5.0, the numeric `timeout` may optionally be followed by an `s`, `m` or `h` suffix (e.g., 5m) to specify seconds, minutes or hours respectively. If the suffix is omitted, seconds is assumed.

update

  Added in Shorewall 4.4.21 and causes the compiler to update `/etc/shorewall6/shorewall6.conf` then validate the configuration. The update will add options not present in the existing file with their default values, and will move deprecated options with non-defaults to a deprecated options section at the bottom of the file. Your existing `shorewall6.conf` file is renamed `shorewall6.conf.bak`.

  The `-a` option causes the updated `shorewall6.conf` file to be annotated with documentation.

  The `-b` option was added in Shorewall 4.4.26 and causes legacy blacklisting rules (shorewall6-blacklist (5) ) to be converted to entries in the blrules file (shorewall6-blrules (5) ). The blacklist keyword is removed from shorewall6-zones (5), shorewall6-interfaces (5) and shorewall6-hosts (5). The unmodified files are saved with a .bak suffix.

  The `-D` option was added in Shorewall 4.5.11. When this option is specified, the compiler will walk through the directories in the CONFIG_PATH replacing FORMAT and COMMENT entries to compiler directives (e.g., ?FORMAT and ?COMMENT. When a file is updated, the original is saved in a .bak file in the same directory.

  The `-i` option was added in Shorewall 4.6.0 and causes a warning message to be issued if the line current line contains alternative input specifications following a semicolon (";"). Such lines will be handled incorrectly if INLINE_MATCHES is set to Yes in shorewall6.conf(5).

  The `-t` option was added in Shorewall 4.6.0. When specified, `-t` causes shorewall6-tcrules(5) to be converted to shorewall6-mangle(5). The old file is renamed with a .bak suffix.

  ### Important

  There are some notable restrictions with the `-t` option:

  1. Converted rules will be appended to the existing `mangle` file; if there is no `mangle` file in the CONFIG_PATH, one will be created in `/etc/shorewall6`.

  2. Existing comments in the `tcrules` file will not be transferred to the `mangle` file.

  3. INCLUDEd files will be expanded inline in the `mangle` file.

  4. Columns in the `mangle` file will be separated by a single tab character; there is no attempt made to otherwise align the columns.

  The `-A` option was added in Shorewall 4.6.0 and is equivalent to specifying the `-b`, `-D` and the `-t` options.

  For a description of the other options, see the check command above.

version

  Displays Shorewall6's version. If the `-a` option is included, the version of Shorewall will also be displayed.

## EXIT STATUS

In general, when a command succeeds, status 0 is returned; when the command fails, a non-zero status is returned.

The status command returns exit status as follows:

0 - Firewall is started.

3 - Firewall is stopped or cleared

4 - Unknown state; usually means that the firewall has never been started.

## See ALSO

http://www.shorewall.net/starting_and_stopping_shorewall.htm

shorewall6-accounting(5), shorewall6-actions(5), shorewall6-blacklist(5), shorewall6-hosts(5), shorewall6-interfaces(5), shorewall6-maclist(5), shorewall6-netmap(5),shorewall6-params(5), shorewall6-policy(5), shorewall6-providers(5), shorewall6-rtrules(5), shorewall6-routestopped(5), shorewall6-rules(5), shorewall6.conf(5), shorewall6-secmarks(5), shorewall6-tcclasses(5), shorewall6-tcdevices(5), shorewall6-tcrules(5), shorewall6-tos(5), shorewall6-tunnels(5), shorewall6-zones(5)