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shorewall

NAME

shorewall - Administration tool for Shoreline Firewall (Shorewall)

SYNOPSIS

shorewall [-options] add interface[: host-list] ... zone

shorewall [-options] allow address

shorewall [-options] check [-e] [directory]

shorewall [-options] clear

shorewall [-options] compile [-e] [directory] pathname

shorewall [-options] delete interface[: host-list] ... zone

shorewall [-options] drop address

shorewall [-options] dump [-x] [-m]

shorewall [-options] export [directory1] [user@] system[ : directory2]

shorewall [-options] forget [filename]

shorewall [-options] help

shorewall [-options] hits

shorewall [-options] ipcalc {address mask | address/ vlsm}

shorewall [-options] iprange address1 - address2

shorewall [-options] load [-s] [-c] [-r root-user-name] [directory] system

shorewall [-options] logdrop address

shorewall [-options] logwatch [-m] [refresh-interval]

shorewall [-options] logreject address

shorewall [-options] refresh

shorewall [-options] reject address

shorewall [-options] reload [-s] [-c] [-r root-user-name] [directory] system

shorewall [-options] restart [directory]

shorewall [-options] restore [filename]

shorewall [-options] safe-restart [directory]

shorewall [-options] safe-start [directory]

shorewall [-options] save [filename]

shorewall [-options] show [-x] [-t { filter| mangle| nat| raw}] [chain]...

shorewall [-options] show [-f] capabilities

shorewall [-options] show {actions|classifiers|connections|config|macros|zones}

shorewall [-options] show [-x] {mangle|nat}

shorewall [-options] show tc

shorewall [-options] show [-m] log

shorewall [-options] start [-f] [directory]

shorewall [-options] stop

shorewall [-options] status

shorewall [-options] try directory [timeout]

shorewall [-options] version

DESCRIPTION

The shorewall utility is used to control the Shoreline Firewall (Shorewall).

OPTIONS

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 shorewall.conf(5). Each v adds one to the effective verbosity and each q subtracts one from the effective 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

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 shorewall-interfaces(5) file. A host-list is comma-separated list whose elements are:

         A host or network address
         The name of a bridge port
         The name of a bridge port followed by a colon (:) and a host or network address
 

allow

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

check

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

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

clear

Clear will remove all rules and chains installed by Shorewall. 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, Shorewall will look in that directory first for configuration files.

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 presense of a configuration file named capabilities which may be produced using the command shorewall-lite show -f capabilities > capabilities on a system with Shorewall Lite installed

delete

The delete command reverses the effect of an earlier add command.

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

         A host or network address
         The name of a bridge port
         The name of a bridge port followed by a colon (:) and a host or network address
 

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 Shorewall log messages to be displayed.

export

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

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

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

help

Displays a syntax summary.

hits

Generates several reports from Shorewall log messages in the current log file.

ipcalc

Ipcalc displays the network address, broadcast address, network in CIDR notation and netmask corresponding to the input[s].

iprange

Iprange decomposes the specified range of IP addresses into the equivalent list of network/host addresses.

load

If directory is omitted, the current working directory is assumed. Allows a non-root user to compile a shorewall 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/shorewall compile -e directory directory/firewall &&\
     scp directory/firewall directory/firewall.conf root@system:/var/lib/shorewall-lite/ &&\
     ssh root@system '/sbin/shorewall-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, Shorewall Lite on system is started via ssh.

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

if -c is included, the command shorewall-lite show capabilities -f > /var/lib/shorewall-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".

logdrop

Causes traffic from the listed addresses to be logged then discarded.

logwatch

Monitors the log file specified by the LOGFILE option in shorewall.conf(5) and produces an audible alarm when new Shorewall messages are logged. The -m option causes the MAC address of each packet source to be displayed if that information is available.

logreject

Causes traffic from the listed addresses to be logged then rejected.

refresh

The rules involving the the black list, ECN control rules, and traffic shaping are recreated to reflect any changes made to your configuration files. Existing connections are untouched.

reload

If directory is omitted, the current working directory is assumed. Allows a non-root user to compile a shorewall 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/shorewall compile -e directory directory/firewall &&\
     scp directory/firewall directory/firewall.conf root@system:/var/lib/shorewall-lite/ &&\
     ssh root@system '/sbin/shorewall-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, Shorewall Lite on system is restarted via ssh.

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

if -c is included, the command shorewall-lite show capabilities -f > /var/lib/shorewall-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".

reset

All the packet and byte counters in the firewall are reset.

restart

Restart is similar to shorewall stop followed by shorewall start. Existing connections are maintained. If a directory is included in the command, Shorewall will look in that directory first for configuration files.

restore

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

safe-restart

Only allowed if Shorewall is running. The current configuration is saved in /var/lib/shorewall/safe-restart (see the save command below) then a shorewall 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 Shorewall will look in that directory first when opening configuration files.

safe-start

Shorewall 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 shorewall clear is performed for you. If a directory is given, then Shorewall will look in that directory first when opening configuration files.

save

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

show

The show command can have a number of different arguments:

[ chain ] ...

The rules in each chain are displayed ssing the iptables -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 iptables 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.

actions

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

capabilities

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

classifiers

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

config

Dispays distribution-specific defaults.

connections

Displays the IP connections currently being tracked by the firewall.

log

Displays the last 20 Shorewall messages from the log file specified by the LOGFILE option in shorewall.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 iptables -t mangle -L -n -v.The -x option is passed directly through to iptables and causes actual packet and byte counts to be displayed. Without this option, those counts are abbreviated.

nat

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

tc

Displays information about queuing disciplines, classes and filters.

zones

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

start

Start shorewall. Existing connections through shorewall 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, Shorewall will look in that directory first for configuration files.If -f is specified, the saved configuration specified by the RESTOREFILE option in shorewall.conf(5) will be restored if that saved configuration exists and has been modified more recently than the files in /etc/shorewall. When -f is given, a directory may not be specified.

stop

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

status

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

try

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

version

Displays Shorewall's version.

FILES

/etc/shorewall/

SEE ALSO

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

shorewall-accounting(5), shorewall-actions(5), shorewall-blacklist(5), shorewall-hosts(5), shorewall-interfaces(5), shorewall-ipsec(5), shorewall-maclist(5), shorewall-masq(5), shorewall-nat(5), shorewall-netmap(5), shorewall-params(5), shorewall-policy(5), shorewall-providers(5), shorewall-proxyarp(5), shorewall-route_rules(5), shorewall-routestopped(5), shorewall-rules(5), shorewall.conf(5), shorewall-tcclasses(5), shorewall-tcdevices(5), shorewall-tcrules(5), shorewall-tos(5), shorewall-tunnels(5), shorewall-zones(5)