ipkungfu(8) [debian man page]
ipkungfu(8) System Manager's Manual ipkungfu(8) NAME
ipkungfu - An iptables-based firewall for Linux SYNOPSIS
ipkungfu [ -c ] [ -t ] [ -d ] [ -h ] [ -v ] [ --quiet ] [ --panic ] [ --no-caching DESCRIPTION
ipkungfu is an iptables-based Linux firewall. The primary design goals are security, ease of use, and performance, in that order. It takes advantage of advanced features of iptables, tcpwrappers, and the Linux kernel. It also simplifies the configuration of internet connection sharing, advanced routing, and other networking needs. OPTIONS
-c (or --check) Check whether ipkungfu is loaded, and report any command line options it may have been loaded with. -t (or --test) Runs a configuration test, and displays the results. Note that this does not test or display all configuration options. This gives you an opportunity to verify that major configuration options are correct before putting them into action. -d (or --disable) Disables the firewall. It is important to know exactly what this option does. All traffic is allowed in and out, and in the case of a gateway, all NATed traffic is forwarded (the option retains your connection sharing options). Custom rules are not implemented, and deny_hosts.conf is ignored. -f (or --flush) Disables the firewall COMPLETELY. All rules are flushed, all chains are removed. Any port forwarding or internet connection sharing will cease to work. -h (or --help) Displays brief usage information and exits. -v (or --version) Displays version information and exits. --quiet Runs ipkungfu with no standard output --panic Drops ALL traffic in all directions on all network interfaces. You should probably never use this option. The --panic option is available for the highly unusual situation where you know that an attack is underway but you know of no other way to stop it. --failsafe If ipkungfu fails, --failsafe will cause all firewall policies to revert to ACCEPT. This is useful when working with ipkungfu remotely, to prevent loss of remote access due to firewall failure. --no-caching Disables rules caching feature. FILES
/etc/ipkungfu/ipkungfu.conf /etc/ipkungfu/advanced.conf /etc/ipkungfu/accept_hosts.conf /etc/ipkungfu/deny_hosts.conf /etc/ipkungfu/custom.conf /etc/ipkungfu/log.conf /etc/ipkungfu/redirect.conf /etc/ipkungfu/services.conf /usr/sbin/ipkungfu /usr/share/doc/ipkungfu/AUTHORS /usr/share/doc/ipkungfu/README /usr/share/doc/ipkungfu/FAQ /usr/share/doc/ipkungfu/ChangeLog /usr/share/doc/ipkungfu/COPYING SEE ALSO
iptables(8). January 2003 ipkungfu(8)
Check Out this Related Man Page
FIAIF(8) Administration and Privileged Commands FIAIF(8) NAME
fiaif - FIAIF is an Intelligent Firewall. SYNOPSIS
fiaif <start|stop|restart|force-reload|status|panic|tc-start|tc-stop|tc-status> DESCRIPTION
Fiaif deploys a packet-filtering firewall by reading configuration files and setting up IP packet filtering rules using iptables. The firewall is "zone" based, meaning that each network interface is associated with a defined piece of the "IP universe" on the other side of that interface from the host. A zone is defined in a text file (the zone configuration file) listing rules for the handling of IP traffic into, out of, and through the associated interface. The rules spell out which connections to accept, which to reject, which to ignore, and which to forward through the firewall. It is also possible to setup source and destination NAT for altering the source and/or destination addresses of packets as they pass through. All non-accepted packets are logged to the system log. It should be noted that any packet related to an already accepted connection is allowed though the firewall. OPTIONS
start This will save the current state of netfilter, and apply the new firewall as described in the configuration files. stop Restores the state saved when FIAIF was started. restart Same as stop,start force-reload This option is the same as start, although it does not use any previously saved rules, and can be used even if fiaif has already been started. start-tc Start/restart only traffic shaping. Useful if you are playing arround with that part of the fiaf subsystem. panic Shut off all IP traffic - don't accept any packets from anywhere for any reason. This can be used, for example, if uninvited guests are discovered on the system to quickly close the firewall and start analyzing log files. status Lists all rules in the firewall. test Instead of deploying the firewall, all rules are written to the file specified in the "TEST_FILE" parameter in the global configura- tion file. This command also runs a sanity check on the networking configuration. Any problems or warnings arising from this check are printed to STDERR. Refer to http://www.linuxhq.com/kernel/v2.4/doc/networking/ip-sysctl.txt.html for details on settings tested. When deployed, FIAIF can automatically fix the warnings and/or errors displayed. Please see fiaif.conf(8) for more informa- tion. tc-start Start only traffic shaping. This option ignores the "ENABLE_TC" parameter in the global configuration file. tc-stop Stops the traffic shaping. This option ignores the "ENABLE_TC" parameter in the global configuration file. tc-status Lists packet counters for all traffic classes. FILES
/etc/fiaif/fiaif.conf The global configuration file. See fiaif.conf(8) for further details. /var/lib/fiaif/fiaif file containing rules generated by fiaif. /var/lib/fiaif/iptables previous netfilter state /var/lib/fiaif/sysctl previous state of /proc before fiaif was started. /var/log/messages All illegal packets are logged to this file though syslog(3) DIAGNOSTICS
Errors are logged to STDOUT. If any errors is printed, then please recheck your configuration files. ENVIRONMENT
If the NO_CLEANUP variable is set to a non-empty value, then rules are not cleaned up after FIAIF is started. This will speed up FIAIF startup time, but at the cost of having lots of rules and performance may (on small systems with many zones) be affected. On a three zone system FIAIF generated in total 310 rules. After cleaning up the rules, the number of rules was down to 241. A reduction of 22%. The FIAIF_CONF can be used to specify an anternative global configurationfile, rather than using the default /etc/fiaif/fiaif.conf. This can be used to ease switching between two different firewall configurations. BUGS
The test command line option is no guarantee that the firewall will perform as expected, only that the syntax is correct. Only limited semantic checks of rulesis performed. REPORTING BUGS
Report bugs to <fiaif@fiaif.net>. AUTHOR
Anders Fugmann <anders(at)fugmann.net> SEE ALSO
fiaif.conf(8), zone.conf(8), iptables(8), syslog(3) Linux Dec 2003 FIAIF(8)