#!/sbin/runscript # Copyright 1999-2013 Gentoo Foundation # Distributed under the terms of the GNU General Public License v2 # $Id$ extra_commands="check save panic" extra_started_commands="reload" iptables_name=${SVCNAME} case ${iptables_name} in iptables|ip6tables) ;; *) iptables_name="iptables" ;; esac iptables_bin="/sbin/${iptables_name}" case ${iptables_name} in iptables) iptables_proc="/proc/net/ip_tables_names" iptables_save=${IPTABLES_SAVE};; ip6tables) iptables_proc="/proc/net/ip6_tables_names" iptables_save=${IP6TABLES_SAVE};; esac depend() { need localmount #434774 before net } set_table_policy() { local chains table=$1 policy=$2 case ${table} in nat) chains="PREROUTING POSTROUTING OUTPUT";; mangle) chains="PREROUTING INPUT FORWARD OUTPUT POSTROUTING";; filter) chains="INPUT FORWARD OUTPUT";; *) chains="";; esac local chain for chain in ${chains} ; do ${iptables_bin} -w -t ${table} -P ${chain} ${policy} done } checkkernel() { if [ ! -e ${iptables_proc} ] ; then eerror "Your kernel lacks ${iptables_name} support, please load" eerror "appropriate modules and try again." return 1 fi return 0 } checkconfig() { if [ ! -f ${iptables_save} ] ; then eerror "Not starting ${iptables_name}. First create some rules then run:" eerror "/etc/init.d/${iptables_name} save" return 1 fi return 0 } start() { checkconfig || return 1 ebegin "Loading ${iptables_name} state and starting firewall" ${iptables_bin}-restore ${SAVE_RESTORE_OPTIONS} < "${iptables_save}" eend $? } stop() { if [ "${SAVE_ON_STOP}" = "yes" ] ; then save || return 1 fi checkkernel || return 1 ebegin "Stopping firewall" local a for a in $(cat ${iptables_proc}) ; do set_table_policy $a ACCEPT ${iptables_bin} -w -F -t $a ${iptables_bin} -w -X -t $a done eend $? } reload() { checkkernel || return 1 checkrules || return 1 ebegin "Flushing firewall" local a for a in $(cat ${iptables_proc}) ; do ${iptables_bin} -w -F -t $a ${iptables_bin} -w -X -t $a done eend $? start } checkrules() { ebegin "Checking rules" ${iptables_bin}-restore --test ${SAVE_RESTORE_OPTIONS} < "${iptables_save}" eend $? } check() { # Short name for users of init.d script. checkrules } save() { ebegin "Saving ${iptables_name} state" checkpath -q -d "$(dirname "${iptables_save}")" checkpath -q -m 0600 -f "${iptables_save}" ${iptables_bin}-save ${SAVE_RESTORE_OPTIONS} > "${iptables_save}" eend $? } panic() { checkkernel || return 1 if service_started ${iptables_name}; then rc-service ${iptables_name} stop fi local a ebegin "Dropping all packets" for a in $(cat ${iptables_proc}) ; do ${iptables_bin} -w -F -t $a ${iptables_bin} -w -X -t $a set_table_policy $a DROP done eend $? }