diff options
Diffstat (limited to 'programs/_updown_espmark')
| -rw-r--r-- | programs/_updown_espmark/Makefile | 22 | ||||
| -rw-r--r-- | programs/_updown_espmark/_updown_espmark.8 | 18 | ||||
| -rw-r--r-- | programs/_updown_espmark/_updown_espmark.in | 452 |
3 files changed, 492 insertions, 0 deletions
diff --git a/programs/_updown_espmark/Makefile b/programs/_updown_espmark/Makefile new file mode 100644 index 000000000..bd9cd38cb --- /dev/null +++ b/programs/_updown_espmark/Makefile @@ -0,0 +1,22 @@ +# Makefile for miscelaneous programs +# Copyright (C) 2002 Michael Richardson <mcr@freeswan.org> +# +# 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. See <http://www.fsf.org/copyleft/gpl.txt>. +# +# 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. +# +# RCSID $Id: Makefile,v 1.1 2005/04/07 21:34:19 as Exp $ + +FREESWANSRCDIR=../.. +include ${FREESWANSRCDIR}/Makefile.inc + +PROGRAM=_updown_espmark +PROGRAMDIR=${LIBDIR} + +include ../Makefile.program diff --git a/programs/_updown_espmark/_updown_espmark.8 b/programs/_updown_espmark/_updown_espmark.8 new file mode 100644 index 000000000..91eaa5cb7 --- /dev/null +++ b/programs/_updown_espmark/_updown_espmark.8 @@ -0,0 +1,18 @@ +.TH _UPDOWN_ESPMARK 8 "7 Apr 2005" +.\" +.\" RCSID $Id: _updown_espmark.8,v 1.1 2005/04/07 21:34:19 as Exp $ +.\" +.SH NAME +ipsec _updown_espmark \- manages routes and firewall rules +.SH SYNOPSIS +.I _updown_espmark +is invoked by pluto when it has brought up a new connection. This script +is used to insert the appropriate routing and iptables firewall entries for +IPsec operation. The incoming ESP traffic must be marked by a static rule +in the mangle table. The default value for the mark is 50. +The interface to the script is documented in the pluto man page. +.SH "SEE ALSO" +ipsec(8), ipsec_pluto(8). +.SH HISTORY +Man page written for the Linux strongSwan project <http://www.strongswan.org/> +by Andreas Steffen. Original program written by Henry Spencer. diff --git a/programs/_updown_espmark/_updown_espmark.in b/programs/_updown_espmark/_updown_espmark.in new file mode 100644 index 000000000..3627d470d --- /dev/null +++ b/programs/_updown_espmark/_updown_espmark.in @@ -0,0 +1,452 @@ +#! /bin/sh +# iproute2 version, default updown script +# +# Copyright (C) 2003-2004 Nigel Meteringham +# Copyright (C) 2003-2004 Tuomo Soini +# Copyright (C) 2002-2004 Michael Richardson +# Copyright (C) 2005 Andreas Steffen <andreas.steffen@strongsec.com> +# +# 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. See <http://www.fsf.org/copyleft/gpl.txt>. +# +# 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. +# +# RCSID $Id: _updown_espmark.in,v 1.4 2005/09/14 14:33:05 as Exp $ + + + +# CAUTION: Installing a new version of strongSwan will install a new +# copy of this script, wiping out any custom changes you make. If +# you need changes, make a copy of this under another name, and customize +# that, and use the (left/right)updown parameters in ipsec.conf to make +# FreeS/WAN use yours instead of this default one. + +# things that this script gets (from ipsec_pluto(8) man page) +# +# +# PLUTO_VERSION +# indicates what version of this interface is being +# used. This document describes version 1.1. This +# is upwardly compatible with version 1.0. +# +# PLUTO_VERB +# specifies the name of the operation to be performed +# (prepare-host, prepare-client, up-host, up-client, +# down-host, or down-client). If the address family +# for security gateway to security gateway communica +# tions is IPv6, then a suffix of -v6 is added to the +# verb. +# +# PLUTO_CONNECTION +# is the name of the connection for which we are +# routing. +# +# PLUTO_NEXT_HOP +# is the next hop to which packets bound for the peer +# must be sent. +# +# PLUTO_INTERFACE +# is the name of the ipsec interface to be used. +# +# PLUTO_ME +# is the IP address of our host. +# +# PLUTO_MY_ID +# is the ID of our host. +# +# PLUTO_MY_CLIENT +# is the IP address / count of our client subnet. If +# the client is just the host, this will be the +# host's own IP address / max (where max is 32 for +# IPv4 and 128 for IPv6). +# +# PLUTO_MY_CLIENT_NET +# is the IP address of our client net. If the client +# is just the host, this will be the host's own IP +# address. +# +# PLUTO_MY_CLIENT_MASK +# is the mask for our client net. If the client is +# just the host, this will be 255.255.255.255. +# +# PLUTO_MY_SOURCEIP +# if non-empty, then the source address for the route will be +# set to this IP address. +# +# PLUTO_MY_PROTOCOL +# is the IP protocol that will be transported. +# +# PLUTO_MY_PORT +# is the UDP/TCP port to which the IPsec SA is +# restricted on our side. +# +# PLUTO_PEER +# is the IP address of our peer. +# +# PLUTO_PEER_ID +# is the ID of our peer. +# +# PLUTO_PEER_CA +# is the CA which issued the cert of our peer. +# +# PLUTO_PEER_CLIENT +# is the IP address / count of the peer's client sub +# net. If the client is just the peer, this will be +# the peer's own IP address / max (where max is 32 +# for IPv4 and 128 for IPv6). +# +# PLUTO_PEER_CLIENT_NET +# is the IP address of the peer's client net. If the +# client is just the peer, this will be the peer's +# own IP address. +# +# PLUTO_PEER_CLIENT_MASK +# is the mask for the peer's client net. If the +# client is just the peer, this will be +# 255.255.255.255. +# +# PLUTO_PEER_PROTOCOL +# is the IP protocol that will be transported. +# +# PLUTO_PEER_PORT +# is the UDP/TCP port to which the IPsec SA is +# restricted on the peer side. +# + +# logging of VPN connections +# +# tag put in front of each log entry: +TAG=vpn +# +# syslog facility and priority used: +FAC_PRIO=local0.notice +# +# to create a special vpn logging file, put the following line into +# the syslog configuration file /etc/syslog.conf: +# +# local0.notice -/var/log/vpn +# + +# check interface version +case "$PLUTO_VERSION" in +1.[0]) # Older Pluto?!? Play it safe, script may be using new features. + echo "$0: obsolete interface version \`$PLUTO_VERSION'," >&2 + echo "$0: called by obsolete Pluto?" >&2 + exit 2 + ;; +1.*) ;; +*) echo "$0: unknown interface version \`$PLUTO_VERSION'" >&2 + exit 2 + ;; +esac + +# check parameter(s) +case "$1:$*" in +':') # no parameters + ;; +ipfwadm:ipfwadm) # due to (left/right)firewall; for default script only + ;; +custom:*) # custom parameters (see above CAUTION comment) + ;; +*) echo "$0: unknown parameters \`$*'" >&2 + exit 2 + ;; +esac + +# utility functions for route manipulation +# Meddling with this stuff should not be necessary and requires great care. +uproute() { + doroute add + ip route flush cache +} +downroute() { + doroute delete + ip route flush cache +} + +addsource() { + st=0 + if ! ip -o route get ${PLUTO_MY_SOURCEIP%/*} | grep -q ^local + then + it="ip addr add ${PLUTO_MY_SOURCEIP%/*}/32 dev $PLUTO_INTERFACE" + oops="`eval $it 2>&1`" + st=$? + if test " $oops" = " " -a " $st" != " 0" + then + oops="silent error, exit status $st" + fi + if test " $oops" != " " -o " $st" != " 0" + then + echo "$0: addsource \`$it' failed ($oops)" >&2 + fi + fi + return $st +} + +doroute() { + st=0 + parms="$PLUTO_PEER_CLIENT" + + parms2= + if [ -n "$PLUTO_NEXT_HOP" ] + then + parms2="via $PLUTO_NEXT_HOP" + fi + parms2="$parms2 dev $PLUTO_INTERFACE" + + if [ -z "$PLUTO_MY_SOURCEIP" ] + then + if [ -f /etc/sysconfig/defaultsource ] + then + . /etc/sysconfig/defaultsource + fi + + if [ -f /etc/conf.d/defaultsource ] + then + . /etc/conf.d/defaultsource + fi + + if [ -n "$DEFAULTSOURCE" ] + then + PLUTO_MY_SOURCEIP=$DEFAULTSOURCE + fi + fi + + parms3= + if test "$1" = "add" -a -n "$PLUTO_MY_SOURCEIP" + then + addsource + parms3="$parms3 src ${PLUTO_MY_SOURCEIP%/*}" + fi + + case "$PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK" in + "0.0.0.0/0.0.0.0") + # opportunistic encryption work around + # need to provide route that eclipses default, without + # replacing it. + it="ip route $1 0.0.0.0/1 $parms2 $parms3 && + ip route $1 128.0.0.0/1 $parms2 $parms3" + ;; + *) it="ip route $1 $parms $parms2 $parms3" + ;; + esac + oops="`eval $it 2>&1`" + st=$? + if test " $oops" = " " -a " $st" != " 0" + then + oops="silent error, exit status $st" + fi + if test " $oops" != " " -o " $st" != " 0" + then + echo "$0: doroute \`$it' failed ($oops)" >&2 + fi + return $st +} + +# define ESP mark +ESP_MARK=50 + +# add the following static rule to the INPUT chain in the mangle table +# iptables -t mangle -A INPUT -p 50 -j MARK --set-mark 50 + +# NAT traversal via UDP encapsulation is supported with the rule +# iptables -t mangle -A INPUT -p udp --dport 4500 -j MARK --set-mark 50 + +# in the presence of KLIPS and ipsecN interfaces do not use ESP mark rules +if [ `echo "$PLUTO_INTERFACE" | grep "ipsec"` ] +then + CHECK_MARK="" +else + CHECK_MARK="-m mark --mark $ESP_MARK" +fi + +# are there port numbers? +if [ "$PLUTO_MY_PORT" != 0 ] +then + S_MY_PORT="--sport $PLUTO_MY_PORT" + D_MY_PORT="--dport $PLUTO_MY_PORT" +fi +if [ "$PLUTO_PEER_PORT" != 0 ] +then + S_PEER_PORT="--sport $PLUTO_PEER_PORT" + D_PEER_PORT="--dport $PLUTO_PEER_PORT" +fi + +# the big choice +case "$PLUTO_VERB:$1" in +prepare-host:*|prepare-client:*) + # delete possibly-existing route (preliminary to adding a route) + case "$PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK" in + "0.0.0.0/0.0.0.0") + # need to provide route that eclipses default, without + # replacing it. + parms1="0.0.0.0/1" + parms2="128.0.0.0/1" + it="ip route delete $parms1 2>&1 ; ip route delete $parms2 2>&1" + oops="`ip route delete $parms1 2>&1 ; ip route delete $parms2 2>&1`" + ;; + *) + parms="$PLUTO_PEER_CLIENT" + it="ip route delete $parms 2>&1" + oops="`ip route delete $parms 2>&1`" + ;; + esac + status="$?" + if test " $oops" = " " -a " $status" != " 0" + then + oops="silent error, exit status $status" + fi + case "$oops" in + *'RTNETLINK answers: No such process'*) + # This is what route (currently -- not documented!) gives + # for "could not find such a route". + oops= + status=0 + ;; + esac + if test " $oops" != " " -o " $status" != " 0" + then + echo "$0: \`$it' failed ($oops)" >&2 + fi + exit $status + ;; +route-host:*|route-client:*) + # connection to me or my client subnet being routed + uproute + ;; +unroute-host:*|unroute-client:*) + # connection to me or my client subnet being unrouted + downroute + ;; +up-host:*) + # connection to me coming up + # If you are doing a custom version, firewall commands go here. + iptables -I INPUT 1 -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \ + -s $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $S_PEER_PORT \ + -d $PLUTO_ME $D_MY_PORT $CHECK_MARK -j ACCEPT + iptables -I OUTPUT 1 -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \ + -s $PLUTO_ME $S_MY_PORT \ + -d $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $D_PEER_PORT -j ACCEPT + # + if [ "$PLUTO_PEER_CLIENT" == "$PLUTO_PEER/32" ] + then + logger -t $TAG -p $FAC_PRIO \ + "+ `echo -e $PLUTO_PEER_ID` $PLUTO_PEER -- $PLUTO_ME" + else + logger -t $TAG -p $FAC_PRIO \ + "+ `echo -e $PLUTO_PEER_ID` $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME" + fi + ;; +down-host:*) + # connection to me going down + # If you are doing a custom version, firewall commands go here. + # connection to me going down + # If you are doing a custom version, firewall commands go here. + iptables -D INPUT -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \ + -s $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $S_PEER_PORT \ + -d $PLUTO_ME $D_MY_PORT $CHECK_MARK -j ACCEPT + iptables -D OUTPUT -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \ + -s $PLUTO_ME $S_MY_PORT \ + -d $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $D_PEER_PORT -j ACCEPT + # + if [ "$PLUTO_PEER_CLIENT" == "$PLUTO_PEER/32" ] + then + logger -t $TAG -p $FAC_PRIO -- \ + "- `echo -e $PLUTO_PEER_ID` $PLUTO_PEER -- $PLUTO_ME" + else + logger -t $TAG -p $FAC_PRIO -- \ + "- `echo -e $PLUTO_PEER_ID` $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME" + fi + ;; +up-client:) + # connection to my client subnet coming up + # If you are doing a custom version, firewall commands go here. + iptables -I FORWARD 1 -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \ + -s $PLUTO_MY_CLIENT_NET/$PLUTO_MY_CLIENT_MASK $S_MY_PORT \ + -d $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $D_PEER_PORT -j ACCEPT + iptables -I FORWARD 1 -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \ + -s $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $S_PEER_PORT \ + -d $PLUTO_MY_CLIENT_NET/$PLUTO_MY_CLIENT_MASK $D_MY_PORT \ + $CHECK_MARK -j ACCEPT + # + if [ "$PLUTO_PEER_CLIENT" == "$PLUTO_PEER/32" ] + then + logger -t $TAG -p $FAC_PRIO \ + "+ `echo -e $PLUTO_PEER_ID` $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT" + else + logger -t $TAG -p $FAC_PRIO \ + "+ `echo -e $PLUTO_PEER_ID` $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT" + fi + ;; +down-client:) + # connection to my client subnet going down + # If you are doing a custom version, firewall commands go here. + iptables -D FORWARD -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \ + -s $PLUTO_MY_CLIENT_NET/$PLUTO_MY_CLIENT_MASK $S_MY_PORT \ + -d $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $D_PEER_PORT -j ACCEPT + iptables -D FORWARD -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \ + -s $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $S_PEER_PORT \ + -d $PLUTO_MY_CLIENT_NET/$PLUTO_MY_CLIENT_MASK $D_MY_PORT \ + $CHECK_MARK -j ACCEPT + # + if [ "$PLUTO_PEER_CLIENT" == "$PLUTO_PEER/32" ] + then + logger -t $TAG -p $FAC_PRIO -- \ + "- `echo -e $PLUTO_PEER_ID` $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT" + else + logger -t $TAG -p $FAC_PRIO -- \ + "- `echo -e $PLUTO_PEER_ID` $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT" + fi + ;; +up-client:ipfwadm) + # connection to client subnet, with (left/right)firewall=yes, coming up + # This is used only by the default updown script, not by your custom + # ones, so do not mess with it; see CAUTION comment up at top. + ipfwadm -F -i accept -b -S $PLUTO_MY_CLIENT_NET/$PLUTO_MY_CLIENT_MASK \ + -D $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK + ;; +down-client:ipfwadm) + # connection to client subnet, with (left/right)firewall=yes, going down + # This is used only by the default updown script, not by your custom + # ones, so do not mess with it; see CAUTION comment up at top. + ipfwadm -F -d accept -b -S $PLUTO_MY_CLIENT_NET/$PLUTO_MY_CLIENT_MASK \ + -D $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK + ;; +# +# IPv6 +# +prepare-host-v6:*|prepare-client-v6:*) + ;; +route-host-v6:*|route-client-v6:*) + # connection to me or my client subnet being routed + #uproute_v6 + ;; +unroute-host-v6:*|unroute-client-v6:*) + # connection to me or my client subnet being unrouted + #downroute_v6 + ;; +up-host-v6:*) + # connection to me coming up + # If you are doing a custom version, firewall commands go here. + ;; +down-host-v6:*) + # connection to me going down + # If you are doing a custom version, firewall commands go here. + ;; +up-client-v6:) + # connection to my client subnet coming up + # If you are doing a custom version, firewall commands go here. + ;; +down-client-v6:) + # connection to my client subnet going down + # If you are doing a custom version, firewall commands go here. + ;; +*) echo "$0: unknown verb \`$PLUTO_VERB' or parameter \`$1'" >&2 + exit 1 + ;; +esac |