expanded ikev2/ip-two-pools-db to a spoke-to-hub network using virtual IP addresses
This commit is contained in:
Andreas Steffen
@@ -1,9 +1,14 @@
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The hosts <b>alice</b> and <b>carol</b> set up a tunnel connection each to gateway <b>moon</b>.
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Both hosts request a <b>virtual IP</b> via the IKEv2 configuration payload by using the
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<b>leftsourceip=%config</b> parameter. Gateway <b>moon</b> assigns virtual IP
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addresses from a pool named <b>extpool</b> [10.3.0.1..10.3.255.254] to hosts connecting
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The hosts <b>alice</b>, <b>venus</b>, <b>carol</b>, and <b>dave</b> set up tunnel connections
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to gateway <b>moon</b> in a spoke-to-hub fashion. Each host requests a <b>virtual IP</b>
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with the <b>leftsourceip=%config</b> parameter. Gateway <b>moon</b> assigns virtual
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IP addresses from a pool named <b>extpool</b> [10.3.0.1..10.3.255.254] to hosts connecting
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to the <b>eth0</b> (PH_IP_MOON) interface and virtual IP addresses from a pool named <b>intpool</b>
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[10.4.0.1..10.4.255.254] to hosts connecting to the <b>eth1</b> (PH_IP_MOON1) interface.
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<p>
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Thus <b>carol</b> is assigned <b>PH_IP_CAROL1</b> whereas <b>alice</b> gets <b>10.4.0.1</b> and
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both ping the gateway <b>moon</b>.
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Thus <b>carol</b> and <b>dave</b> are assigned <b>PH_IP_CAROL1</b> and <b>PH_IP_DAVE1</b>,
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respectively, whereas <b>alice</b> and <b>venus</b> get <b>10.4.0.1</b> and <b>10.4.0.2</b>,
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respectively.
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<p>
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By defining the composite IPsec SA: <b>rightsubnet=10.3.0.0/16,10.4.0.0/16</b>, each of the four
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hosts can securely reach any other host via the central hub <b>moon</b>. This is
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demonstrated by <b>alice</b> and <b>dave</b> pinging the assigned virtual IP addresses
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of <b>carol</b> and <b>venus</b>.
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@@ -1,14 +1,31 @@
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carol::ipsec status::home.*INSTALLED::YES
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dave::ipsec status::home.*INSTALLED::YES
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alice::ipsec status::home.*INSTALLED::YES
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venus::ipsec status::home.*INSTALLED::YES
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moon::ipsec status::ext.*ESTABLISHED.*[email protected]::YES
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moon::ipsec status::ext.*ESTABLISHED.*[email protected]::YES
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moon::ipsec status::int.*ESTABLISHED.*[email protected]::YES
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moon::ipsec pool --status::extpool.*10.3.0.1.*10.3.255.254.*48h.*1::YES
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moon::ipsec pool --status::intpool.*10.4.0.1.*10.4.255.254.*static.*1::YES
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moon::ipsec status::int.*ESTABLISHED.*venus.strongswan.org::YES
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moon::ipsec pool --status::extpool.*10.3.0.1.*10.3.255.254.*48h.*2::YES
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moon::ipsec pool --status::intpool.*10.4.0.1.*10.4.255.254.*static.*2::YES
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moon::ipsec pool --leases --filter pool=extpool,addr=10.3.0.1,[email protected]::online::YES
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moon::ipsec pool --leases --filter pool=extpool,addr=10.3.0.2,[email protected]::online::YES
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moon::ipsec pool --leases --filter pool=intpool,addr=10.4.0.1,[email protected]::online::YES
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carol::ping -c 1 PH_IP_MOON::64 bytes from PH_IP_MOON: icmp_seq=1::YES
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alice::ping -c 1 PH_IP_MOON1::64 bytes from PH_IP_MOON1: icmp_seq=1::YES
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carol::tcpdump::IP carol.strongswan.org > moon.strongswan.org: ESP::YES
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carol::tcpdump::IP moon.strongswan.org > carol.strongswan.org: ESP::YES
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moon::ipsec pool --leases --filter pool=intpool,addr=10.4.0.2,id=venus.strongswan.org::online::YES
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carol::cat /var/log/daemon.log::installing new virtual IP 10.3.0.1::YES
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dave::cat /var/log/daemon.log::installing new virtual IP 10.3.0.2::YES
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alice::cat /var/log/daemon.log::installing new virtual IP 10.4.0.1::YES
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venus::cat /var/log/daemon.log::installing new virtual IP 10.4.0.2::YES
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alice::ping -c 1 PH_IP_CAROL1::64 bytes from PH_IP_CAROL1: icmp_seq=1::YES
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dave::ping -c 1 PH_IP_CAROL1::64 bytes from PH_IP_CAROL1: icmp_seq=1::YES
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alice::ping -c 1 10.4.0.2::64 bytes from 10.4.0.2: icmp_seq=1::YES
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dave::ping -c 1 10.4.0.2::64 bytes from 10.4.0.2: icmp_seq=1::YES
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alice::tcpdump::IP alice.strongswan.org > moon1.strongswan.org: ESP::YES
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alice::tcpdump::IP moon1.strongswan.org > alice.strongswan.org: ESP::YES
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dave::tcpdump::IP dave.strongswan.org > moon.strongswan.org: ESP::YES
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dave::tcpdump::IP moon.strongswan.org > dave.strongswan.org: ESP::YES
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carol::tcpdump::IP moon.strongswan.org > carol.strongswan.org: ESP::YES
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carol::tcpdump::IP carol.strongswan.org > moon.strongswan.org: ESP::YES
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venus::tcpdump::IP moon1.strongswan.org > venus.strongswan.org: ESP::YES
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venus::tcpdump::IP venus.strongswan.org > moon1.strongswan.org: ESP::YES
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@@ -20,4 +20,5 @@ conn home
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leftfirewall=yes
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right=PH_IP_MOON1
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[email protected]
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rightsubnet=10.3.0.0/16,10.4.0.0/16
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auto=add
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@@ -20,4 +20,5 @@ conn home
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leftfirewall=yes
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right=PH_IP_MOON
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[email protected]
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rightsubnet=10.3.0.0/16,10.4.0.0/16
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auto=add
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@@ -0,0 +1,24 @@
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# /etc/ipsec.conf - strongSwan IPsec configuration file
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config setup
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crlcheckinterval=180
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strictcrlpolicy=no
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plutostart=no
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conn %default
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ikelifetime=60m
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keylife=20m
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rekeymargin=3m
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keyingtries=1
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keyexchange=ikev2
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conn home
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left=PH_IP_DAVE
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leftsourceip=%config
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leftcert=daveCert.pem
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[email protected]
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leftfirewall=yes
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right=PH_IP_MOON
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[email protected]
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rightsubnet=10.3.0.0/16,10.4.0.0/16
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auto=add
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@@ -0,0 +1,5 @@
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# /etc/strongswan.conf - strongSwan configuration file
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charon {
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load = curl aes des sha1 sha2 md5 gmp random x509 pubkey hmac xcbc stroke
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}
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@@ -18,10 +18,12 @@ conn %default
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conn int
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left=PH_IP_MOON1
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leftsubnet=10.3.0.0/16,10.4.0.0/16
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rightsourceip=%intpool
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auto=add
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conn ext
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left=PH_IP_MOON
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leftsubnet=10.3.0.0/16,10.4.0.0/16
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rightsourceip=%extpool
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auto=add
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@@ -0,0 +1,78 @@
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#!/sbin/runscript
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# Copyright 1999-2004 Gentoo Foundation
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# Distributed under the terms of the GNU General Public License v2
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opts="start stop reload"
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depend() {
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before net
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need logger
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}
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start() {
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ebegin "Starting firewall"
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# default policy is DROP
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/sbin/iptables -P INPUT DROP
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/sbin/iptables -P OUTPUT DROP
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/sbin/iptables -P FORWARD DROP
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# allow ESP
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iptables -A INPUT -i eth0 -p 50 -j ACCEPT
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iptables -A OUTPUT -o eth0 -p 50 -j ACCEPT
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# allow IKE
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iptables -A INPUT -i eth0 -p udp --sport 500 --dport 500 -j ACCEPT
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iptables -A OUTPUT -o eth0 -p udp --dport 500 --sport 500 -j ACCEPT
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# allow MOBIKE
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iptables -A INPUT -i eth0 -p udp --sport 4500 --dport 4500 -j ACCEPT
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iptables -A OUTPUT -o eth0 -p udp --dport 4500 --sport 4500 -j ACCEPT
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# allow crl fetch from winnetou
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iptables -A INPUT -i eth0 -p tcp --sport 80 -s PH_IP_WINNETOU -j ACCEPT
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iptables -A OUTPUT -o eth0 -p tcp --dport 80 -d PH_IP_WINNETOU -j ACCEPT
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# allow ssh
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iptables -A INPUT -p tcp --dport 22 -j ACCEPT
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iptables -A OUTPUT -p tcp --sport 22 -j ACCEPT
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eend $?
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}
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stop() {
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ebegin "Stopping firewall"
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for a in `cat /proc/net/ip_tables_names`; do
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/sbin/iptables -F -t $a
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/sbin/iptables -X -t $a
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if [ $a == nat ]; then
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/sbin/iptables -t nat -P PREROUTING ACCEPT
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/sbin/iptables -t nat -P POSTROUTING ACCEPT
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/sbin/iptables -t nat -P OUTPUT ACCEPT
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elif [ $a == mangle ]; then
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/sbin/iptables -t mangle -P PREROUTING ACCEPT
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/sbin/iptables -t mangle -P INPUT ACCEPT
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/sbin/iptables -t mangle -P FORWARD ACCEPT
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/sbin/iptables -t mangle -P OUTPUT ACCEPT
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/sbin/iptables -t mangle -P POSTROUTING ACCEPT
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elif [ $a == filter ]; then
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/sbin/iptables -t filter -P INPUT ACCEPT
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/sbin/iptables -t filter -P FORWARD ACCEPT
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/sbin/iptables -t filter -P OUTPUT ACCEPT
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fi
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done
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eend $?
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}
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reload() {
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ebegin "Flushing firewall"
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for a in `cat /proc/net/ip_tables_names`; do
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/sbin/iptables -F -t $a
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/sbin/iptables -X -t $a
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done;
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eend $?
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start
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}
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@@ -0,0 +1,24 @@
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# /etc/ipsec.conf - strongSwan IPsec configuration file
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config setup
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crlcheckinterval=180
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strictcrlpolicy=no
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plutostart=no
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conn %default
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ikelifetime=60m
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keylife=20m
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rekeymargin=3m
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keyingtries=1
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keyexchange=ikev2
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conn home
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left=%defaultroute
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leftsourceip=%config
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leftcert=venusCert.pem
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[email protected]
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leftfirewall=yes
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right=PH_IP_MOON1
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[email protected]
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rightsubnet=10.3.0.0/16,10.4.0.0/16
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auto=add
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@@ -0,0 +1,5 @@
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# /etc/strongswan.conf - strongSwan configuration file
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charon {
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load = curl aes des sha1 sha2 md5 gmp random x509 pubkey hmac xcbc stroke
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}
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@@ -1,9 +1,15 @@
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alice::ipsec stop
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venus::ipsec stop
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moon::ipsec stop
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carol::ipsec stop
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dave::ipsec stop
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alice::/etc/init.d/iptables stop 2> /dev/null
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venus::/etc/init.d/iptables stop 2> /dev/null
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moon::/etc/init.d/iptables stop 2> /dev/null
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carol::/etc/init.d/iptables stop 2> /dev/null
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alice::/etc/init.d/iptables stop 2> /dev/null
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dave::/etc/init.d/iptables stop 2> /dev/null
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moon::ip route del 10.3.0.0/16 via PH_IP_MOON
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moon::ip route del 10.4.0.0/16 via PH_IP_MOON1
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moon::conntrack -F
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moon::ipsec pool --del extpool
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moon::ipsec pool --del intpool
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@@ -2,13 +2,21 @@ moon::cat /etc/ipsec.d/tables.sql > /etc/ipsec.d/ipsec.sql
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moon::cat /etc/ipsec.d/ipsec.sql | sqlite3 /etc/ipsec.d/ipsec.db
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moon::ipsec pool --add extpool --start 10.3.0.1 --end 10.3.255.254 --timeout 48
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moon::ipsec pool --add intpool --start 10.4.0.1 --end 10.4.255.254 --timeout 0
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moon::ip route add 10.3.0.0/16 via PH_IP_MOON
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moon::ip route add 10.4.0.0/16 via PH_IP_MOON1
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alice::/etc/init.d/iptables start 2> /dev/null
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venus::/etc/init.d/iptables start 2> /dev/null
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moon::/etc/init.d/iptables start 2> /dev/null
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carol::/etc/init.d/iptables start 2> /dev/null
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alice::/etc/init.d/iptables start 2> /dev/null
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carol::ipsec start
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moon::ipsec start
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dave::/etc/init.d/iptables start 2> /dev/null
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alice::ipsec start
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venus::ipsec start
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carol::ipsec start
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dave::ipsec start
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moon::ipsec start
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carol::sleep 2
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carol::ipsec up home
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dave::ipsec up home
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alice::ipsec up home
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venus::ipsec up home
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alice::sleep 1
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@@ -5,17 +5,17 @@
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# All UML instances that are required for this test
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#
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UMLHOSTS="alice moon carol winnetou"
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UMLHOSTS="alice moon carol winnetou dave"
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# Corresponding block diagram
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#
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DIAGRAM="a-m-c-w.png"
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DIAGRAM="a-v-m-c-w-d.png"
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# UML instances on which tcpdump is to be started
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#
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TCPDUMPHOSTS="alice carol"
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TCPDUMPHOSTS="alice venus carol dave"
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# UML instances on which IPsec is started
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# Used for IPsec logging purposes
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#
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IPSECHOSTS="alice moon carol"
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IPSECHOSTS="alice venus moon carol dave"
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