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corrected description of shunt-policies scenario

This commit is contained in:
Andreas Steffen 2011-07-05 22:07:42 +02:00
parent 06b5b61838
commit 1f3b5c7778
11 changed files with 226 additions and 2 deletions
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4
testing/tests/ikev2/shunt-policies/description.txt
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@ -7,5 +7,5 @@ by adding <b>install_routes = no</b> to the charon section of <b>strongswan.conf
<p/>
In order to demonstrate the use of <b>type=drop</b> shunt policies, the
<b>venus-icmp</b> connection prevents ICMP traffic to and from <b>venus</b>
to use the IPsec tunnel by dropping such packets. Thanks to the <b>local-net</b>
pass shunt, <b>venus</b> and <b>moon</b> can still ping each other, though.
to use the IPsec tunnel by dropping such packets. Since this policy does not
apply to the localnet, <b>venus</b> and <b>moon</b> can still ping each other.

11
testing/tests/pfkey/shunt-policies/description.txt Normal file
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@ -0,0 +1,11 @@
All traffic from the clients <b>alice</b> and <b>venus</b> is tunneled
by default gateway <b>moon</b> to VPN gateway <b>sun</b>. In order to
prevent local traffic within the <b>10.1.0.0/16</b> subnet to enter the
tunnel, a <b>local-net</b> shunt policy with <b>type=pass</b> is set up.
In order for the shunt to work, automatic route insertion must be disabled
by adding <b>install_routes = no</b> to the charon section of <b>strongswan.conf</b>.
<p/>
In order to demonstrate the use of <b>type=drop</b> shunt policies, the
<b>venus-icmp</b> connection prevents ICMP traffic to and from <b>venus</b>
to use the IPsec tunnel by dropping such packets. Since this policy does not
apply to the local net, <b>venus</b> and <b>moon</b> can still ping each other.

16
testing/tests/pfkey/shunt-policies/evaltest.dat Normal file
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@ -0,0 +1,16 @@
moon::ipsec statusall::net-net.*ESTABLISHED::YES
sun::ipsec statusall::net-net.*ESTABLISHED::YES
alice::ping -c 1 PH_IP_BOB::64 bytes from PH_IP_BOB: icmp_seq=1::YES
alice::ping -c 1 PH_IP_MOON1::64 bytes from PH_IP_MOON1: icmp_seq=1::YES
venus::ping -c 1 PH_IP_BOB::64 bytes from PH_IP_BOB: icmp_seq=1::NO
venus::ping -c 1 PH_IP_MOON1::64 bytes from PH_IP_MOON1: icmp_seq=1::YES
moon::ping -c 1 -I PH_IP_MOON1 PH_IP_BOB::64 bytes from PH_IP_BOB: icmp_seq=1::YES
moon::ping -c 1 PH_IP_ALICE::64 bytes from PH_IP_ALICE: icmp_seq=1::YES
moon::ping -c 1 PH_IP_VENUS::64 bytes from PH_IP_VENUS: icmp_seq=1::YES
bob::ping -c 1 PH_IP_ALICE::64 bytes from PH_IP_ALICE: icmp_seq=1::YES
bob::ping -c 1 PH_IP_MOON1::64 bytes from PH_IP_MOON1: icmp_seq=1::YES
bob::ping -c 1 PH_IP_VENUS::64 bytes from PH_IP_VENUS: icmp_seq=1::NO
sun::tcpdump::IP moon.strongswan.org > sun.strongswan.org: ESP::YES
sun::tcpdump::IP sun.strongswan.org > moon.strongswan.org: ESP::YES
venus::ssh PH_IP_BOB hostname::bob::YES
bob::ssh PH_IP_VENUS hostname::venus::YES

84
testing/tests/pfkey/shunt-policies/hosts/moon/etc/init.d/iptables Executable file
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@ -0,0 +1,84 @@
#!/sbin/runscript
# Copyright 1999-2004 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
opts="start stop reload"
depend() {
before net
need logger
}
start() {
ebegin "Starting firewall"
# enable IP forwarding
echo 1 > /proc/sys/net/ipv4/ip_forward
# default policy is DROP
/sbin/iptables -P INPUT DROP
/sbin/iptables -P OUTPUT DROP
/sbin/iptables -P FORWARD DROP
# allow esp
iptables -A INPUT -i eth0 -p 50 -j ACCEPT
iptables -A OUTPUT -o eth0 -p 50 -j ACCEPT
# allow IKE
iptables -A INPUT -i eth0 -p udp --sport 500 --dport 500 -j ACCEPT
iptables -A OUTPUT -o eth0 -p udp --dport 500 --sport 500 -j ACCEPT
# allow MobIKE
iptables -A INPUT -i eth0 -p udp --sport 4500 --dport 4500 -j ACCEPT
iptables -A OUTPUT -o eth0 -p udp --dport 4500 --sport 4500 -j ACCEPT
# allow crl fetch from winnetou
iptables -A INPUT -i eth0 -p tcp --sport 80 -s PH_IP_WINNETOU -j ACCEPT
iptables -A OUTPUT -o eth0 -p tcp --dport 80 -d PH_IP_WINNETOU -j ACCEPT
# allow ssh
iptables -A INPUT -p tcp --dport 22 -j ACCEPT
iptables -A OUTPUT -p tcp --sport 22 -j ACCEPT
# allow icmp in local net
iptables -A INPUT -i eth1 -p icmp -j ACCEPT
iptables -A OUTPUT -o eth1 -p icmp -j ACCEPT
eend $?
}
stop() {
ebegin "Stopping firewall"
for a in `cat /proc/net/ip_tables_names`; do
/sbin/iptables -F -t $a
/sbin/iptables -X -t $a
if [ $a == nat ]; then
/sbin/iptables -t nat -P PREROUTING ACCEPT
/sbin/iptables -t nat -P POSTROUTING ACCEPT
/sbin/iptables -t nat -P OUTPUT ACCEPT
elif [ $a == mangle ]; then
/sbin/iptables -t mangle -P PREROUTING ACCEPT
/sbin/iptables -t mangle -P INPUT ACCEPT
/sbin/iptables -t mangle -P FORWARD ACCEPT
/sbin/iptables -t mangle -P OUTPUT ACCEPT
/sbin/iptables -t mangle -P POSTROUTING ACCEPT
elif [ $a == filter ]; then
/sbin/iptables -t filter -P INPUT ACCEPT
/sbin/iptables -t filter -P FORWARD ACCEPT
/sbin/iptables -t filter -P OUTPUT ACCEPT
fi
done
eend $?
}
reload() {
ebegin "Flushing firewall"
for a in `cat /proc/net/ip_tables_names`; do
/sbin/iptables -F -t $a
/sbin/iptables -X -t $a
done;
eend $?
start
}

43
testing/tests/pfkey/shunt-policies/hosts/moon/etc/ipsec.conf Executable file
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@ -0,0 +1,43 @@
# /etc/ipsec.conf - strongSwan IPsec configuration file
config setup
crlcheckinterval=180
strictcrlpolicy=no
plutostart=no
conn %default
ikelifetime=60m
keylife=20m
rekeymargin=3m
keyingtries=1
keyexchange=ikev2
mobike=no
conn local-net
leftsubnet=10.1.0.0/16
rightsubnet=10.1.0.0/16
authby=never
type=pass
auto=route
conn venus-icmp
leftsubnet=10.1.0.20/32
rightsubnet=0.0.0.0/0
leftprotoport=icmp
rightprotoport=icmp
leftauth=any
rightauth=any
type=drop
auto=route
conn net-net
left=PH_IP_MOON
leftcert=moonCert.pem
leftid=@moon.strongswan.org
leftsubnet=10.1.0.0/16
leftfirewall=yes
lefthostaccess=yes
right=PH_IP_SUN
rightid=@sun.strongswan.org
rightsubnet=0.0.0.0/0
auto=add

7
testing/tests/pfkey/shunt-policies/hosts/moon/etc/strongswan.conf Normal file
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@ -0,0 +1,7 @@
# /etc/strongswan.conf - strongSwan configuration file
charon {
load = curl aes des sha1 sha2 md5 pem pkcs1 gmp random x509 revocation hmac xcbc stroke kernel-pfkey kernel-netlink socket-default updown
multiple_authentication = no
install_routes = no
}

25
testing/tests/pfkey/shunt-policies/hosts/sun/etc/ipsec.conf Executable file
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@ -0,0 +1,25 @@
# /etc/ipsec.conf - strongSwan IPsec configuration file
config setup
crlcheckinterval=180
strictcrlpolicy=no
plutostart=no
conn %default
ikelifetime=60m
keylife=20m
rekeymargin=3m
keyingtries=1
keyexchange=ikev2
mobike=no
conn net-net
left=PH_IP_SUN
leftcert=sunCert.pem
leftid=@sun.strongswan.org
leftsubnet=0.0.0.0/0
leftfirewall=yes
right=PH_IP_MOON
rightid=@moon.strongswan.org
rightsubnet=10.1.0.0/16
auto=add

6
testing/tests/pfkey/shunt-policies/hosts/sun/etc/strongswan.conf Normal file
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@ -0,0 +1,6 @@
# /etc/strongswan.conf - strongSwan configuration file
charon {
load = curl aes des sha1 sha2 md5 pem pkcs1 gmp random x509 revocation hmac xcbc stroke kernel-pfkey kernel-netlink socket-default updown
multiple_authentication = no
}

5
testing/tests/pfkey/shunt-policies/posttest.dat Normal file
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@ -0,0 +1,5 @@
moon::ipsec stop
sun::ipsec stop
moon::/etc/init.d/iptables stop 2> /dev/null
sun::/etc/init.d/iptables stop 2> /dev/null

6
testing/tests/pfkey/shunt-policies/pretest.dat Normal file
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@ -0,0 +1,6 @@
moon::/etc/init.d/iptables start 2> /dev/null
sun::/etc/init.d/iptables start 2> /dev/null
moon::ipsec start
sun::ipsec start
moon::sleep 1
moon::ipsec up net-net

21
testing/tests/pfkey/shunt-policies/test.conf Normal file
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@ -0,0 +1,21 @@
#!/bin/bash
#
# This configuration file provides information on the
# UML instances used for this test
# All UML instances that are required for this test
#
UMLHOSTS="alice moon winnetou sun bob"
# Corresponding block diagram
#
DIAGRAM="a-m-w-s-b.png"
# UML instances on which tcpdump is to be started
#
TCPDUMPHOSTS="sun"
# UML instances on which IPsec is started
# Used for IPsec logging purposes
#
IPSECHOSTS="moon sun"