testing: Added swanctl/shunt-policies-nat-rw
This commit is contained in:
Andreas Steffen
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The roadwarriors <b>alice</b> and <b>venus</b> sitting behind the NAT router <b>moon</b> set up
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tunnels to gateway <b>sun</b>. They tunnel all traffic to the gateway. In order to prevent
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local traffic within the <b>10.1.0.0/16</b> subnet to enter the tunnel, both set up a <b>local-net</b>
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shunt policy with <b>mode = pass</b>.
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<p/>
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In order to test the tunnel, the NAT-ed hosts <b>alice</b> and <b>venus</b>
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ping each other and the client <b>bob</b> behind the gateway <b>sun</b>.
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alice::swanctl --list-pols --raw 2> /dev/null::local-net.*mode=PASS local-ts=\[10.1.0.0/16] remote-ts=\[10.1.0.0/16::YES
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venus::swanctl --list-pols --raw 2> /dev/null::local-net.*mode=PASS local-ts=\[10.1.0.0/16] remote-ts=\[10.1.0.0/16::YES
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alice::ping -c 1 PH_IP_BOB::64 bytes from PH_IP_BOB: icmp_req=1::YES
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alice::ping -c 1 PH_IP_VENUS::64 bytes from PH_IP_VENUS: icmp_req=1::YES
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venus::ping -c 1 PH_IP_BOB::64 bytes from PH_IP_BOB: icmp_req=1::YES
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venus::ping -c 1 PH_IP_ALICE::64 bytes from PH_IP_ALICE: icmp_req=1::YES
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alice::swanctl --list-sas --raw 2> /dev/null::nat-t.*version=2 state=ESTABLISHED local-host=10.1.0.10 local-id=alice@strongswan.org remote-host=192.168.0.2 remote-id=sun.strongswan.org initiator=yes.*nat-local=yes nat-any=yes encr-alg=AES_CBC encr-keysize=128 integ-alg=HMAC_SHA2_256_128 prf-alg=PRF_HMAC_SHA2_256 dh-group=MODP_3072.*local-vips=\[10.3.0.1] child-sas.*nat-t.*state=INSTALLED mode=TUNNEL protocol=ESP encap=yes.*encr-alg=AES_GCM_16 encr-keysize=128.*local-ts=\[10.3.0.1/32] remote-ts=\[0.0.0.0/0]::YES
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venus::swanctl --list-sas --raw 2> /dev/null::nat-t.*version=2 state=ESTABLISHED local-host=10.1.0.20 local-id=venus.strongswan.org remote-host=192.168.0.2 remote-id=sun.strongswan.org initiator=yes.*nat-local=yes nat-any=yes encr-alg=AES_CBC encr-keysize=128 integ-alg=HMAC_SHA2_256_128 prf-alg=PRF_HMAC_SHA2_256 dh-group=MODP_3072.*local-vips=\[10.3.0.2] child-sas.*nat-t.*state=INSTALLED mode=TUNNEL protocol=ESP encap=yes.*encr-alg=AES_GCM_16 encr-keysize=128.*local-ts=\[10.3.0.2/32] remote-ts=\[0.0.0.0/0]::YES
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sun::swanctl --list-sas --ike-id 1 --raw 2> /dev/null::nat-t.*version=2 state=ESTABLISHED local-host=192.168.0.2 local-id=sun.strongswan.org remote-host=192.168.0.1 remote-id=alice@strongswan.org.*nat-remote=yes nat-any=yes encr-alg=AES_CBC encr-keysize=128 integ-alg=HMAC_SHA2_256_128 prf-alg=PRF_HMAC_SHA2_256 dh-group=MODP_3072.*remote-vips=\[10.3.0.1] child-sas.*nat-t.*state=INSTALLED mode=TUNNEL protocol=ESP encap=yes.*encr-alg=AES_GCM_16 encr-keysize=128.*local-ts=\[0.0.0.0/0] remote-ts=\[10.3.0.1/32]::YES
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sun::swanctl --list-sas --ike-id 2 --raw 2> /dev/null::nat-t.*version=2 state=ESTABLISHED local-host=192.168.0.2 local-id=sun.strongswan.org remote-host=192.168.0.1 remote-id=venus.strongswan.org.*nat-remote=yes nat-any=yes encr-alg=AES_CBC encr-keysize=128 integ-alg=HMAC_SHA2_256_128 prf-alg=PRF_HMAC_SHA2_256 dh-group=MODP_3072.*remote-vips=\[10.3.0.2] child-sas.*nat-t.*state=INSTALLED mode=TUNNEL protocol=ESP encap=yes.*encr-alg=AES_GCM_16 encr-keysize=128.*local-ts=\[0.0.0.0/0] remote-ts=\[10.3.0.2/32]::YES
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moon::tcpdump::IP moon.strongswan.org.* > sun.strongswan.org.4500: UDP-encap: ESP::YES
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moon::tcpdump::IP sun.strongswan.org.4500 > moon.strongswan.org.*: UDP-encap: ESP::YES
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alice::tcpdump::IP alice.strongswan.org > venus.strongswan.org: ICMP::YES
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alice::tcpdump::IP venus.strongswan.org > alice.strongswan.org: ICMP::YES
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# /etc/strongswan.conf - strongSwan configuration file
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charon {
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load = random nonce aes sha1 sha2 pem pkcs1 gmp x509 curl revocation hmac vici kernel-netlink socket-default updown
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start-scripts {
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creds = /usr/local/sbin/swanctl --load-creds
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conns = /usr/local/sbin/swanctl --load-conns
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}
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keep_alive = 5
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}
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connections {
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nat-t {
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remote_addrs = 192.168.0.2
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vips = 0.0.0.0
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local {
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auth = pubkey
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certs = aliceCert.pem
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id = alice@strongswan.org
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}
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remote {
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auth = pubkey
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id = sun.strongswan.org
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}
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children {
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nat-t {
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remote_ts = 0.0.0.0/0
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updown = /usr/local/libexec/ipsec/_updown iptables
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esp_proposals = aes128gcm128-modp3072
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}
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}
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version = 2
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proposals = aes128-sha256-modp3072
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}
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local-net {
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children {
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local-net {
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local_ts = 10.1.0.0/16
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remote_ts = 10.1.0.0/16
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mode = pass
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start_action = trap
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}
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}
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}
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}
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*filter
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# default policy is DROP
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-P INPUT DROP
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-P OUTPUT DROP
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-P FORWARD DROP
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# allow IKE
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-A INPUT -i eth0 -p udp --dport 500 -j ACCEPT
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-A OUTPUT -o eth0 -p udp --sport 500 -j ACCEPT
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# allow MobIKE
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-A INPUT -i eth0 -p udp --dport 4500 -j ACCEPT
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-A OUTPUT -o eth0 -p udp --sport 4500 -j ACCEPT
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# allow ssh
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-A INPUT -p tcp --dport 22 -j ACCEPT
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-A OUTPUT -p tcp --sport 22 -j ACCEPT
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# allow crl fetch from winnetou
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-A INPUT -i eth0 -p tcp --sport 80 -s PH_IP_WINNETOU -j ACCEPT
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-A OUTPUT -o eth0 -p tcp --dport 80 -d PH_IP_WINNETOU -j ACCEPT
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COMMIT
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# /etc/strongswan.conf - strongSwan configuration file
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charon {
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load = random nonce aes sha1 sha2 pem pkcs1 gmp x509 curl revocation hmac vici kernel-netlink socket-default updown
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start-scripts {
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creds = /usr/local/sbin/swanctl --load-creds
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pools = /usr/local/sbin/swanctl --load-pools
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conns = /usr/local/sbin/swanctl --load-conns
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}
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}
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connections {
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nat-t {
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local_addrs = 192.168.0.2
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pools = rw_pool
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local {
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auth = pubkey
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certs = sunCert.pem
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id = sun.strongswan.org
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}
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remote {
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auth = pubkey
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}
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children {
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nat-t {
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local_ts = 0.0.0.0/0
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updown = /usr/local/libexec/ipsec/_updown iptables
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esp_proposals = aes128gcm128-modp3072
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}
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}
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version = 2
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proposals = aes128-sha256-modp3072
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}
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}
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pools {
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rw_pool {
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addrs = 10.3.0.0/28
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}
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}
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# /etc/strongswan.conf - strongSwan configuration file
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charon {
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load = random nonce aes sha1 sha2 pem pkcs1 gmp x509 curl revocation hmac vici kernel-netlink socket-default updown
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start-scripts {
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creds = /usr/local/sbin/swanctl --load-creds
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conns = /usr/local/sbin/swanctl --load-conns
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}
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keep_alive = 5
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}
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connections {
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nat-t {
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remote_addrs = 192.168.0.2
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vips = 0.0.0.0
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local {
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auth = pubkey
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certs = venusCert.pem
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id = venus.strongswan.org
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}
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remote {
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auth = pubkey
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id = sun.strongswan.org
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}
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children {
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nat-t {
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remote_ts = 0.0.0.0/0
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updown = /usr/local/libexec/ipsec/_updown iptables
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esp_proposals = aes128gcm128-modp3072
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}
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}
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version = 2
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proposals = aes128-sha256-modp3072
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}
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local-net {
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children {
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local-net {
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local_ts = 10.1.0.0/16
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remote_ts = 10.1.0.0/16
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mode = pass
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start_action = trap
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}
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}
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}
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}
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alice::service charon stop 2> /dev/null
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venus::service charon stop 2> /dev/null
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sun::service charon stop 2> /dev/null
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sun::iptables-restore < /etc/iptables.flush
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moon::iptables -t nat -F
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sun::iptables-restore < /etc/iptables.rules
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moon::iptables -t nat -A POSTROUTING -o eth0 -s 10.1.0.0/16 -p udp -j SNAT --to-source PH_IP_MOON:1024-1100
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moon::iptables -t nat -A POSTROUTING -o eth0 -s 10.1.0.0/16 -p tcp -j SNAT --to-source PH_IP_MOON:2000-2100
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sun::service charon start 2> /dev/null
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alice::service charon start 2> /dev/null
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venus::service charon start 2> /dev/null
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sun::expect-connection nat-t
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alice::expect-connection nat-t
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venus::expect-connection nat-t
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alice::swanctl --initiate --child nat-t 2> /dev/null
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venus::swanctl --initiate --child nat-t 2> /dev/null
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#!/bin/bash
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#
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# This configuration file provides information on the
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# guest instances used for this test
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# All guest instances that are required for this test
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#
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VIRTHOSTS="alice venus moon winnetou sun bob"
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# Corresponding block diagram
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#
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DIAGRAM="a-v-m-w-s-b.png"
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# Guest instances on which tcpdump is to be started
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#
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TCPDUMPHOSTS="alice moon"
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# Guest 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 venus sun"
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# charon controlled by swanctl
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#
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SWANCTL=1
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