TCPDUMP

sun# tcpdump -i eth0 not port ssh and not port domain and not arp > /tmp/tcpdump.log 2>&1 &

PRE-TEST

moon# /etc/init.d/iptables start 2> /dev/null
 * Starting firewall ...                                                  [ ok ]

sun# /etc/init.d/iptables start 2> /dev/null
 * Starting firewall ...                                                  [ ok ]

moon# ipsec start
Starting strongSwan 4.2.17 IPsec [starter]...

sun# ipsec start
Starting strongSwan 4.2.17 IPsec [starter]...

moon# sleep 2

moon# ipsec up host-host
002 "host-host" #1: initiating Main Mode
104 "host-host" #1: STATE_MAIN_I1: initiate
003 "host-host" #1: ignoring Vendor ID payload [strongSwan 4.2.17]
003 "host-host" #1: received Vendor ID payload [XAUTH]
003 "host-host" #1: received Vendor ID payload [Dead Peer Detection]
106 "host-host" #1: STATE_MAIN_I2: sent MI2, expecting MR2
002 "host-host" #1: we have a cert and are sending it upon request
108 "host-host" #1: STATE_MAIN_I3: sent MI3, expecting MR3
002 "host-host" #1: Peer ID is ID_FQDN: '@sun.strongswan.org'
002 "host-host" #1: crl not found
002 "host-host" #1: certificate status unknown
002 "host-host" #1: ISAKMP SA established
004 "host-host" #1: STATE_MAIN_I4: ISAKMP SA established
002 "host-host" #2: initiating Quick Mode RSASIG+ENCRYPT+TUNNEL+PFS+UP {using isakmp#1}
112 "host-host" #2: STATE_QUICK_I1: initiate
002 "host-host" #2: sent QI2, IPsec SA established {ESP=>0xc1a89916 <0x9b888bf9}
004 "host-host" #2: STATE_QUICK_I2: sent QI2, IPsec SA established {ESP=>0xc1a89916 <0x9b888bf9}

moon# sleep 1


TEST

moon# ipsec status | grep 'host-host.*STATE_QUICK_I2.*IPsec SA established' [YES]
000 #2: "host-host" STATE_QUICK_I2 (sent QI2, IPsec SA established); EVENT_SA_REPLACE in 905s; newest IPSEC; eroute owner

sun# ipsec status | grep 'host-host.*STATE_QUICK_R2.*IPsec SA established' [YES]
000 #2: "host-host" STATE_QUICK_R2 (IPsec SA established); EVENT_SA_REPLACE in 1109s; newest IPSEC; eroute owner

moon# ping -c 1 192.168.0.2 | grep '64 bytes from 192.168.0.2: icmp_seq=1' [YES]
64 bytes from 192.168.0.2: icmp_seq=1 ttl=64 time=0.478 ms

sun# killall tcpdump

sun# cat /tmp/tcpdump.log | grep 'IP moon.strongswan.org > sun.strongswan.org: ESP' [YES]
14:38:00.113454 IP moon.strongswan.org > sun.strongswan.org: ESP(spi=0xc1a89916,seq=0x1), length 132

sun# cat /tmp/tcpdump.log | grep 'IP sun.strongswan.org > moon.strongswan.org: ESP' [YES]
14:38:00.113640 IP sun.strongswan.org > moon.strongswan.org: ESP(spi=0x9b888bf9,seq=0x1), length 132


POST-TEST

moon# ipsec stop
Stopping strongSwan IPsec...

sun# ipsec stop
Stopping strongSwan IPsec...

moon# /etc/init.d/iptables stop 2> /dev/null
 * Stopping firewall ...                                                  [ ok ]

sun# /etc/init.d/iptables stop 2> /dev/null
 * Stopping firewall ...                                                  [ ok ]