TCPDUMP

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

PRE-TEST

moon# echo 1 > /proc/sys/net/ipv4/ip_forward

carol# ipsec start
Starting strongSwan 4.3.6 IPsec [starter]...

moon# ipsec start
Starting strongSwan 4.3.6 IPsec [starter]...

carol# sleep 2

carol# ipsec up home
initiating IKE_SA home[1] to 192.168.0.1
generating IKE_SA_INIT request 0 [ SA KE No N(NATD_S_IP) N(NATD_D_IP) ]
sending packet: from 192.168.0.100[500] to 192.168.0.1[500]
received packet: from 192.168.0.1[500] to 192.168.0.100[500]
parsed IKE_SA_INIT response 0 [ SA KE No N(NATD_S_IP) N(NATD_D_IP) CERTREQ N(MULT_AUTH) ]
received cert request for "C=CH, O=Linux strongSwan, CN=strongSwan Root CA"
sending cert request for "C=CH, O=Linux strongSwan, CN=strongSwan Root CA"
authentication of 'carol@strongswan.org' (myself) with RSA signature successful
sending end entity cert "C=CH, O=Linux strongSwan, OU=Research, CN=carol@strongswan.org"
establishing CHILD_SA home
generating IKE_AUTH request 1 [ IDi CERT CERTREQ IDr AUTH N(IPCOMP_SUPP) SA TSi TSr N(MOBIKE_SUP) N(ADD_6_ADDR) N(MULT_AUTH) N(EAP_ONLY) ]
sending packet: from 192.168.0.100[4500] to 192.168.0.1[4500]
received packet: from 192.168.0.1[4500] to 192.168.0.100[4500]
parsed IKE_AUTH response 1 [ IDr CERT AUTH N(IPCOMP_SUPP) SA TSi TSr N(AUTH_LFT) N(MOBIKE_SUP) N(ADD_4_ADDR) N(ADD_6_ADDR) N(ADD_6_ADDR) ]
received end entity cert "C=CH, O=Linux strongSwan, CN=moon.strongswan.org"
  using certificate "C=CH, O=Linux strongSwan, CN=moon.strongswan.org"
  using trusted ca certificate "C=CH, O=Linux strongSwan, CN=strongSwan Root CA"
checking certificate status of "C=CH, O=Linux strongSwan, CN=moon.strongswan.org"
  fetching crl from 'http://crl.strongswan.org/strongswan.crl' ...
  using trusted certificate "C=CH, O=Linux strongSwan, CN=strongSwan Root CA"
  crl correctly signed by "C=CH, O=Linux strongSwan, CN=strongSwan Root CA"
  crl is valid: until Mar 29 23:27:26 2010
certificate status is good
  reached self-signed root ca with a path length of 0
authentication of 'moon.strongswan.org' with RSA signature successful
IKE_SA home[1] established between 192.168.0.100[carol@strongswan.org]...192.168.0.1[moon.strongswan.org]
scheduling reauthentication in 3279s
maximum IKE_SA lifetime 3459s


TEST

moon# cat /var/log/daemon.log | grep 'IKE_AUTH request.*N(IPCOMP_SUPP)' [YES]
Feb 28 00:01:05 moon charon: 13[ENC] parsed IKE_AUTH request 1 [ IDi CERT CERTREQ IDr AUTH N(IPCOMP_SUPP) SA TSi TSr N(MOBIKE_SUP) N(ADD_6_ADDR) N(MULT_AUTH) N(EAP_ONLY) ] 

moon# cat /var/log/daemon.log | grep 'IKE_AUTH response.*N(IPCOMP_SUPP)' [YES]
Feb 28 00:01:05 moon charon: 13[ENC] generating IKE_AUTH response 1 [ IDr CERT AUTH N(IPCOMP_SUPP) SA TSi TSr N(AUTH_LFT) N(MOBIKE_SUP) N(ADD_4_ADDR) N(ADD_6_ADDR) N(ADD_6_ADDR) ] 

carol# ipsec status | grep 'home.*INSTALLED' [YES]
        home{1}:  INSTALLED, TUNNEL, ESP SPIs: ca160eb3_i c96e02f5_o, IPCOMP CPIs: 059b_i cdd2_o

moon# ipsec status | grep 'rw.*INSTALLED' [YES]
          rw{1}:  INSTALLED, TUNNEL, ESP SPIs: c96e02f5_i ca160eb3_o, IPCOMP CPIs: cdd2_i 059b_o

moon# ip xfrm state | grep 'proto comp spi' [YES]
	proto comp spi 0x0000059b reqid 1 mode tunnel
	proto comp spi 0x0000cdd2 reqid 1 mode tunnel

carol# ip xfrm state | grep 'proto comp spi' [YES]
	proto comp spi 0x0000cdd2 reqid 1 mode tunnel
	proto comp spi 0x0000059b reqid 1 mode tunnel

carol# ping -n -c 2 -s 8184 -p deadbeef 10.1.0.10 | grep '8192 bytes from 10.1.0.10' [YES]
8192 bytes from 10.1.0.10: icmp_seq=1 ttl=63 time=2.27 ms
8192 bytes from 10.1.0.10: icmp_seq=2 ttl=63 time=2.32 ms

moon# killall tcpdump

moon# cat /tmp/tcpdump.log | grep 'carol.strongswan.org > moon.strongswan.org: ESP' [YES]
00:01:06.812568 IP carol.strongswan.org > moon.strongswan.org: ESP(spi=0xc96e02f5,seq=0x1), length 132
00:01:07.818832 IP carol.strongswan.org > moon.strongswan.org: ESP(spi=0xc96e02f5,seq=0x2), length 132

moon# cat /tmp/tcpdump.log | grep 'moon.strongswan.org > carol.strongswan.org: ESP' [YES]
00:01:06.814407 IP moon.strongswan.org > carol.strongswan.org: ESP(spi=0xca160eb3,seq=0x1), length 132
00:01:07.820123 IP moon.strongswan.org > carol.strongswan.org: ESP(spi=0xca160eb3,seq=0x2), length 132


POST-TEST

moon# ipsec stop
Stopping strongSwan IPsec...

carol# ipsec stop
Stopping strongSwan IPsec...