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# rm /etc/ipsec.d/cacerts/* sun# rm /etc/ipsec.d/cacerts/* moon# ipsec start Starting strongSwan IPsec 2.8.8 [starter]... sun# ipsec start Starting strongSwan IPsec 2.8.8 [starter]... moon# sleep 2 moon# ipsec up net-net 002 "net-net" #1: initiating Main Mode 104 "net-net" #1: STATE_MAIN_I1: initiate 003 "net-net" #1: ignoring Vendor ID payload [strongSwan 2.8.8] 003 "net-net" #1: received Vendor ID payload [OpenPGP] 003 "net-net" #1: received Vendor ID payload [XAUTH] 003 "net-net" #1: received Vendor ID payload [Dead Peer Detection] 106 "net-net" #1: STATE_MAIN_I2: sent MI2, expecting MR2 002 "net-net" #1: we have a cert and are sending it 108 "net-net" #1: STATE_MAIN_I3: sent MI3, expecting MR3 002 "net-net" #1: Peer ID is ID_KEY_ID: '0x029710d483a1d3e545a26ec81b394a66' 003 "net-net" #1: ignoring CERT_PGP certificate payload 002 "net-net" #1: ISAKMP SA established 004 "net-net" #1: STATE_MAIN_I4: ISAKMP SA established 002 "net-net" #2: initiating Quick Mode RSASIG+ENCRYPT+TUNNEL+PFS+UP {using isakmp#1} 112 "net-net" #2: STATE_QUICK_I1: initiate 002 "net-net" #2: sent QI2, IPsec SA established {ESP=>0x7fa59afb <0x3a4ba0be} 004 "net-net" #2: STATE_QUICK_I2: sent QI2, IPsec SA established {ESP=>0x7fa59afb <0x3a4ba0be} TEST moon# ipsec status | grep 'net-net.*STATE_QUICK_I2.*IPsec SA established' [YES] 000 #2: "net-net" STATE_QUICK_I2 (sent QI2, IPsec SA established); EVENT_SA_REPLACE in 969s; newest IPSEC; eroute owner sun# ipsec status | grep 'net-net.*STATE_QUICK_R2.*IPsec SA established' [YES] 000 #2: "net-net" STATE_QUICK_R2 (IPsec SA established); EVENT_SA_REPLACE in 1110s; newest IPSEC; eroute owner alice# ping -c 1 10.2.0.10 | grep '64 bytes from 10.2.0.10: icmp_seq=1' [YES] 64 bytes from 10.2.0.10: icmp_seq=1 ttl=62 time=1.49 ms sun# killall tcpdump sun# cat /tmp/tcpdump.log | grep 'IP moon.strongswan.org > sun.strongswan.org: ESP' [YES] 12:25:29.440848 IP moon.strongswan.org > sun.strongswan.org: ESP(spi=0x7fa59afb,seq=0x1), length 116 sun# cat /tmp/tcpdump.log | grep 'IP sun.strongswan.org > moon.strongswan.org: ESP' [YES] 12:25:29.441145 IP sun.strongswan.org > moon.strongswan.org: ESP(spi=0x3a4ba0be,seq=0x1), length 116 POST-TEST moon# iptables -v -n -L Chain INPUT (policy DROP 0 packets, 0 bytes) pkts bytes target prot opt in out source destination 1 136 ACCEPT esp -- eth0 * 0.0.0.0/0 0.0.0.0/0 4 1376 ACCEPT udp -- eth0 * 0.0.0.0/0 0.0.0.0/0 udp spt:500 dpt:500 0 0 ACCEPT tcp -- eth0 * 192.168.0.150 0.0.0.0/0 tcp spt:80 207 29700 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:22 Chain FORWARD (policy DROP 0 packets, 0 bytes) pkts bytes target prot opt in out source destination 1 84 ACCEPT all -- eth0 * 10.2.0.0/16 10.1.0.0/16 policy match dir in pol ipsec reqid 16385 proto 50 1 84 ACCEPT all -- * eth0 10.1.0.0/16 10.2.0.0/16 policy match dir out pol ipsec reqid 16385 proto 50 Chain OUTPUT (policy DROP 1 packets, 116 bytes) pkts bytes target prot opt in out source destination 1 136 ACCEPT esp -- * eth0 0.0.0.0/0 0.0.0.0/0 5 1576 ACCEPT udp -- * eth0 0.0.0.0/0 0.0.0.0/0 udp spt:500 dpt:500 0 0 ACCEPT tcp -- * eth0 0.0.0.0/0 192.168.0.150 tcp dpt:80 213 39468 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp spt:22 sun# iptables -v -n -L Chain INPUT (policy DROP 0 packets, 0 bytes) pkts bytes target prot opt in out source destination 1 136 ACCEPT esp -- eth0 * 0.0.0.0/0 0.0.0.0/0 5 1576 ACCEPT udp -- eth0 * 0.0.0.0/0 0.0.0.0/0 udp dpt:500 0 0 ACCEPT udp -- eth0 * 0.0.0.0/0 0.0.0.0/0 udp dpt:4500 0 0 ACCEPT tcp -- eth0 * 192.168.0.150 0.0.0.0/0 tcp spt:80 203 31364 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:22 Chain FORWARD (policy DROP 0 packets, 0 bytes) pkts bytes target prot opt in out source destination 1 84 ACCEPT all -- eth0 * 10.1.0.0/16 10.2.0.0/16 policy match dir in pol ipsec reqid 16385 proto 50 1 84 ACCEPT all -- * eth0 10.2.0.0/16 10.1.0.0/16 policy match dir out pol ipsec reqid 16385 proto 50 Chain OUTPUT (policy DROP 0 packets, 0 bytes) pkts bytes target prot opt in out source destination 1 136 ACCEPT esp -- * eth0 0.0.0.0/0 0.0.0.0/0 4 1376 ACCEPT udp -- * eth0 0.0.0.0/0 0.0.0.0/0 udp spt:500 0 0 ACCEPT udp -- * eth0 0.0.0.0/0 0.0.0.0/0 udp spt:4500 0 0 ACCEPT tcp -- * eth0 0.0.0.0/0 192.168.0.150 tcp dpt:80 210 41652 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp spt:22 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 ] moon# rm /etc/ipsec.d/certs/* moon# rm /etc/ipsec.d/private/* sun# rm /etc/ipsec.d/certs/* sun# rm /etc/ipsec.d/private/*