cat /etc/ipsec.conf
config setup
protostack=netkey
plutodebug=none
#klipsdebug=none
plutostderrlog=/var/log/pluto/pluto.log
dumpdir=/var/run/pluto/
nat_traversal=yes
virtual_private=%v4:172.16.1.0/22
include /etc/ipsec.d/ipsec.conf
cat /etc/ipsec.d/ipsec.conf
conn L2TPD-PSK
authby=secret
pfs=no
auto=add
keyingtries=3
rekey=no
type=transport
forceencaps=yes
right=%any
rightsubnet=vhost:%no,%priv
rightprotoport=17/%any
# Using the magic port of "0" means "any one single port". This is
# a work around required for Apple OSX clients that use a randomly
# high port, but propose "0" instead of their port.
left=%defaultroute
leftprotoport=17/1701
# Apple iOS doesn't send delete notify so we need dead peer detection
# to detect vanishing clients
dpddelay=10
dpdtimeout=90
dpdaction=clear
Check in /var/log/pluto/pluto.log
Aug 11 09:01:03: "L2TPD-PSK"[7] 43.243.56.130 #16: received Delete SA(0xb1bad446) payload: deleting IPSEC State #20
Aug 11 09:01:03: "L2TPD-PSK"[7] 43.243.56.130 #16: deleting other state #20 (STATE_QUICK_R2) "L2TPD-PSK"[7] 43.243.56.130
Aug 11 09:01:03: "L2TPD-PSK"[7] 43.243.56.130 #16: ESP traffic information: in=0B out=0B
Aug 11 09:01:03: "L2TPD-PSK"[7] 43.243.56.130 #16: received and ignored empty informational notification payload
Aug 11 09:01:13: "L2TPD-PSK"[7] 43.243.56.130 #16: the peer proposed: 43.243.56.132/32:17/1701 -> 192.168.222.22/32:17/1701
Aug 11 09:01:13: "L2TPD-PSK"[7] 43.243.56.130 #16: NAT-Traversal: received 2 NAT-OA. Using first, ignoring others
Aug 11 09:01:13: "L2TPD-PSK"[7] 43.243.56.130 #22: responding to Quick Mode proposal {msgid:06000000}
Aug 11 09:01:13: "L2TPD-PSK"[7] 43.243.56.130 #22: us: 43.243.56.132:17/1701
Aug 11 09:01:13: "L2TPD-PSK"[7] 43.243.56.130 #22: them: 43.243.56.130[192.168.222.22]:17/1701===192.168.222.22/32
Aug 11 09:01:13: "L2TPD-PSK"[7] 43.243.56.130 #22: them: 43.243.56.130[192.168.222.22]:17/1701===192.168.222.22/32
Aug 11 09:01:13: "L2TPD-PSK"[7] 43.243.56.130 #22: keeping refhim=0 during rekey
Aug 11 09:01:13: "L2TPD-PSK"[7] 43.243.56.130 #22: transition from state STATE_QUICK_R0 to state STATE_QUICK_R1
Aug 11 09:01:13: "L2TPD-PSK"[7] 43.243.56.130 #22: STATE_QUICK_R1: sent QR1, inbound IPsec SA installed, expecting QI2 transport mode {ESP/NAT=>0x3a7b3832 <0xf29e9a67 xfrm=AES_256-HMAC_SHA1 NATOA=192.168.222.22 NATD=43.243.56.130:4500 DPD=active}
Aug 11 09:01:13: "L2TPD-PSK"[7] 43.243.56.130 #22: Configured DPD (RFC 3706) support not enabled because remote peer did not advertise DPD support
Aug 11 09:01:13: "L2TPD-PSK"[7] 43.243.56.130 #22: transition from state STATE_QUICK_R1 to state STATE_QUICK_R2
Aug 11 09:01:13: "L2TPD-PSK"[7] 43.243.56.130 #22: STATE_QUICK_R2: IPsec SA established transport mode {ESP/NAT=>0x3a7b3832 <0xf29e9a67 xfrm=AES_256-HMAC_SHA1 NATOA=192.168.222.22 NATD=43.243.56.130:4500 DPD=active}
Aug 11 09:01:13: "L2TPD-PSK"[7] 43.243.56.130 #16: received Delete SA(0xa9382650) payload: deleting IPSEC State #21
Aug 11 09:01:13: "L2TPD-PSK"[7] 43.243.56.130 #16: deleting other state #21 (STATE_QUICK_R2) "L2TPD-PSK"[7] 43.243.56.130
Aug 11 09:01:13: "L2TPD-PSK"[7] 43.243.56.130 #16: ESP traffic information: in=0B out=0B
Aug 11 09:01:13: "L2TPD-PSK"[7] 43.243.56.130 #16: ESP traffic information: in=0B out=0B
Aug 11 09:01:13: "L2TPD-PSK"[7] 43.243.56.130 #16: received and ignored empty informational notification payload
Aug 11 09:01:23: "L2TPD-PSK"[7] 43.243.56.130 #16: received Delete SA(0x3a7b3832) payload: deleting IPSEC State #22
Aug 11 09:01:23: "L2TPD-PSK"[7] 43.243.56.130 #16: deleting other state #22 (STATE_QUICK_R2) "L2TPD-PSK"[7] 43.243.56.130
Aug 11 09:01:23: "L2TPD-PSK"[7] 43.243.56.130 #16: ESP traffic information: in=0B out=0B
Aug 11 09:01:23: "L2TPD-PSK" #16: deleting state (STATE_MAIN_R3)
Aug 11 09:01:23: "L2TPD-PSK"[7] 43.243.56.130: deleting connection "L2TPD-PSK"[7] 43.243.56.130 instance with peer 43.243.56.130 {isakmp=#0/ipsec=#0}
Aug 11 09:01:23: packet from 43.243.56.130:4500: received and ignored empty informational notification payload
ipsec whack --status
000 using kernel interface: netkey
000 interface lo/lo 127.0.0.1@4500
000 interface lo/lo 127.0.0.1@500
000 interface eth0/eth0 172.16.0.2@4500
000 interface eth0/eth0 172.16.0.2@500
000 interface eth1/eth1 43.243.56.132@4500
000 interface eth1/eth1 43.243.56.132@500
000
000
000 fips mode=disabled;
000 SElinux=disabled
000
000 config setup options:
000
000 configdir=/etc, configfile=/etc/ipsec.conf, secrets=/etc/ipsec.secrets, ipsecdir=/etc/ipsec.d, dumpdir=/var/run/pluto/, statsbin=unset
000 sbindir=/usr/sbin, libexecdir=/usr/libexec/ipsec
000 pluto_version=3.18, pluto_vendorid=OE-Libreswan-3.18
000 nhelpers=-1, uniqueids=yes, perpeerlog=no, shuntlifetime=900s, xfrmlifetime=300s
000 ddos-cookies-threshold=50000, ddos-max-halfopen=25000, ddos-mode=auto
000 ikeport=500, strictcrlpolicy=no, crlcheckinterval=0, listen=<any>, nflog-all=0
000 secctx-attr-type=32001
000 myid = (none)
000 debug none
000
000 nat-traversal=yes, keep-alive=20, nat-ikeport=4500
000 virtual-private (%priv):
000 - allowed subnet: 172.16.0.0/22
000
000 ESP algorithms supported:
000
000 algorithm ESP encrypt: id=3, name=ESP_3DES, ivlen=8, keysizemin=192, keysizemax=192
000 algorithm ESP encrypt: id=6, name=ESP_CAST, ivlen=8, keysizemin=128, keysizemax=128
000 algorithm ESP encrypt: id=11, name=ESP_NULL, ivlen=0, keysizemin=0, keysizemax=0
000 algorithm ESP encrypt: id=12, name=ESP_AES, ivlen=8, keysizemin=128, keysizemax=256
000 algorithm ESP encrypt: id=13, name=ESP_AES_CTR, ivlen=8, keysizemin=128, keysizemax=256
000 algorithm ESP encrypt: id=14, name=ESP_AES_CCM_A, ivlen=8, keysizemin=128, keysizemax=256
000 algorithm ESP encrypt: id=15, name=ESP_AES_CCM_B, ivlen=8, keysizemin=128, keysizemax=256
000 algorithm ESP encrypt: id=16, name=ESP_AES_CCM_C, ivlen=8, keysizemin=128, keysizemax=256
000 algorithm ESP encrypt: id=18, name=ESP_AES_GCM_A, ivlen=8, keysizemin=128, keysizemax=256
000 algorithm ESP encrypt: id=19, name=ESP_AES_GCM_B, ivlen=12, keysizemin=128, keysizemax=256
000 algorithm ESP encrypt: id=20, name=ESP_AES_GCM_C, ivlen=16, keysizemin=128, keysizemax=256
000 algorithm ESP encrypt: id=22, name=ESP_CAMELLIA, ivlen=8, keysizemin=128, keysizemax=256
000 algorithm ESP encrypt: id=252, name=ESP_SERPENT, ivlen=8, keysizemin=128, keysizemax=256
000 algorithm ESP encrypt: id=253, name=ESP_TWOFISH, ivlen=8, keysizemin=128, keysizemax=256
000 algorithm AH/ESP auth: id=1, name=AUTH_ALGORITHM_HMAC_MD5, keysizemin=128, keysizemax=128
000 algorithm AH/ESP auth: id=2, name=AUTH_ALGORITHM_HMAC_SHA1, keysizemin=160, keysizemax=160
000 algorithm AH/ESP auth: id=5, name=AUTH_ALGORITHM_HMAC_SHA2_256, keysizemin=256, keysizemax=256
000 algorithm AH/ESP auth: id=6, name=AUTH_ALGORITHM_HMAC_SHA2_384, keysizemin=384, keysizemax=384
000 algorithm AH/ESP auth: id=7, name=AUTH_ALGORITHM_HMAC_SHA2_512, keysizemin=512, keysizemax=512
000 algorithm AH/ESP auth: id=8, name=AUTH_ALGORITHM_HMAC_RIPEMD, keysizemin=160, keysizemax=160
000 algorithm AH/ESP auth: id=9, name=AUTH_ALGORITHM_AES_XCBC, keysizemin=128, keysizemax=128
000 algorithm AH/ESP auth: id=251, name=AUTH_ALGORITHM_NULL_KAME, keysizemin=0, keysizemax=0
000
000 IKE algorithms supported:
000
000 algorithm IKE encrypt: v1id=0, v1name=0??, v2id=16, v2name=AES_CCM_C, blocksize=16, keydeflen=128
000 algorithm IKE encrypt: v1id=0, v1name=0??, v2id=15, v2name=AES_CCM_B, blocksize=16, keydeflen=128
000 algorithm IKE encrypt: v1id=0, v1name=0??, v2id=14, v2name=AES_CCM_A, blocksize=16, keydeflen=128
000 algorithm IKE encrypt: v1id=5, v1name=OAKLEY_3DES_CBC, v2id=3, v2name=3DES, blocksize=8, keydeflen=192
000 algorithm IKE encrypt: v1id=24, v1name=OAKLEY_CAMELLIA_CTR, v2id=24, v2name=CAMELLIA_CTR, blocksize=16, keydeflen=128
000 algorithm IKE encrypt: v1id=8, v1name=OAKLEY_CAMELLIA_CBC, v2id=23, v2name=CAMELLIA_CBC, blocksize=16, keydeflen=128
000 algorithm IKE encrypt: v1id=20, v1name=OAKLEY_AES_GCM_C, v2id=20, v2name=AES_GCM_C, blocksize=16, keydeflen=128
000 algorithm IKE encrypt: v1id=19, v1name=OAKLEY_AES_GCM_B, v2id=19, v2name=AES_GCM_B, blocksize=16, keydeflen=128
000 algorithm IKE encrypt: v1id=18, v1name=OAKLEY_AES_GCM_A, v2id=18, v2name=AES_GCM_A, blocksize=16, keydeflen=128
000 algorithm IKE encrypt: v1id=13, v1name=OAKLEY_AES_CTR, v2id=13, v2name=AES_CTR, blocksize=16, keydeflen=128
000 algorithm IKE encrypt: v1id=7, v1name=OAKLEY_AES_CBC, v2id=12, v2name=AES_CBC, blocksize=16, keydeflen=128
000 algorithm IKE encrypt: v1id=65004, v1name=OAKLEY_SERPENT_CBC, v2id=65004, v2name=SERPENT_CBC, blocksize=16, keydeflen=128
000 algorithm IKE encrypt: v1id=65005, v1name=OAKLEY_TWOFISH_CBC, v2id=65005, v2name=TWOFISH_CBC, blocksize=16, keydeflen=128
000 algorithm IKE encrypt: v1id=65289, v1name=OAKLEY_TWOFISH_CBC_SSH, v2id=65289, v2name=TWOFISH_CBC_SSH, blocksize=16, keydeflen=128
000 algorithm IKE hash: id=1, name=OAKLEY_MD5, hashlen=16
000 algorithm IKE hash: id=2, name=OAKLEY_SHA1, hashlen=20
000 algorithm IKE hash: id=4, name=OAKLEY_SHA2_256, hashlen=32
000 algorithm IKE hash: id=5, name=OAKLEY_SHA2_384, hashlen=48
000 algorithm IKE hash: id=6, name=OAKLEY_SHA2_512, hashlen=64
000 algorithm IKE hash: id=9, name=DISABLED-OAKLEY_AES_XCBC, hashlen=16
000 algorithm IKE dh group: id=2, name=OAKLEY_GROUP_MODP1024, bits=1024
000 algorithm IKE dh group: id=5, name=OAKLEY_GROUP_MODP1536, bits=1536
000 algorithm IKE dh group: id=14, name=OAKLEY_GROUP_MODP2048, bits=2048
000 algorithm IKE dh group: id=15, name=OAKLEY_GROUP_MODP3072, bits=3072
000 algorithm IKE dh group: id=16, name=OAKLEY_GROUP_MODP4096, bits=4096
000 algorithm IKE dh group: id=17, name=OAKLEY_GROUP_MODP6144, bits=6144
000 algorithm IKE dh group: id=18, name=OAKLEY_GROUP_MODP8192, bits=8192
000 algorithm IKE dh group: id=22, name=OAKLEY_GROUP_DH22, bits=1024
000 algorithm IKE dh group: id=23, name=OAKLEY_GROUP_DH23, bits=2048
000 algorithm IKE dh group: id=24, name=OAKLEY_GROUP_DH24, bits=2048
000
000 stats db_ops: {curr_cnt, total_cnt, maxsz} :context={0,0,0} trans={0,0,0} attrs={0,0,0}
000
000 Connection list:
000
000 "L2TPD-PSK": 43.243.56.132:17/1701---43.243.56.134...%virtual:17/%any===vhost:?; unrouted; eroute owner: #0
000 "L2TPD-PSK": oriented; my_ip=unset; their_ip=unset
000 "L2TPD-PSK": xauth us:none, xauth them:none, my_username=[any]; their_username=[any]
000 "L2TPD-PSK": modecfg info: us:none, them:none, modecfg policy:push, dns1:unset, dns2:unset, domain:unset, banner:unset, cat:unset;
000 "L2TPD-PSK": labeled_ipsec:no;
000 "L2TPD-PSK": policy_label:unset;
000 "L2TPD-PSK": ike_life: 3600s; ipsec_life: 28800s; replay_window: 32; rekey_margin: 540s; rekey_fuzz: 100%; keyingtries: 3;
000 "L2TPD-PSK": retransmit-interval: 500ms; retransmit-timeout: 60s;
000 "L2TPD-PSK": sha2-truncbug:no; initial-contact:no; cisco-unity:no; fake-strongswan:no; send-vendorid:no; send-no-esp-tfc:no;
000 "L2TPD-PSK": policy: PSK+ENCRYPT+DONT_REKEY+IKEV1_ALLOW+IKEV2_ALLOW+SAREF_TRACK+IKE_FRAG_ALLOW+ESN_NO;
000 "L2TPD-PSK": conn_prio: 32,32; interface: eth1; metric: 0; mtu: unset; sa_prio:auto; sa_tfc:none;
000 "L2TPD-PSK": nflog-group: unset; mark: unset; vti-iface:unset; vti-routing:no; vti-shared:no;
000 "L2TPD-PSK": dpd: action:clear; delay:10; timeout:90; nat-t: force_encaps:yes; nat_keepalive:yes; ikev1_natt:both
000 "L2TPD-PSK": newest ISAKMP SA: #0; newest IPsec SA: #0;
000
000 Total IPsec connections: loaded 1, active 0
000
000 State Information: DDoS cookies not required, Accepting new IKE connections
000 IKE SAs: total(0), half-open(0), open(0), authenticated(0), anonymous(0)
000 IPsec SAs: total(0), authenticated(0), anonymous(0)
000
000 Bare Shunt list:
000
Sorry for the log spam but pluto.log shows the connection attempt but no connection. Sorry used netstat and found ports open.. funny now lsof is showing the port.