[Swan] Problem connecting with shrew vpnclient with version 3.24

[antonio]

Hi,

cannot connect with shrew soft vpnclient to libreswan 3.24 (last version 
that worked was in version 3.20)  with psk+xauth:

Jun 08 15:27:46 sol pluto[18056]: packet from 192.168.10.170:33388: 
IKEv1 Aggressive Mode with PSK is vulnerable to dictionary attacks and 
is cracked on large scale by TLA's
Jun 08 15:27:46 sol pluto[18056]: "tunnel8-aggr"[1] 192.168.10.170 #3: 
Peer ID is ID_FQDN: '@'
Jun 08 15:27:46 sol pluto[18056]: "tunnel8-aggr"[1] 192.168.10.170 #3: 
responding to Aggressive Mode, state #3, connection "tunnel8-aggr"[1] 
192.168.10.170 from 192.168.10.170
Jun 08 15:27:46 sol pluto[18056]: "tunnel8-aggr"[1] 192.168.10.170 #3: 
STATE_AGGR_R1: sent AR1, expecting AI2
Jun 08 15:27:46 sol pluto[18056]: "tunnel8-aggr"[1] 192.168.10.170 #3: 
Peer ID is ID_IPV4_ADDR: '192.168.10.170'
Jun 08 15:27:46 sol pluto[18056]: "tunnel8-aggr"[1] 192.168.10.170 #3: 
received Hash Payload does not match computed value
Jun 08 15:27:46 sol pluto[18056]: "tunnel8-aggr"[1] 192.168.10.170 #3: 
sending encrypted notification INVALID_HASH_INFORMATION to 
192.168.10.170:33388
Jun 08 15:27:46 sol pluto[18056]: "tunnel8-aggr"[1] 192.168.10.170 #3: 
next payload type of ISAKMP Hash Payload has an unknown value: 218 (0xda)
Jun 08 15:27:46 sol pluto[18056]: "tunnel8-aggr"[1] 192.168.10.170 #3: 
malformed payload in packet


I tried to force phase1 parameters with no success, i always get "Hash 
Payload does not match computed value". Any idea what it could be the 
issue here?


The log when connecting with version 3.20:

Jun 08 15:24:34 sol pluto[12290]: packet from 192.168.10.170:33388: 
IKEv1 Aggressive Mode with PSK is vulnerable to dictionary attacks and 
is cracked on large scale by TLA's
Jun 08 15:24:34 sol pluto[12290]: "tunnel8-aggr"[1] 192.168.10.170 #3: 
Aggressive mode peer ID is ID_FQDN: '@'
Jun 08 15:24:34 sol pluto[12290]: "tunnel8-aggr"[1] 192.168.10.170 #3: 
switched from "tunnel8-aggr"[1] 192.168.10.170 to "tunnel8-aggr"
Jun 08 15:24:34 sol pluto[12290]: "tunnel8-aggr"[2] 192.168.10.170 #3: 
deleting connection "tunnel8-aggr"[1] 192.168.10.170 instance with peer 
192.168.10.170 {isakmp=#0/ipsec=#0}
Jun 08 15:24:34 sol pluto[12290]: "tunnel8-aggr"[2] 192.168.10.170 #3: 
responding to Aggressive Mode, state #3, connection "tunnel8-aggr"[2] 
192.168.10.170 from 192.168.10.170
Jun 08 15:24:34 sol pluto[12290]: "tunnel8-aggr"[2] 192.168.10.170 #3: 
transition from state STATE_AGGR_R0 to state STATE_AGGR_R1
Jun 08 15:24:34 sol pluto[12290]: "tunnel8-aggr"[2] 192.168.10.170 #3: 
STATE_AGGR_R1: sent AR1, expecting AI2
Jun 08 15:24:34 sol pluto[12290]: "tunnel8-aggr"[2] 192.168.10.170 #3: 
transition from state STATE_AGGR_R1 to state STATE_AGGR_R2
Jun 08 15:24:34 sol pluto[12290]: "tunnel8-aggr"[2] 192.168.10.170 #3: 
new NAT mapping for #3, was 192.168.10.170:33388, now 192.168.10.170:40182
Jun 08 15:24:34 sol pluto[12290]: "tunnel8-aggr"[2] 192.168.10.170 #3: 
STATE_AGGR_R2: ISAKMP SA established {auth=PRESHARED_KEY cipher=aes_256 
integ=md5 group=MODP1024}
Jun 08 15:24:34 sol pluto[12290]: "tunnel8-aggr"[2] 192.168.10.170 #3: 
ignoring informational payload IPSEC_INITIAL_CONTACT, msgid=00000000, 
length=28
Jun 08 15:24:34 sol pluto[12290]: | ISAKMP Notification Payload
Jun 08 15:24:34 sol pluto[12290]: |   00 00 00 1c  00 00 00 01 01 10 60 02
Jun 08 15:24:34 sol pluto[12290]: "tunnel8-aggr"[2] 192.168.10.170 #3: 
received and ignored informational message
Jun 08 15:24:34 sol pluto[12290]: | event EVENT_v1_SEND_XAUTH #3 
STATE_AGGR_R2
Jun 08 15:24:34 sol pluto[12290]: "tunnel8-aggr"[2] 192.168.10.170 #3: 
XAUTH: Sending Username/Password request (XAUTH_R0)

-- 
Saludos / Regards / Cumprimentos
Anónio Silva

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