list members,
i am going in circles trying to figure out where i have gone wrong and
could use some help. i have a libreswan instance behind my router, thus
am using NAT-T on the "left" side. i am trying to test with a client on
my network, accessing my dyn-dns name (external IP of my router), and
being forwarded to the libreswan instance.
all the routing is working and connections initiate, but do not complete
because auth fails. i get the following logs which indicates the error:
Sep 12 13:47:23 vpn pluto[1512]: "s2s"[9] 192.168.24.87: local IKE
proposals (IKE SA responder matching remote proposals):
Sep 12 13:47:23 vpn pluto[1512]: "s2s"[9] 192.168.24.87:
1:IKE=AES_GCM_C_256-HMAC_SHA2_512+HMAC_SHA2_256-NONE-ECP_256+ECP_384+ECP_521+MODP2048+MODP3072+MODP4096+MODP8192
Sep 12 13:47:23 vpn pluto[1512]: "s2s"[9] 192.168.24.87:
2:IKE=CHACHA20_POLY1305-HMAC_SHA2_512+HMAC_SHA2_256-NONE-ECP_256+ECP_384+ECP_521+MODP2048+MODP3072+MODP4096+MODP8192
Sep 12 13:47:23 vpn pluto[1512]: "s2s"[9] 192.168.24.87:
3:IKE=AES_CBC_256-HMAC_SHA2_512+HMAC_SHA2_256-HMAC_SHA2_512_256+HMAC_SHA2_256_128-ECP_256+ECP_384+ECP_521+MODP2048+MODP3072+MODP4096+MODP8192
Sep 12 13:47:23 vpn pluto[1512]: "s2s"[9] 192.168.24.87:
4:IKE=AES_GCM_C_128-HMAC_SHA2_512+HMAC_SHA2_256-NONE-ECP_256+ECP_384+ECP_521+MODP2048+MODP3072+MODP4096+MODP8192
Sep 12 13:47:23 vpn pluto[1512]: "s2s"[9] 192.168.24.87:
5:IKE=AES_CBC_128-HMAC_SHA2_256-HMAC_SHA2_256_128-ECP_256+ECP_384+ECP_521+MODP2048+MODP3072+MODP4096+MODP8192
Sep 12 13:47:23 vpn pluto[1512]: "s2s"[9] 192.168.24.87 #84:
proposal 1:IKE=AES_GCM_C_256-HMAC_SHA2_512-ECP_256 chosen from
remote proposals
1:IKE:ENCR=AES_GCM_C_256;PRF=HMAC_SHA2_512;DH=ECP_256[first-match]
2:IKE:ENCR=AES_GCM_C_256;PRF=HMAC_SHA2_256;DH=ECP_256
3:IKE:ENCR=AES_CBC_256;PRF=HMAC_SHA2_512;INTEG=HMAC_SHA2_512_256;DH=ECP_256
4:IKE:ENCR=AES_CBC_256;PRF=HMAC_SHA1;INTEG=HMAC_SHA1_96;DH=ECP_256
5:IKE:ENCR=AES_CBC_128;PRF=HMAC_SHA2_256;INTEG=HMAC_SHA2_256_128;DH=ECP_256
6:IKE:ENCR=AES_CBC_128;PRF=HMAC_SHA1;INTEG=HMAC_SHA1_96;DH=ECP_256
7:IKE:ENCR=3DES;PRF=HMAC_SHA1;INTEG=HMAC_SHA1_96;DH=ECP_256
8:IKE:ENCR=AES_GCM_C_256;PRF=HMAC_SHA2_512;DH=ECP_384
9:IKE:ENCR=AES_GCM_C_256;PRF=HMAC_SHA2_256;DH=ECP_384
10:IKE:ENCR=AES_CBC_256;PRF=HMAC_SHA2_512;INTEG=HMAC_SHA2_512_256;DH=ECP_384
11:IKE:ENCR=AES_CBC_256;PRF=HMAC_SHA1;INTEG=HMAC_SHA1_96;DH=ECP_384
12:IKE:ENCR=AES_CBC_128;PRF=HMAC_SHA2_256;INTEG=HMAC_SHA2_256_128;DH=ECP_384
13:IKE:ENCR=AES_CBC_128;PRF=HMAC_SHA1;INTEG=HMAC_SHA1_96;DH=ECP_384
14:IKE:ENCR=3DES;PRF=HMAC_SHA1;INTEG=HMAC_SHA1...
Sep 12 13:47:23 vpn pluto[1512]: "s2s"[9] 192.168.24.87 #84: sent
IKE_SA_INIT reply {auth=IKEv2 cipher=AES_GCM_16_256 integ=n/a
prf=HMAC_SHA2_512 group=DH19}
Sep 12 13:47:23 vpn pluto[1512]: "s2s"[9] 192.168.24.87 #84:
processing decrypted IKE_AUTH request: SK{IDi,AUTH,SA,TSi,TSr}
Sep 12 13:47:23 vpn pluto[1512]: "s2s"[9] 192.168.24.87 #84: IKEv2
mode peer ID is ID_IPV4_ADDR: '192.168.24.87'
Sep 12 13:47:23 vpn pluto[1512]: "s2s"[9] 192.168.24.87 #84: AUTH
mismatch: Received AUTH != computed AUTH
Sep 12 13:47:23 vpn pluto[1512]: "s2s"[9] 192.168.24.87 #84: PSK
Authentication failed: AUTH mismatch in I2 Auth Payload!
Sep 12 13:47:23 vpn audit[1512]: CRYPTO_IKE_SA pid=1512 uid=0
auid=4294967295 ses=4294967295 subj=kernel msg='op=start
direction=responder conn-name="s2s" connstate=84 ike-version=2.0
auth=PRESHARED_KEY cipher=aes_gcm_16 ksize=256 integ=none prf=sha512
pfs=DH19 raddr=192.168.24.87 exe="/usr/libexec/ipsec/pluto"
hostname=? addr=192.168.152.254 terminal=? res=failed'
Sep 12 13:47:23 vpn pluto[1512]: "s2s"[9] 192.168.24.87 #84:
responding to IKE_AUTH message (ID 1) from 192.168.24.87:4500 with
encrypted notification AUTHENTICATION_FAILED
Sep 12 13:47:23 vpn pluto[1512]: "s2s"[9] 192.168.24.87 #84:
encountered fatal error in state STATE_PARENT_R1
Sep 12 13:47:23 vpn pluto[1512]: "s2s"[9] 192.168.24.87 #84:
deleting state (STATE_PARENT_R1) aged 0.037191s and NOT sending
notification
Sep 12 13:47:23 vpn pluto[1512]: "s2s"[9] 192.168.24.87: deleting
connection instance with peer 192.168.24.87 {isakmp=#0/ipsec=#0}
the "left" config:
# Site-to-Site (s2s) Config
conn s2s
rekey=yes
left=192.168.152.254
leftsubnet=192.168.152.0/24
right=%any
ikelifetime=28800s
authby=secret
type=tunnel
auto=add
ikev2=insist
fragmentation=yes
the "left" secrets:
192.168.152.254 %any : PSK "SooperSekretString"
the "right" config
#Site-to-Site (s2s) Config
conn s2s
rekey=yes
left=%defaultroute
right=bkearney.ddns.net
ikelifetime=28800s
authby=secret
type=tunnel
auto=start
ikev2=insist
fragmentation=yes
the "right" secrets:
%any @ext.dyndns.tld : PSK "SooperSekretString"
any insight would be greatly appreciated. i am at a loss as to where i
am messing this up.
thank you,
brendan kearney
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