[strongSwan] Issue of "no IKE config found for ..., sending NO_PROPOSAL_CHOSEN"

[Jafar Al-Gharaibeh]

Jianjun,

  I see at least one issue, "left" config is wrong, instead of

   left=0.0.0.0

 you want

   left=%any

Regards,

Jafar



On 9/2/19 5:03 PM, Jianjun Shen Shen wrote:
> Hello,
>
> I am using strongswan (U5.3.5/K4.4.0-87-generic) on Ubuntu (16.04.3 LTS).
>
> Running "/usr/lib/ipsec/charon --debug-cfg 4 --debug-ike 4" got the
> following log messages:
> 00[DMN] Starting IKE charon daemon (strongSwan 5.3.5, Linux
> 4.4.0-87-generic, x86_64)
> 00[CFG] loading ca certificates from '/etc/ipsec.d/cacerts'
> 00[CFG] loading aa certificates from '/etc/ipsec.d/aacerts'
> 00[CFG] loading ocsp signer certificates from '/etc/ipsec.d/ocspcerts'
> 00[CFG] loading attribute certificates from '/etc/ipsec.d/acerts'
> 00[CFG] loading crls from '/etc/ipsec.d/crls'
> 00[CFG] loading secrets from '/etc/ipsec.secrets'
> 00[CFG]   loaded IKE secret for 0.0.0.0 10.162.19.54
> 00[CFG]   secret: 73:77:6f:72:64:66:69:73:68
> 00[LIB] loaded plugins: charon test-vectors aes rc2 sha1 sha2 md4 md5
> random nonce x509 revocation constraints pubkey pkcs1 pkcs7 pkcs8
> pkcs12 pgp dnskey sshkey pem fips-prf gmp xcbc hmac attr
> kernel-netlink resolve socket-default stroke updown
> 00[LIB] dropped capabilities, running as uid 0, gid 0
> 00[JOB] spawning 16 worker threads
> 05[NET] received packet: from 10.162.19.54[500] to 10.162.19.55[500]
> (660 bytes)
> 05[ENC] parsed IKE_SA_INIT request 0 [ SA KE No N(NATD_S_IP)
> N(NATD_D_IP) N(HASH_ALG) ]
> 05[CFG] looking for an ike config for 10.162.19.55...10.162.19.54
> 05[IKE] no IKE config found for 10.162.19.55...10.162.19.54, sending
> NO_PROPOSAL_CHOSEN
> 05[ENC] generating IKE_SA_INIT response 0 [ N(NO_PROP) ]
> 05[NET] sending packet: from 10.162.19.55[500] to 10.162.19.54[500]
> (36 bytes)
> 05[IKE] IKE_SA (unnamed)[1] state change: CREATED => DESTROYING
>
> And my ipsec.conf is quite simple:
> config setup
>     uniqueids=yes
>
> conn %default
>     keyingtries=%forever
>     type=transport
>     keyexchange=ikev2
>     auto=route
>     ike=aes256gcm16-sha256-modp2048
>     esp=aes256gcm16-modp2048
>
> conn host54
>     left=0.0.0.0
>     right=10.162.19.54
>     authby=psk
>     leftprotoport=gre
>     rightprotoport=gre
>
> "ipsec statusall" shows the following:
> Status of IKE charon daemon (strongSwan 5.3.5, Linux 4.4.0-87-generic,
> x86_64):
>   uptime: 3 seconds, since Sep 02 22:00:24 2019
>   malloc: sbrk 1216512, mmap 0, used 251808, free 964704
>   worker threads: 11 of 16 idle, 5/0/0/0 working, job queue: 0/0/0/0,
> scheduled: 0
>   loaded plugins: charon test-vectors aes rc2 sha1 sha2 md4 md5 random
> nonce x509 revocation constraints pubkey pkcs1 pkcs7 pkcs8 pkcs12 pgp
> dnskey sshkey pem fips-prf gmp xcbc hmac attr kernel-netlink resolve
> socket-default stroke updown
> Listening IP addresses:
>   10.162.19.55
>   fd01:0:101:2616:20c:29ff:fe2f:26c4
>   172.17.0.1
>   192.168.0.55
> Connections:
>     host54:  0.0.0.0...10.162.19.54  IKEv2
>     host54:   local:  uses pre-shared key authentication
>     host54:   remote: [10.162.19.54] uses pre-shared key authentication
>     host54:   child:  dynamic[gre] === dynamic[gre] TRANSPORT
> Routed Connections:
>     host54 {1}:  ROUTED, TRANSPORT, reqid 1
>     host54 {1}:   10.162.19.55/32[gre] <http://10.162.19.55/32[gre]>
> === 10.162.19.54/32[gre] <http://10.162.19.54/32[gre]>
> Security Associations (0 up, 0 connecting):
>   none
>
> So, I could not see anything wrong. Could you please help?
>
> Regards,
> Jianjun
>
>
>
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