[strongSwan] NO_PROPOSAL_CHOSEN when using 5.6.2 on Ubuntu 18.04

Wed May 12 01:09:48 CEST 2021

Okay, what's your complete ipsec.conf? Can you send it?

Kind regards
Noel

Am 12.05.21 um 00:54 schrieb Karuna Sagar Krishna:
> Attaching full charon logs.
>
> Can you help with the ipsec.conf interface. I'll plan to switch to swanctl going forward, but currently this is blocking our releases.
>
> --karuna
>
>
> On Tue, May 11, 2021 at 2:54 PM Noel Kuntze <noel.kuntze+strongswan-users-ml at thermi.consulting> wrote:
>
>     Hi,
>
>     Full logs please, as shown on the HelpRequests[1] page on the wiki.
>     Also, it's strongly recommended to use swanctl instead if possible. That's the better configuration backend.
>
>     Kind regards
>     Noel
>
>     [1] https://wiki.strongswan.org/projects/strongswan/wiki/HelpRequests <https://wiki.strongswan.org/projects/strongswan/wiki/HelpRequests>
>
>     Am 11.05.21 um 23:50 schrieb Karuna Sagar Krishna:
>     > Hi,
>     >
>     > I'm setting up a IPSec connection between a bunch of Ubuntu 18.04 LTS nodes. I'm using Strongswan (Linux strongSwan U5.6.2/K5.4.0-1046-azure) on the Ubuntu nodes. The number of nodes is dynamic i.e. there are frequent scale out/ins. So the ipsec.conf file (see attached) is updated with additional conn sections and `sudo ipsec update` is used to reload the config file. However, I've noticed intermittent network connectivity issues and the syslog shows -> "no IKE config found for 10.0.0.14...10.0.0.18, sending NO_PROPOSAL_CHOSEN". Clearly, the ipsec status shows that the daemon has not reloaded the config irrespective of issuing `sudo ipsec update` multiple times.
>     >
>     > Can you help understand why the config is not updated and how to fix this issue?
>     >
>     >
>     >
>     > IPSec status:
>     > -----------------
>     >
>     >  > sudo ipsec statusall
>     >
>     > Status of IKE charon daemon (strongSwan 5.6.2, Linux 5.4.0-1046-azure, x86_64):
>     >    uptime: 45 minutes, since May 11 20:42:07 2021
>     >    malloc: sbrk 2703360, mmap 0, used 778800, free 1924560
>     >    worker threads: 11 of 16 idle, 5/0/0/0 working, job queue: 0/0/0/0, scheduled: 2
>     >    loaded plugins: charon aesni aes rc2 sha2 sha1 md4 md5 mgf1 random nonce x509 revocation constraints pubkey pkcs1 pkcs7 pkcs8 pkcs12 pgp dnskey sshkey pem openssl fips-prf gmp agent xcbc hmac gcm attr kernel-netlink resolve socket-default connmark stroke updown eap-mschapv2 xauth-generic counters
>     > Listening IP addresses:
>     >    10.0.0.14
>     > Connections:
>     > hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net> <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net>>:  10.0.0.14...10.0.0.15  IKEv2
>     > hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net> <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net>>:   local:  [CN=IP-37fa1445fc.hdinsight-stable.azure-test.net <http://IP-37fa1445fc.hdinsight-stable.azure-test.net> <http://IP-37fa1445fc.hdinsight-stable.azure-test.net <http://IP-37fa1445fc.hdinsight-stable.azure-test.net>>] uses public key authentication
>     > hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net> <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net>>:    cert:  "CN=IP-37fa1445fc.hdinsight-stable.azure-test.net <http://IP-37fa1445fc.hdinsight-stable.azure-test.net> <http://IP-37fa1445fc.hdinsight-stable.azure-test.net <http://IP-37fa1445fc.hdinsight-stable.azure-test.net>>"
>     > hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net> <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net>>:   remote: [CN=IP-37fa1445fc.hdinsight-stable.azure-test.net <http://IP-37fa1445fc.hdinsight-stable.azure-test.net> <http://IP-37fa1445fc.hdinsight-stable.azure-test.net <http://IP-37fa1445fc.hdinsight-stable.azure-test.net>>] uses public key authentication
>     > hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net> <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net>>:    cert:  "CN=IP-37fa1445fc.hdinsight-stable.azure-test.net <http://IP-37fa1445fc.hdinsight-stable.azure-test.net> <http://IP-37fa1445fc.hdinsight-stable.azure-test.net <http://IP-37fa1445fc.hdinsight-stable.azure-test.net>>"
>     > hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net> <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net>>:   child:  dynamic === dynamic TRANSPORT
>     > hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net> <http://hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net>>:  10.0.0.14...10.0.0.14  IKEv2
>     > hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net> <http://hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net>>:   local:  [CN=IP-37fa1445fc.hdinsight-stable.azure-test.net <http://IP-37fa1445fc.hdinsight-stable.azure-test.net> <http://IP-37fa1445fc.hdinsight-stable.azure-test.net <http://IP-37fa1445fc.hdinsight-stable.azure-test.net>>] uses public key authentication
>     > hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net> <http://hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net>>:    cert:  "CN=IP-37fa1445fc.hdinsight-stable.azure-test.net <http://IP-37fa1445fc.hdinsight-stable.azure-test.net> <http://IP-37fa1445fc.hdinsight-stable.azure-test.net <http://IP-37fa1445fc.hdinsight-stable.azure-test.net>>"
>     > hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net> <http://hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net>>:   remote: [CN=IP-37fa1445fc.hdinsight-stable.azure-test.net <http://IP-37fa1445fc.hdinsight-stable.azure-test.net> <http://IP-37fa1445fc.hdinsight-stable.azure-test.net <http://IP-37fa1445fc.hdinsight-stable.azure-test.net>>] uses public key authentication
>     > hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net> <http://hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net>>:    cert:  "CN=IP-37fa1445fc.hdinsight-stable.azure-test.net <http://IP-37fa1445fc.hdinsight-stable.azure-test.net> <http://IP-37fa1445fc.hdinsight-stable.azure-test.net <http://IP-37fa1445fc.hdinsight-stable.azure-test.net>>"
>     > hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net> <http://hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net>>:   child:  dynamic === dynamic TRANSPORT
>     > /*Routed Connections:
>     > hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net> <http://hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net>>{2}:  ROUTED, TRANSPORT, reqid 2
>     > hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net> <http://hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn1-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net>>{2}: 10.0.0.14/32 <http://10.0.0.14/32> <http://10.0.0.14/32 <http://10.0.0.14/32>> === 10.0.0.14/32 <http://10.0.0.14/32> <http://10.0.0.14/32 <http://10.0.0.14/32>>
>     > hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net> <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net>>{1}:  ROUTED, TRANSPORT, reqid 1
>     > hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net> <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net>>{1}: 10.0.0.14/32 <http://10.0.0.14/32> <http://10.0.0.14/32 <http://10.0.0.14/32>> === 10.0.0.15/32 <http://10.0.0.15/32> <http://10.0.0.15/32 <http://10.0.0.15/32>>*/
>     > Security Associations (1 up, 0 connecting):
>     > hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net> <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net>>[11]: ESTABLISHED 26 minutes ago, 10.0.0.14[CN=IP-37fa1445fc.hdinsight-stable.azure-test.net <http://IP-37fa1445fc.hdinsight-stable.azure-test.net> <http://IP-37fa1445fc.hdinsight-stable.azure-test.net <http://IP-37fa1445fc.hdinsight-stable.azure-test.net>>]...10.0.0.15[CN=IP-37fa1445fc.hdinsight-stable.azure-test.net <http://IP-37fa1445fc.hdinsight-stable.azure-test.net> <http://IP-37fa1445fc.hdinsight-stable.azure-test.net <http://IP-37fa1445fc.hdinsight-stable.azure-test.net>>]
>     > hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net> <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net>>[11]: IKEv2 SPIs: 1536ce9853bef399_i c00b62dfefa5f4ce_r*, public key reauthentication in 7 hours
>     > hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net> <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net>>[11]: IKE proposal: AES_CBC_256/HMAC_SHA2_256_128/PRF_HMAC_SHA2_256/MODP_2048
>     > hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net> <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net>>{3}:  INSTALLED, TRANSPORT, reqid 1, ESP SPIs: c73ba254_i c0ffd04a_o
>     > hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net> <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net>>{3}:  AES_CBC_256/HMAC_SHA2_256_128, 44961 bytes_i (822 pkts, 0s ago), 193357 bytes_o (570 pkts, 1557s ago), rekeying in 7 hours
>     > hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net> <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net <http://hn0-kkafka.p0gi1uxxaaeebnlz4hfuq0bvkf.dx.internal.cloudapp.net>>{3}: 10.0.0.14/32 <http://10.0.0.14/32> <http://10.0.0.14/32 <http://10.0.0.14/32>> === 10.0.0.15/32 <http://10.0.0.15/32> <http://10.0.0.15/32 <http://10.0.0.15/32>>
>     >
>     >
>     > Charon logs:
>     > -----------------
>     >
>     > May 11 21:23:20 hn1-kkafka charon: 09[NET] received packet: from 10.0.0.18[500] to 10.0.0.14[500] (536 bytes)
>     > May 11 21:23:20 hn1-kkafka charon: 09[ENC] parsed IKE_SA_INIT request 0 [ SA KE No N(NATD_S_IP) N(NATD_D_IP) V V V V ]
>     > May 11 21:23:20 hn1-kkafka charon: 09[IKE] /*no IKE config found for 10.0.0.14...10.0.0.18, sending NO_PROPOSAL_CHOSEN*/
>     > May 11 21:23:20 hn1-kkafka charon: 09[ENC] generating IKE_SA_INIT response 0 [ N(NO_PROP) ]
>     > May 11 21:23:20 hn1-kkafka charon: 09[NET] sending packet: from 10.0.0.14[500] to 10.0.0.18[500] (36 bytes)
>     >
>     > --karuna
>     >
>

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