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ipsec strongswan debian LXC：收到 NO_PROPOSAL_CHOSEN 通知错误

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ipsec strongswan debian LXC：收到 NO_PROPOSAL_CHOSEN 通知错误

我正在尝试在同一物理服务器（Debian 也是如此）上的两个 LXC Debian Jessie 之间设置 IPSec 隧道。这是我的网络拓扑：

172.17.23.0/24 ---- 172.17.23.100 - VPN1 - 10.73.52.1 ==== 10.73.53.2 - VPN2 - 192.168.100.100 ---- 192.168.100.0/24

VPN1 和 VPN2 上的配置相同，我使用预共享密钥进行身份验证：

/etc/ipsec.conf 配置设置 charondebug="all" uniqueids=yes

conn %default

conn testconn
  left=10.73.53.1
  leftsubnet=172.17.23.0/24
  right=10.73.53.2
  rightsubnet=192.168.100.0/24
  ike=aes128-sha1-modp1024
  esp=aes128-sha1
  keyingtries=0
  ikelifetime=60m
  auto=start
  closeaction=restart
  keylife=20m
  rekeymargin=3m
  keyexchange=ike
  mobike=no
  authby=secret
  type=tunnel

/etc/ipsec.secrets 10.73.53.1 10.73.53.2 : PSK “PasswordHere”

我启动双方ipsec start并建立text连接ipsec up

root@vpn1:~# ipsec up testconn
initiating IKE_SA testconn[3] to 10.73.53.2
generating IKE_SA_INIT request 0 [ SA KE No N(NATD_S_IP) N(NATD_D_IP) ]
sending packet: from 10.73.53.1[500] to 10.73.53.2[500] (304 bytes)
received packet: from 10.73.53.2[500] to 10.73.53.1[500] (36 bytes)
parsed IKE_SA_INIT response 0 [ N(NO_PROP) ]
received NO_PROPOSAL_CHOSEN notify error
establishing connection 'testconn' failed
Idem pour vpn2.

我在系统日志中收到了类似的消息。

我不明白为什么我会得到这个NO_PROPOSAL_CHOSEN，因为我正试图强制选择文件中使用的算法/etc/ipsec.conf！

非常感谢您的帮助，如需更多信息，请随时询问。

编辑：这是从 VPN2（接收连接）的 /var/log/syslog 中提取的：

vpn2 charon: 07[NET] sending packet: from 10.73.53.2[500] to 10.73.53.1[500] (940 bytes)
vpn2 charon: 09[NET] received packet: from 10.73.53.1[500] to 10.73.53.2[500] (36 bytes)
vpn2 charon: 09[ENC] parsed IKE_SA_INIT response 0 [ N(NO_PROP) ]
vpn2 charon: 09[IKE] received NO_PROPOSAL_CHOSEN notify error
vpn2 charon: 10[NET] received packet: from 10.73.53.254[500] to 10.73.53.2[500] (940 bytes)
vpn2 charon: 10[ENC] parsed IKE_SA_INIT request 0 [ SA KE No N(NATD_S_IP) N(NATD_D_IP) ]
vpn2 charon: 10[IKE] no IKE config found for 10.73.53.2...10.73.53.254, sending NO_PROPOSAL_CHOSEN

我明白了no IKE config found，谷歌搜索没有太大帮助 :/

EDIT2：这是输出ipsec statusall：

root@vpn1:~# ipsec statusall
Status of IKE charon daemon (strongSwan 5.2.1, Linux 3.16.0-4-amd64, x86_64):
  uptime: 46 minutes, since Dec 15 14:56:02 2017
  malloc: sbrk 2408448, mmap 0, used 310128, free 2098320
  worker threads: 11 of 16 idle, 5/0/0/0 working, job queue: 0/0/0/0, scheduled: 0
  loaded plugins: charon aes rc2 sha1 sha2 md5 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 stroke updown
Listening IP addresses:
  172.17.23.10
  10.73.53.1
Connections:
    test:  10.73.53.1...10.73.53.2  IKEv1/2
    test:   local:  [10.73.53.1] uses pre-shared key authentication
    test:   remote: [10.73.53.2] uses pre-shared key authentication
    test:   child:  172.17.23.0/24 === 192.168.100.0/24 TUNNEL
Security Associations (0 up, 0 connecting):
  none
root@vpn1:~#

我在服务器 VPN2 上有完全相同的操作（除了 172.17.23.0/24 更改为 192.168.100.0/24，它是 VPN2 端的本地子网）。

答案1

它与 strongswan 服务器上的配置的连接尝试不匹配。

如果运行“ipsec statusall”，输出结果是什么？命令可能是“strongswan statusall”——似乎每个发行版都不同，它会显示你已加载的配置

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