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Feature #1337

PFS DH group are not visible in ipsec status

Added by Jiri Zendulka over 4 years ago. Updated over 4 years ago.

Status:
Closed
Priority:
Normal
Assignee:
Tobias Brunner
Category:
libcharon
Target version:
5.4.0
Start date:
04.03.2016
Due date:
Estimated time:
Resolution:
Fixed

Description

Hello,

I set pfs dh-group in ipsec.conf file but I cannot see any remark about this in ipsec statusall. Syslog reports that pfs dh-group is configured.

Config:

conn ipsec2
         leftauth=psk
         rightauth=psk
         ikelifetime=3600
         keylife=3600
         rekeymargin=540
         rekeyfuzz=100%
         type=tunnel
         esp=aes128-sha1-modp1536
         keyexchange=ikev1
         right=192.168.7.10
         left=192.168.7.100
         leftsubnet=192.168.2.0/24
         rightsubnet=192.168.30.0/24
         auto=start
         leftfirewall=yes

Log:

...
2016-03-04 12:03:22 charon: 12[CFG] selecting proposal:
2016-03-04 12:03:22 charon: 12[CFG]   proposal matches
2016-03-04 12:03:22 charon: 12[CFG] received proposals: ESP:AES_CBC_128/HMAC_SHA1_96/MODP_1536/NO_EXT_SEQ
2016-03-04 12:03:22 charon: 12[CFG] configured proposals: ESP:AES_CBC_128/HMAC_SHA1_96/MODP_1536/NO_EXT_SEQ, ESP:AES_CBC_128/AES_CBC_192/AES_CBC_256/3DES_CBC/BLOWFISH_CBC_256/HMAC_SHA1_96/AES_XCBC_96/HMAC_MD5_96/NO_EXT_SEQ
2016-03-04 12:03:22 charon: 12[CFG] selected proposal: ESP:AES_CBC_128/HMAC_SHA1_96/MODP_1536/NO_EXT_SEQ
2016-03-04 12:03:22 charon: 12[CHD]   using AES_CBC for encryption
2016-03-04 12:03:22 charon: 12[CHD]   using HMAC_SHA1_96 for integrity
2016-03-04 12:03:22 charon: 12[CHD] adding inbound ESP SA
2016-03-04 12:03:22 charon: 12[CHD]   SPI 0xccb8b9b0, src 192.168.7.10 dst 192.168.7.100 
...

ipsec statusall:

Security Associations (1 up, 0 connecting):
      ipsec2[1]: ESTABLISHED 5 minutes ago, 192.168.7.100[192.168.7.100]...192.168.7.10[192.168.7.10]
      ipsec2[1]: IKEv1 SPIs: 049b7dff3b61cee7_i* 52576fef01e7f674_r, pre-shared key reauthentication in 40 minutes
      ipsec2[1]: IKE proposal: AES_CBC_128/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_2048
      ipsec2{1}:  INSTALLED, TUNNEL, reqid 1, ESP SPIs: ccb8b9b0_i c6c760e9_o
      ipsec2{1}:  AES_CBC_128/HMAC_SHA1_96, 0 bytes_i, 0 bytes_o, rekeying in 37 minutes
      ipsec2{1}:   192.168.2.0/24 === 192.168.30.0/24

Is the esp dh-group correctly configured/set?

Thanks.

History

#1 Updated by Tobias Brunner over 4 years ago

  • Tracker changed from Issue to Feature
  • Description updated (diff)
  • Category set to libcharon
  • Status changed from New to Closed
  • Assignee set to Tobias Brunner
  • Target version set to 5.4.0
  • Resolution set to Fixed

DH groups of CHILD_SAs were not logged until recently, see 5d7049b427 and #23 at Github.

#2 Updated by Jiri Zendulka over 4 years ago

Hi,

PFS DH group is visible only for IKEv1 not for IKEv2. See ipsec status bellow.

Status of IKE charon daemon (weakSwan 5.4.0, Linux 3.5.0-lsp-3.3.1, armv5tejl):
uptime: 115 minutes, since Apr 25 11:23:48 2016
malloc: sbrk 610304, mmap 0, used 131240, free 479064
worker threads: 11 of 16 idle, 5/0/0/0 working, job queue: 0/0/0/0, scheduled: 33
loaded plugins: charon nonce pem openssl kernel-netlink socket-default stroke vici updown
Listening IP addresses:
10.64.0.15
172.17.5.8
10.0.7.146
Connections:
ipsec1: 10.0.7.146...10.0.7.140 IKEv2
ipsec1: local: uses pre-shared key authentication
ipsec1: remote: uses pre-shared key authentication
ipsec1: child: 172.17.0.0/16 === 172.18.0.0/16 TUNNEL
Security Associations (1 up, 0 connecting):
ipsec1261: ESTABLISHED 2 minutes ago, 10.0.7.146[10.0.7.146]...10.0.7.140[10.0.7.140]
ipsec1261: IKEv2 SPIs: 39cc159ba3afe447_i* 725f7d67188b1238_r, pre-shared key reauthentication in 36 minutes
ipsec1261: IKE proposal: AES_CBC_128/HMAC_SHA2_256_128/PRF_HMAC_SHA2_256/MODP_3072
ipsec1{230}: INSTALLED, TUNNEL, reqid 181, ESP SPIs: c257a1a8_i c7d5a178_o
ipsec1{230}: DES_CBC/HMAC_SHA2_512_256, 0 bytes_i, 0 bytes_o, rekeying in 40 minutes
ipsec1{230}: 172.17.0.0/16 === 172.18.0.0/16

#3 Updated by Tobias Brunner over 4 years ago

PFS DH group is visible only for IKEv1 not for IKEv2. See ipsec status bellow.

Please read my response to the PR I linked above.

#4 Updated by Jiri Zendulka over 4 years ago

I didn't notice that second link which deals with IKEv2 and PFS DH group. Now I see.

Thanks.

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