Strongswan 5.8.4. Odd issue connecting to a fortigate. The tunnel appears
to establish and the SA up. The fortigate shows phase1 and 2 complete but no
traffic is passing. The logs on the strongsan show something I'm not used to
seeing. It appears somehow that quickmode phase2 is responding on port 500
instead of 4500. But again, it appears to complete. Here the info from the
logs. Any ideas?
Jun 25 21:33:28 ip-100-105-8-167 charon: 07[ENC] generating QUICK_MODE response
2098315325 [ HASH SA No KE ID ID ]
Jun 25 21:33:28 ip-100-105-8-167 charon: 07[NET] sending packet: from
1.1.1.1[500] to 2.2.2.2[500] (380 bytes)
Jun 25 21:33:28 ip-100-105-8-167 charon: 08[NET] received packet: from
2.2.2.2[500] to 1.1.1.1[500] (60 bytes)
Jun 25 21:33:28 ip-100-105-8-167 charon: 08[ENC] parsed QUICK_MODE request
2098315325 [ HASH ]
Jun 25 21:33:28 ip-100-105-8-167 charon: 08[IKE] CHILD_SA sph-dr{71}
established with SPIs c2b7d129_i 0a24e7dd_o and TS 1.1.0.0/16 === 2.2.0.0/28
Jun 25 21:33:43 ip-100-105-8-167 charon: 06[IKE] sending DPD request
Jun 25 21:33:43 ip-100-105-8-167 charon: 06[ENC] generating INFORMATIONAL_V1
request 1996139877 [ HASH N(DPD) ]
Jun 25 21:33:43 ip-100-105-8-167 charon: 06[NET] sending packet: from
1.1.1.1[500] to 2.2.2.2[500] (92 bytes)
Jun 25 21:33:43 ip-100-105-8-167 charon: 16[NET] received packet: from
2.2.2.2[500] to 1.1.1.1[500] (92 bytes)
Jun 25 21:33:43 ip-100-105-8-167 charon: 16[ENC] parsed INFORMATIONAL_V1
request 3916210465 [ HASH N(DPD_ACK) ]
ipsec statusall:
sph-dr[56]: ESTABLISHED 4 seconds ago, 1.1.1.13.3.3.3]...2.2.2.2[2.2.2.2]
sph-dr[56]: IKEv1 SPIs: 92bf32eece46a7f9_i fb85b9ec02d6437f_r*,
pre-shared key reauthentication in 7 hours
sph-dr[56]: IKE proposal: AES_CBC_128/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_1536
sph-dr{71}: INSTALLED, TUNNEL, reqid 2, ESP SPIs: c2b7d129_i 0a24e7dd_o
sph-dr{71}: AES_CBC_128/HMAC_SHA1_96/MODP_1536, 0 bytes_i, 0 bytes_o,
rekeying in 7 hours
sph-dr{71}: 1.1.0.0/16 === 2.2.0.0/28
Doug Tucker
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