TCP Timeout

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TCP Timeout

Jacques Henry
Hello,

I saw the following lines in my log concerning a host trying to authenticate but it fails (see the last errors).

I assume it has to do with TCP time-out?
Is it because the machine is on a very slow network (or with high latency)?
If yes, can I circumvent this by playing with some parameters?

Thanks!

2014-12-02T08:41:12 AS-REQ host/hostname@MYDOMAIN from IPv4:10.0.0.6 for krbtgt/MYDOMAIN@MYDOMAIN
2014-12-02T08:41:12 Client sent patypes: REQ-ENC-PA-REP
2014-12-02T08:41:12 Looking for PK-INIT(ietf) pa-data -- host/hostname@MYDOMAIN
2014-12-02T08:41:12 Looking for PK-INIT(win2k) pa-data -- host/hostname@MYDOMAIN
2014-12-02T08:41:12 Looking for ENC-TS pa-data -- host/hostname@MYDOMAIN
2014-12-02T08:41:12 Need to use PA-ENC-TIMESTAMP/PA-PK-AS-REQ
2014-12-02T08:41:12 sending 323 bytes to IPv4:10.0.0.6
2014-12-02T08:41:12 AS-REQ host/hostname@MYDOMAIN from IPv4:10.0.0.6 for krbtgt/MYDOMAIN@MYDOMAIN
2014-12-02T08:41:12 Client sent patypes: ENC-TS, REQ-ENC-PA-REP
2014-12-02T08:41:12 Looking for PK-INIT(ietf) pa-data -- host/hostname@MYDOMAIN
2014-12-02T08:41:12 Looking for PK-INIT(win2k) pa-data -- host/hostname@MYDOMAIN
2014-12-02T08:41:12 Looking for ENC-TS pa-data -- host/hostname@MYDOMAIN
2014-12-02T08:41:12 ENC-TS Pre-authentication succeeded -- host/hostname@MYDOMAIN using aes256-cts-hmac-sha1-96
2014-12-02T08:41:12 ENC-TS pre-authentication succeeded -- host/hostname@MYDOMAIN
2014-12-02T08:41:12 AS-REQ authtime: 2014-12-02T08:41:12 starttime: unset endtime: 2014-12-02T18:41:10 renew till: unset
2014-12-02T08:41:12 Client supported enctypes: aes256-cts-hmac-sha1-96, aes128-cts-hmac-sha1-96, des3-cbc-sha1, arcfour-hmac-md5, using aes256-cts-hmac-sha1-96/aes256-cts-hmac-sha1-96
2014-12-02T08:41:12 Requested flags: renewable-ok, proxiable, forwardable
2014-12-02T08:41:12 sending 778 bytes to IPv4:10.0.0.6
2014-12-02T08:41:48 TGS-REQ host/hostname@MYDOMAIN from IPv4:10.0.0.6 for ldap/ldapserver@MYDOMAIN [canonicalize]
2014-12-02T08:41:48 TGS-REQ authtime: 2014-12-02T08:41:12 starttime: 2014-12-02T08:41:48 endtime: 2014-12-02T18:41:10 renew till: unset
2014-12-02T08:41:48 sending 778 bytes to IPv4:10.0.0.6
2014-12-02T08:42:05 TCP-connection from IPv4:10.0.0.6 expired after 4 bytes
2014-12-02T08:42:23 TCP-connection from IPv4:10.0.0.6 expired after 4 bytes
2014-12-02T08:42:40 TCP-connection from IPv4:10.0.0.6 expired after 4 bytes
2014-12-02T08:42:57 TCP-connection from IPv4:10.0.0.6 expired after 4 bytes
2014-12-02T08:43:14 TCP-connection from IPv4:10.0.0.6 expired after 4 bytes