I'm running Web Agent, which protects a resource with KerberosAuthentication scheme, and suddenly, the authentication doesn't workanymore and the Web Agent reports error :
@ Sun, 30 Sep 2018 02:09:41 +000
 1538273381.162330: Getting initial credentials forHTTP/duspa01-u171282.training.com@TRAINING.COM
 1538273381.162602: Setting initial creds service tokrbtgt/TRAINING.COM@TRAINING.COM
 1538273381.162700: Couldn't lookup etypes in keytab:13/Permission denied
 1538273381.260416: RetrievingHTTP/duspa01-u171282.training.com@TRAINING.COM from FILE:/etc/wa.keytab (vno 0, enctype rc4-hmac) with result:13/Permission denied
 1538273381.260425: Preauth module encrypted_timestamp (2)(flags=1) returned: 13/Permission denied
How can I fix this ?
We noted that the Web Agent OS date and time was in the future.
We changed the time back two days ago by restarting the ntp client onthe machine and the network clock set it as per the other machines toFri, 28 Sep 2018 11:47:01 +0000, and the permission denied issuedisapeared.
 1538135221.803975: Selected etype info: etype rc4-hmac, salt"", params ""
 1538135221.804095: RetrievingHTTP/duspa01-u171282.training.com@TRAINING.COM from FILE:/etc/wa.keytab (vno 0, enctype rc4-hmac) with result: 0/Success
 1538135221.804186: AS key obtained for encrypted timestamp:rc4-hmac/3086
KB : KB000118667