Cannot contact any KDC in realm

[Mauricio Tavares]

On Mon, Apr 21, 2014 at 1:03 PM, kannan rbk <kannanrbk.r at gmail.com> wrote:
> Dear Team,
>
> I am trying to connect a remote machine (using kerberos
> authentication) using ssh. But , I cannot able to connect the machine.
> It is the below ssh trace.
>
>  OpenSSH_6.2p2, OSSLShim 0.9.8r 8 Dec 2011
>     debug1: Reading configuration data /Users/bharathi/.ssh/config
>     debug1: Reading configuration data /etc/ssh_config
>     debug1: /etc/ssh_config line 17: Applying options for *
>     debug1: Connecting to 192.168.15.14 [192.168.15.14] port 22.
>     debug1: Connection established.
>     debug1: identity file /Users/bharathi/.ssh/id_rsa type -1
>     debug1: identity file /Users/bharathi/.ssh/id_rsa-cert type -1
>     debug1: identity file /Users/bharathi/.ssh/id_dsa type -1
>     debug1: identity file /Users/bharathi/.ssh/id_dsa-cert type -1
>     debug1: Enabling compatibility mode for protocol 2.0
>     debug1: Local version string SSH-2.0-OpenSSH_6.2
>     debug1: Remote protocol version 2.0, remote software version OpenSSH_5.3
>     debug1: match: OpenSSH_5.3 pat OpenSSH_5*
>     debug1:  Miscellaneous failure (see text)
>     unable to reach any KDC in realm ZMEDIA.COM, tried 3 KDCs
>
>     debug1:  An invalid name was supplied
>     unknown mech-code 0 for mech 1 2 752 43 14 2
>
>     debug1:  Miscellaneous failure (see text)
>     unknown mech-code 0 for mech 1 3 6 1 5 5 14
>
>     debug1:  Miscellaneous failure (see text)
>     unknown mech-code 2 for mech 1 3 6 1 4 1 311 2 2 10
>
>     debug1:  An unsupported mechanism was requested
>     unknown mech-code 0 for mech 1 3 5 1 5 2 7
>
>     debug1:  Miscellaneous failure (see text)
>     unknown mech-code 0 for mech 1 3 6 1 5 2 5
>
>     debug1: SSH2_MSG_KEXINIT sent
>     debug1: SSH2_MSG_KEXINIT received
>     debug1: kex: server->client aes128-ctr hmac-md5 none
>     debug1: kex: client->server aes128-ctr hmac-md5 none
>     debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
>     debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
>     Connection closed by 192.168.15.14
>
>
> Remote Machine : Cent Os 6.4 final
>
> Client Machine : Mac OS X 10.9
>
>
> Please help me to fix the problem. This problem is intermittent ,
> sometimes I can able to connect the machine.
>
      Are you connecting using its FQDN or IP? Can you check if both
machine's krb.conf files are similar?

> If you need any other information , let me know.
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