rdesktop 172.28.128.103 problems on Trunks

[jtsec92]

I have managed to upload the webshell .war file onto the Tomcat server and I have executed all of the commands that grant write privileges to the BUILTIN\Administrators group however when I try to run rdesktop 172.28.128.103 I run into the errors:

Autoselected keyboard map en-us
ERROR: CredSSP: Initialize failed, do you have correct kerberos tgt initialized ?
Failed to connect, CredSSP required by server.

when I run xfreerdp /u:"Trunks" /p:"PasW0rd654#" /v:172.28.128.103 I get:

Autoselected keyboard map en-us
ERROR: CredSSP: Initialize failed, do you have correct kerberos tgt initialized ?