Hi,
I'm using the Debian GNU/Linux version of kerberized telnetd and
telnet and am trying to do kerberos based telnet logins. The steps I
follow are (1) kinit (2) telnet -F <telnet server>, but I get a failure.
Here are the gory details :
ken@sid:~$ klist
Ticket cache: FILE:/tmp/krb5cc_1000
Default principal: [EMAIL PROTECTED]
Valid starting Expires Service principal
01/13/03 13:36:15 01/13/03 23:35:38 [EMAIL PROTECTED]
Kerberos 4 ticket cache: /tmp/tkt1000
klist: You have no tickets cached
ken@sid:~$ telnet -F -k ebiz.austin.ibm.com ebiz.austin.ibm.com
Trying A.B.C.D...
Connected to ebiz.austin.ibm.com (A.B.C.D).
Escape character is '^]'.
telnetd: No authentication provided.
Connection closed by foreign host.
An ethereal trace shows the following exchange :
client --> server
Telnet commands :
Do Encryption Option
Will Encryption Option
Do Suppress Go Ahead
Will Terminal Type
Will Negotiate About Window Size
Will Terminal Speed
Will Remote Flow Control
Will Linemode
Will New Environment Option
Do Status
Will X Display Location
server --> client
Telnet commands :
Do Authentication Option
client --> server
Telnet commands :
Wont Authentication Option
server --> client
Telnet commands :
Will Encryption Option
Do Encryption Option
Send your Encryption Option
Will Suppress Go Ahead
Do Terminal Type
Do Negotiate About Window Size
Do Terminal Speed
Do Remote Flow Control
Dont Linemode
Do New Environment Option
Will Status
Do X Display Location
server --> client
Telnet commands :
Do Environment Option
client --> server
Telnet commands :
Encryption Option
Send your Encryption Option
Negotiate About Window Size
Heres my Negotiate About Window Size
Value: i\000F
client --> server
Telnet commands :
Wont Environment Option
server --> client
Telnet commands :
Terminal Speed
Send your Terminal Speed
X Display Location
Send your X Display Location
New Environment Option
Send your New Environment Option
Terminal Type
Send your Terminal Type
client --> server
Telnet commands :
Terminal Speed
Here's my Terminal Speed
Value: 38400,38400
X Display Location
Here's my X Display Location
Value: localhost:10.0
New Environment Option
Here's my New Environment Option
Value: \000DISPLAY\001localhost:10.0
Terminal Type
Here's my Terminal Type
Value: XTERM
server --> client
Data:
telnetd: No Authentication provided. \r\n
....and the server initiates a connection close.
telnetd is being started with a '-a user' option. Is this not the
right option for Kerberos authentication? Why does the client claim that
it wont do authentication?
Thanks,
Kenneth
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