On Tue, Nov 25, 2014 at 10:42:18AM -0700, Warren Young wrote:
It doesn’t look like CentOS 7’s in.telnetd supports this anyway. I base that on two bits of evidence:
The man page: " -a authmode ...not available in the current version.”
ldd /usr/sbin/in.telnetd doesn’t show that it’s linked to libgssapi.
You'd have to use the clients in krb5-appl-clients and the telnetd in krb5-appl-servers. The 'telnet' in krb5-appl-clients has an -x flag that encrypts the data stream.
I never use any of this anymore. In fact, the only reason why I used kerberized telnet was back before OpenSSH was as widespread, and encrypted telnet was less overhead on the really old Suns I used. I just wanted to point out that the 'telnet' protocol is more than plain text.