Telnet SRA login related issue

[takCoder]

Excuse me i just founded similar thread on the list which says:

SRA is a login sequence that encrypts the password (something that regular
telnet doesn't do).  It's only is activated if the other end advertises
itself as a telnet server.
http://lists.freebsd.org/pipermail/freebsd-questions/2010-August/220796.html



the second part of my question now seems to be off-list..
Sorry for sending repeated and off-list question before enough googling..



On Thu, Jun 20, 2013 at 1:22 PM, takCoder <tak.official at gmail.com> wrote:

> Hi all,
>
> My question may sound dummish, excuse me, but would you please tell when
> exactly is telnet sra authentication involved??
>
> For example, is it possible to telnet to a Freebsd  machine via a Win node
> and set the connection to use SRA? or this is something in Freebsd world?
>
> As i see, when I telnet to my Freebsd machine from another Freebsd
> machine, SRA authentication get involved, and changes to pam.d/telnetd auth
> phase are applied on the session; but when i telnet to my machine from a
> Win node, using putty or Windows telnet client or SecureCRT as telnet
> client, SRA auth is not involved; pam.d/telnetd changes are not applied and
> pam.d/login changes are applied instead (just like when i use -X sra for
> telnetd to disable SRA and it uses system login).
> As i checked, for example "putty" doesn't have any config to use sra..
>
> It would be really kind of you to let me know what is exactly happening
> here.. Thank you..
>
> Best Regards,
> takCoder
>