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A MD5 hash is easy to generate with MD5SUM in linux. A etelnet
capable jnos transmits a hex number in the password prompt according
to the manual.<br>
I should monitor and log the etelnet session with wireshark to see
exactly what is going on.<br>
<br>
Bob VE3TOK<br>
<br>
<div class="moz-cite-prefix">On 2018-04-15 03:30 PM, Michael Fox -
N6MEF wrote:<br>
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<p class="MsoNormal">All,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’m trying to figure out how a generic
(non-JNOS) client would respond to the “Password […] :” prompt
issued by JNOS when MD5AUTHENTICATION is #define’d.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The response from a JNOS client appears to
be created in lines 358-361 of telnet.c. But I’m not
knowledgeable enough about C to understand what it’s doing.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">For example, suppose I was on a Linux or
Windows machine (not running JNOS) and I telnetted to a JNOS
machine that has MD5 AUTHENTICATION defined. I enter my login
at the login prompt. Then I get the “Password […] “ prompt.
Given the challenge in the password prompt and given that I
know my password, how would I calculate (i.e. what commands
would I run to generate) the appropriate MD5 response to the
prompt?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal">Michael - N6MEF<o:p></o:p></p>
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