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</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span style='color:#1F497D'>Yes, but the question is, what goes into the hash? And, looking at the C code, it looks like the length might be truncated, but how long?<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Michael N6MEF<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='color:windowtext'>From:</span></b><span style='color:windowtext'> Boudewijn (Bob) Tenty <bobtenty@gmail.com> <br><b>Sent:</b> Monday, April 16, 2018 12:26 PM<br><b>To:</b> Michael Fox - N6MEF <n6mef@mefox.org><br><b>Subject:</b> Re: [nos-bbs] MD5 Authentication Response<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'>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<o:p></o:p></p><div><p class=MsoNormal>On 2018-04-15 03:30 PM, Michael Fox - N6MEF wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><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><p class=MsoNormal><br><br><br><o:p></o:p></p><pre>_______________________________________________<o:p></o:p></pre><pre>nos-bbs mailing list<o:p></o:p></pre><pre><a href="mailto:nos-bbs@tapr.org">nos-bbs@tapr.org</a><o:p></o:p></pre><pre><a href="http://www.tapr.org/mailman/listinfo/nos-bbs">http://www.tapr.org/mailman/listinfo/nos-bbs</a><o:p></o:p></pre></blockquote><p class=MsoNormal><o:p> </o:p></p></div></div></body></html>