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See server SSL cert on connection? |
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TonyG
Beta Tester Joined: February 04 2004 Location: United States Status: Offline Points: 127 |
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Posted: January 29 2021 at 9:22am |
Once in a while I need to test a server with Telnet or SSH. For example, an HTTP server, SMTP, POP3, or IMAP where port 993=SSL. Of course I prefer to use AccuTerm! :)
On connection with SSL, a server will send out its SSL certificate during the handshake process. When the handshake is complete, we get the user-oriented interface, with "OK" or other RFC-compliant response. Is there a Setting in AccuTerm to use to see that data? Or, do we need to us a Debug version? As an example, from an OS CLI "openssl s_client -connect server:port". You should see at least the cert and TLS data. That's what I'd like to see in AccuTerm. Thanks! |
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Tony Gravagno Nebula Research & Development
TG@ Nebula-RnD . com http://Nebula-RnD.com/blog http://Twitter.com/TonyGravagno http://groups.google.com/group/mvdbms https://www.linkedin.com/groups/64935 |
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TonyG
Beta Tester Joined: February 04 2004 Location: United States Status: Offline Points: 127 |
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EDIT: I just noticed that I am running the debug version of 8.0.1020.
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Tony Gravagno Nebula Research & Development
TG@ Nebula-RnD . com http://Nebula-RnD.com/blog http://Twitter.com/TonyGravagno http://groups.google.com/group/mvdbms https://www.linkedin.com/groups/64935 |
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PSchellenbach
Admin Group Moderator Joined: December 15 2003 Location: United States Status: Offline Points: 2150 |
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Hi Tony - thanks for the question. I looked at this and I don't think you can use AccuTerm (telnet) to connect to https server to view the certificate details. AccuTerm's SSL/Telnet connection is a telnet session conducted within an SSL connection. I tried using that connection type to a normal web server running SSL, and even using the debug version, there is really not much useful information available. The actual SSL handshake appears to be exchanging binary data so OpenSSL is probably your best option. I actually used AccuTerm's telnet to install DD-WRT on an old router last weekend. The main tricks were to select the Binary option, Skip initial options, and Half Duplex. Thanks, Pete
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