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How to get the public certificate

Posted on 2011-02-27
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Last Modified: 2012-06-27
Hello I am trying to use the openssl s_client option to see the public file of one host which is running on port 1234. Please note this is not web server but a application which uses the SSL cert. How can I see the cert of this app on host on 1234? I am getting below errors. Thanks!

user@hostname:~$ openssl s_client -connect example.company.com:1234
CONNECTED(00000003)
depth=1 /C=US/ST=California/L=San Jose/O=Company, Inc./OU=IT/CN=IT DEV CA/emailAddress=webmasters@company.com
verify error:num=19:self signed certificate in certificate chain
verify return:0
27556:error:14094410:SSL routines:SSL3_READ_BYTES:sslv3 alert handshake failure:s3_pkt.c:1102:SSL alert number 40
27556:error:140790E5:SSL routines:SSL23_WRITE:ssl handshake failure:s23_lib.c:188:

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Question by:beer9
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Expert Comment

by:gnurl
ID: 34994646
Hi,

this is nor really my source of interest, but did you already try to access the https://example.company.com:1234
in a webbrowser, even if it is not a web server? Maybe the browser can handle it, too?

Good luck
gnurl
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Expert Comment

by:Dave Howe
ID: 34997523
effectively you ARE seeing it - its the line:

depth=1 /C=US/ST=California/L=San Jose/O=Company, Inc./OU=IT/CN=IT DEV CA/emailAddress=webmasters@company.com

however, if you want to see the full cert, add

-showcerts

to the command :)
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Author Comment

by:beer9
ID: 34998288
Hi DaveHow, I tried with -showcerts but still getting the same error.

verify error:num=19:self signed certificate in certificate chain
verify return:0
29827:error:14094410:SSL routines:SSL3_READ_BYTES:sslv3 alert handshake failure:s3_pkt.c:1102:SSL alert number 40
29827:error:140790E5:SSL routines:SSL23_WRITE:ssl handshake failure:s23_lib.c:188:

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Accepted Solution

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Dave Howe earned 2000 total points
ID: 35002055
odd, just did
openssl -connect 127.0.0.1:143 -showcerts
here and it worked perfectly. try with -debug instead to see if that gives any further information?
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Author Closing Comment

by:beer9
ID: 35059621
Thank you! :-)
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