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SSL Tips and Tricks - Revision history
2026-04-08T01:30:13Z
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Phenixops: /* SSL Tips and Tricks */
2021-10-26T20:14:31Z
<p><span dir="auto"><span class="autocomment">SSL Tips and Tricks</span></span></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 20:14, 26 October 2021</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== SSL Tips and Tricks ==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== SSL Tips and Tricks ==</div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">This is a list of useful commands to see information on SSL certificates</ins></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==== Issuer <br> ====</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==== Issuer <br> ====</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><code></div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><code></div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>openssl s_client -showcerts -connect www.<del style="font-weight: bold; text-decoration: none;">pladder</del>.<del style="font-weight: bold; text-decoration: none;">nl</del>:443 2>/dev/null | openssl x509 -noout -issuer</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>openssl s_client -showcerts -connect www.<ins style="font-weight: bold; text-decoration: none;">example</ins>.<ins style="font-weight: bold; text-decoration: none;">com</ins>:443 2>/dev/null | openssl x509 -noout -issuer</div></td></tr>
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Phenixops
https://www.phenixops.net/index.php?title=SSL_Tips_and_Tricks&diff=556&oldid=prev
Phenixops: Created page with "== SSL Tips and Tricks == ==== Issuer <br> ==== <code> openssl s_client -showcerts -connect www.pladder.nl:443 2>/dev/null | openssl x509 -noout -issuer </code> <br> ==== Su..."
2021-10-16T21:33:01Z
<p>Created page with "== SSL Tips and Tricks == ==== Issuer <br> ==== <code> openssl s_client -showcerts -connect www.pladder.nl:443 2>/dev/null | openssl x509 -noout -issuer </code> <br> ==== Su..."</p>
<p><b>New page</b></p><div>== SSL Tips and Tricks ==<br />
<br />
==== Issuer <br> ====<br />
<code><br />
openssl s_client -showcerts -connect www.pladder.nl:443 2>/dev/null | openssl x509 -noout -issuer<br />
</code> <br><br />
<br />
==== Subject | CN <br> ====<br />
<code><br />
openssl s_client -showcerts -connect www.example.com:443 2>/dev/null | openssl x509 -noout -subject<br />
</code> <br><br />
<br />
==== Validity date <br> ====<br />
<code><br />
openssl s_client -showcerts -connect www.example.com:443 2>/dev/null | openssl x509 -noout -dates<br />
</code> <br><br />
<br />
==== Full chain of the above ====<br />
<code><br />
openssl s_client -showcerts -connect www.example.com:443 2>/dev/null | openssl x509 -noout -issuer -subject -dates<br />
</code><br />
<br />
==== Full Certificate information <br> ====<br />
<code><br />
openssl s_client -showcerts -connect www.example.com:443<br />
</code> <br><br />
<br />
== Howto check certificates local ==<br />
<br />
==== Check for expire dates (rhel) <br> ====<br />
<code><br />
getcert list |grep expires<br />
</code> <br><br />
<br />
==== Check for a specific CA (rhel) <br> ====<br />
<code><br />
getcert list -c LOCAL<br />
</code> <br><br />
<br />
== Fingerprint a certificate ==<br />
<br />
==== Fingerprint with openssl ====<br />
<code><br />
openssl x509 -in cert.crt -noout -fingerprint<br />
SHA1 Fingerprint=4A:1B:26:1C:39:31:54:D8:7F:A3:13:5A:DC:46:31:35:69:E8:32:8B<br />
</code><br />
<br />
<br />
[[Category:SSL]]</div>
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