Using curl to Check an SSL Certificate's Expiration Date and Details

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Here's a quick way to make sure your load balancer or web server is serving the correct SSL cert.

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0:00 -- Intro
0:08 -- Assembling our curl command
0:43 -- Taking a look at the certificate's details
1:28 -- Parsing out the expiration date with grep and cut
4:10 -- Getting similar information in a browser
4:59 -- Burning the vI or Iv flags into muscle memory
5:35 -- Why? Your load balancer might support multiple certs
  1. Nick Janetakis
  2. curl
  3. ssl certificates
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Комментарии
Автор

Really helpful thanks. Had SSL issues recently and it's nice to have another tool in the belt for future troubleshooting

bluvven
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Awesome bro. Never stop your content. Please.

rapoliit
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Hi Nick. This was awesome. I loved it.

singerabantika
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Hi Nick, Very handy and very useful commands. Thanks for knowledge sharing. I really appreciate all your efforts and hard work. 🙏

Kylix-wybr
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Hi, Nick. It seems that due to an update, that command doesn't show the SSL cert information anymore. Any ideas? (my curl version is 7.83.1)

serjdaza
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Thanks this is helpful, is there a way to do automation with this command and check several web sites ssl cert expiration date let’s say every “x” amount of days and have the command email results?

ktube
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The curl method does not work if certificate has already expired. If you want to check the expiration date on the site for which the certificate has expired, curl will return a connection error.