{"id":259,"date":"2023-06-27T10:00:00","date_gmt":"2023-06-27T17:00:00","guid":{"rendered":"https:\/\/dejal.com\/blog\/?p=259"},"modified":"2023-05-29T17:55:43","modified_gmt":"2023-05-30T00:55:43","slug":"how-can-i-use-simon-to-check-for-an-expired-website-ssl-certificate","status":"publish","type":"post","link":"https:\/\/dejal.com\/blog\/how-can-i-use-simon-to-check-for-an-expired-website-ssl-certificate\/","title":{"rendered":"How can I use Simon to check for an expired website SSL certificate?"},"content":{"rendered":"

<\/p>\n

I received a customer query asking how to use Simon<\/a> to check for an expired website SSL certificate.<\/p>\n

Of course, Simon is very flexible, so even if there isn\u2019t a built-in service for this specific case, if you can do it in the Terminal<\/strong>, you can probably create a custom script-based service in Simon to do it, too.<\/p>\n

There are a number of ways to get certificate information, but this is one simple approach (if you know of a better way, let me know!).<\/p>\n

I created a new script-based service, using the basic C shell, a one-line command, and a custom variable for the host name:<\/p>\n

$\"Website$ <\/p>\n

I then created a new test using this service. When accessing a server with an expired certificate, the output includes a \u201cverify return code<\/code>\u201d message of \u201ccertificate has expired<\/code>\u201c, so I used a Block<\/strong> filter to look at just that text (I pasted \u201cVerify return code: <\/code>\u201d in the Start<\/strong> text, and an Option-Return<\/strong> in the End<\/strong> text), then a Find Required<\/strong> filter to make the test result in a failure if it doesn\u2019t find \u201cok<\/code>\u201c, and finally an Override Custom<\/strong> filter if a failure, to output the error message:<\/p>\n

<\/p>\n

For the success case, the last filter doesn\u2019t apply, so it just outputs the \u201cok<\/code>\u201d:<\/p>\n

<\/p>\n

Want to use this service? You can easily add it yourself, or import it by downloading from the Simon Extras page<\/a>.<\/p>\n

I hope you found the techniques in this post helpful.<\/p>\n

<\/p>\n<\/body>","protected":false},"excerpt":{"rendered":"