Add last missing blog post before switching blogs

source/tech/2014-05-17-checking-ssl-certificates-with-sni.md

@@ -0,0 +1,19 @@
+---
+title:  "Checking SSL certificates with SNI via OpenSSL"
+date:   2014-05-17 17:10:06
+lang: en
+categories: ssl sni openssl
+---
+
+To check the ssl certificate of a site which has 
+[SNI](https://en.wikipedia.org/wiki/Server_Name_Indication)
+enabled, just add the -servername parameter to the s\_client:
+
+{% highlight bash %}
+$ openssl s\_client -servername site.example.com -connect example.com:443
+{% endhighlight %}
+
+To see only the relevant parts of the certificate – well – grep for it:
+{% highlight bash %}
+$ openssl s_client -servername site.example.com -connect example.com:443 2>/dev/null|openssl x509 -text|grep -e "DNS:\|CN="
+{% endhighlight %}