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How To Generate Let’s Encrypt Free Wildcard Certificate Using Certbot on Ubuntu 16.04

Let’s Encrypt has recently started supporting wildcard certificates using its new ACME2 protocol. This means that you can have a single wildcard certificate like *.asknetsec.com and use it on all the other sub-domains like blog.askenetsec.comemail.asknetsec.com.

This makes is very easy to manage certificates for different sub-domains. Until now each sub-domain needed its own certificate generated for the specific sub-domain.

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