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Generate IP Cert

This script generates a self-signed SSL certificate for an IP address.

Usage

Replace 127.0.0.1 with the desired IP:

curl -sS https://raw.githubusercontent.com/mnsmithuk/generate-ip-cert/master/generate-ip-cert.sh |
    bash -s 127.0.0.1

This will create three files: cert.pem, key.pem and pkcs8-key.pem.

Motivation

While it's easy to make a self-signed SSL certificate for a hostname, doing it for an IP address is a bit more complicated. I found several guides on Internet that didn't work for me, so here's the summary in one script.

Tested on macOS Catalina and Ubuntu.

References

The process of generating a SAN certificate is described here:

https://geekflare.com/san-ssl-certificate/
https://support.citrix.com/article/CTX135602

License

MIT