Nginx ssl config

nginx-ssl-config-COMODO.md

The process starts by creating the CSR and the private key:

openssl req -nodes -newkey rsa:2048 -keyout mydomain.com.key -out mydomain.com.csr

Generates

• mydomain.com.key
• mydomain.com.csr

After validation, you will get a zip file with 4 files:

• AddTrustExternalCARoot.crt
• COMODORSAAddTrustCA.crt
• COMODORSADomainValidationSecureServerCA.crt
• mydomain_com.crt

We have to create a certificate with all the intermediate certs.

# order is important!
cat mydomain_com.crt COMODORSADomainValidationSecureServerCA.crt COMODORSAAddTrustCA.crt AddTrustExternalCARoot.crt > mydomain.com.pem

Once we have this pem file, we can configure nginx:

ssl    on; 
ssl_certificate         /etc/nginx/keys/mydomain.com.pem;
ssl_certificate_key     /etc/nginx/keys/mydomain.com.key;

ssl_protocols TLSv1 TLSv1.1 TLSv1.2;

ssl_session_cache shared:SSL:1m;
ssl_session_timeout  5m;

Then you just have to restart nginx:

sudo service nginx configtest
sudo service nginx restart

Use openssl s_client command to verify ssl:

openssl s_client -connect www.mydomain.com:443