Let’s Encrypt

página do projeto

• https://letsencrypt.org/

baixando código

apt-get install git-core
git clone https://github.com/letsencrypt/letsencrypt
cd letsencrypt

gerando a chave

sudo ./letsencrypt-auto certonly -d seudominio.com.br -d www.seudominio.com.br --manual

depois acessa em http://seudominio.com.br/.well-known/acme-challenge/26bs4LFnqRp2eGXMaNeAkH19qLggg_gpeCi_aKG4RvsUQ

no nginx

listen 443 ssl;
ssl on;
ssl_certificate /etc/letsencrypt/live/seudominio.com.br/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/seudominio.com.br/privkey.pem;

no apache

SSLCertificateKeyFile /etc/letsencrypt/live/seudominio.com.br/privkey.pem
SSLCertificateFile /etc/letsencrypt/live/seudominio.com.br/cert.pem
SSLCertificateChainFile /etc/letsencrypt/live/seudominio.com.br/chain.pem

- falta colocar como auto-renovar, pois expira em 90 dias

• http://blog.héry.com/article23/use-haproxy-with-let-s-encrypt
• http://stackoverflow.com/questions/21773817/crontab-run-a-cronjob-quarterly
• http://serverfault.com/questions/129633/how-to-run-cron-job-every-3-months

Referências

• https://tiagohillebrandt.eti.br/lets-encrypt-certificado-ssl-gratuito-para-seu-site.html
• http://admin.cefala.org/blog/usando-o-lets-encrypt.html
• https://skrilnetz.net/how-to-get-free-ssl-certificates-on-ubuntu/
• https://www.digitalocean.com/community/tutorials/how-to-set-up-let-s-encrypt-certificates-for-multiple-apache-virtual-hosts-on-ubuntu-14-04
• http://www.slsmk.com/enabling-https-access-to-owncloud/