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The way to safe Apache with Let’s Encrypt Certificates on RHEL eight

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I learn that Let’s Encrypt is a free, automated, and open certificates for net server and different usages. How do I safe Apache with Let’s Encrypt Certificates on RHEL eight?

Introduction – Let’s Encrypt is a free, automated, and open certificates authority on your web site powered by Apache net server. This web page reveals the way to use Let’s Encrypt to put in a free SSL certificates for Apache net server. You’ll learn to correctly deploy Diffie-Hellman in your server to get SSL labs A+ rating on an RHEL eight.

The way to set up Let’s Encrypt SSL certificates to safe Apache on RHEL eight

Our pattern setup is as follows:
How to Install Let's Encrypt SSL Certificate to Secure Apache on RHEL 9Safe Apache with Let’s Encrypt on RHEL eight

The way to safe Apache with Let’s Encrypt Certificates on RHEL eight

The process is as follows to acquiring an SSL certificates:

Set up SSL/TLS module for the Apache HTTP server in RHEL eight: sudo dnf set up mod_sslGet acme.sh software program on RHEL eight: git clone https://github.com/Neilpang/acme.sh.gitCreate a brand new /.well-known/acme-challenge/ listing utilizing: mkdir -p /var/www/html/.well-known/acme-challenge/Receive an SSL certificates your area: acme.sh –issue -w /DocumentRootPath/ -d your-domainConfigure TLS/SSL for Apache on RHEL eight: vi /and many others/httpd/conf.d/ssl.confSetup a cron job for auto renewal of SSL/TLS certificateOpen port 443 (HTTPS):sudo firewall-cmd –add-service=https

Allow us to see the way to set up acme.sh shopper and apply it to a RHEL eight to get an SSL certificates from Let’s Encrypt.

Step 1 – Set up mod_ssl for the Apache

Sort the next dnf command:
$ sudo dnf set up mod_ssl
How to install mod_ssl on RHEL 8

Step 2 – Set up acme.sh Let’s Encrypt shopper

It’s worthwhile to set up wget on RHEL eight, curl, bc, socat and git shopper on RHEL eight so as use acme.sh, run:
$ sudo dnf set up wget curl bc git socat

Clone the repo

$ cd /tmp/
$ git clone https://github.com/Neilpang/acme.sh.git
Subsequent, set up acme.sh shopper on to your system, run:
$ cd acme.sh/
$ sudo -i
# cd acme.sh/
# ./acme.sh –install
How to setup Let's Encrypt certificates on RHEL with acme.sh
Now we’ve got wanted software program on the RHEL eight field. You could shut the present terminal or ssh session and reopen once more to make the alias take impact. Or sort the next supply command:
$ sudo supply ~/.bashrc
Confirm that acme.sh working, run:
# acme.sh –list

Step three – Create acme-challenge listing

Sort the next mkdir command. Ensure you set D to precise DocumentRoot path as per your wants:
# D=/var/www/html/
# mkdir -vp $/.well-known/acme-challenge/
###—[ NOTE: Alter permission as per your setup ]—###
# chown -R apache:apache $/.well-known/acme-challenge/
# chmod -R 0555 $/.well-known/acme-challenge/
Additionally, create a listing to retailer SSL certificates:
# mkdir -p /and many others/httpd/ssl/cyberciti.biz/

Step four – Create dhparams.pem file

Run the openssl command:
# cd /and many others/httpd/ssl/cyberciti.biz/
# openssl dhparam -out dhparams.pem -dsaparam 4096

The way to velocity up OpenSSL/GnuPG Entropy For Random Quantity Era On Linux

Step 5 – Receive a SSL/TLS certificates for area

Situation a certificates on your area. The syntax is:
# acme.sh –issue -w /path/to/www/htmlRoot/ -d your-domain-example-com -k 2048
# acme.sh –issue -w /path/to/www/htmlRoot/ -d www.cyberciti.biz -k 4096
# acme.sh –issue -w /var/www/html/ -d rhel8.cyberciti.biz -k 4096
Create a free Apache SSL certificate with Let's Encrypt on RHEL 8Requesting a free Apache SSL certificates with Let’s Encrypt on RHEL eight (click on to enlarge)

Step 6 – Configure Apache to make use of SSL/TLS

Edit the file named /and many others/httpd/conf.d/ssl.conf utilizing a textual content editor comparable to vi command:
$ sudo vi /and many others/httpd/conf.d/ssl.conf
Append/replace as follows:

### Begin config for port 443 #
Hear 443 https
SSLPassPhraseDialog exec:/usr/libexec/httpd-ssl-pass-dialog
SSLSessionCache shmcb:/run/httpd/sslcache(512000)
SSLSessionCacheTimeout 300
SSLCryptoDevice builtin
 
### Activate HTTP2 assist #
Protocols h2 http/1.1
 
### Redirect all http urls to https #
RewriteEngine On
RewriteCond % off
RewriteRule (.*) https://%% [R=302,L,QSA]
#################################################
# SSL/TLS config for area rhel8.cyberciti.biz #
#################################################
<VirtualHost rhel8.cyberciti.biz:443>
 
### Log information #
ErrorLog logs/ssl_error_log
TransferLog logs/ssl_access_log
LogLevel warn
SSLEngine on
 
### No extra SSL3/2 #
SSLProtocol all -SSLv3
SSLHonorCipherOrder on
SSLCompression off
SSLSessionTickets off
SSLCipherSuite ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES256-SHA:ECDHE-ECDSA-DES-CBC3-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:DES-CBC3-SHA:!DSS
 
### Path to certs #
SSLCertificateFile /and many others/httpd/ssl/cyberciti.biz/rhel8.cyberciti.biz.cer
SSLCertificateKeyFile /and many others/httpd/ssl/cyberciti.biz/rhel8.cyberciti.biz.key
 
#Ahead Secrecy & Diffie Hellman ephemeral parameters
SSLOpenSSLConfCmd DHParameters “/and many others/httpd/ssl/cyberciti.biz/dhparams.pem”
 
# HSTS (mod_headers is required) (15768000 seconds = 6 months)
Header all the time set Strict-Transport-Safety “max-age=15768000”
<FilesMatch “.(cgi|shtml|phtml|php)$”>
SSLOptions +StdEnvVars
FilesMatch>
<Listing “/var/www/cgi-bin”>
SSLOptions +StdEnvVars
Listing>
BrowserMatch “MSIE [2-5]”
nokeepalive ssl-unclean-shutdown
downgrade-1.zero force-response-1.zero
CustomLog logs/ssl_request_log
“%t %h %x %x %r %b”
VirtualHost>
 
### OCSP stapling config
SSLUseStapling on
SSLStaplingResponderTimeout 5
SSLStaplingReturnResponderErrors off
SSLStaplingCache shmcb:/var/run/ocsp(128000)

Save and shut the file and exit from vim textual content editor.

A be aware about safer SSL choices

Replace above config as follows to disable SSL and TLS model 1/1.1:

SSLProtocol all -SSLv3 -TLSv1 -TLSv1.1
SSLCipherSuite ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256

Please see this web page for more information.

Step 7 – Set up certificates

Sort the next command:
# acme.sh –installcert -d rhel8.cyberciti.biz
–keypath /and many others/httpd/ssl/cyberciti.biz/rhel8.cyberciti.biz.key
–fullchainpath /and many others/httpd/ssl/cyberciti.biz/rhel8.cyberciti.biz.cer
–reloadcmd ‘systemctl reload httpd’
Install and secure Apache with Let's Encrypt certificates

Now our Apache up and operating with mod_ssl. It’s time to open TCP port # 443 (HTTPS) on RHEL eight field in order that purchasers can hook up with it. Replace the principles as follows:
$ sudo firewall-cmd –permanent –add-service=https –zone=public
$ sudo firewall-cmd –reload
$ sudo firewall-cmd –list-services –zone=public
How to open HTTPS port 443 using firewalld on RHEL 8Use a firewalld device to open https port 443
Confirm that port 443 and 80 open and itemizing state with the assistance of ss command together with the grep command/egrep command:
$ sudo ss -tulpn
$ sudo ss -tulpn | egrep ‘:(80|443)’

Step 9 – Check it

Hearth an internet browser and sort your area comparable to:
https://rhel8.cyberciti.biz
rhel8.cyberciti.biz HTTPS testHTTPS primarily based website in motion
Check it with SSLlabs check website:
https://www.ssllabs.com/ssltest/analyze.html?d=rhel8.cyberciti.biz
Getting an A+ rating on ssllabs ssltest

Step 10 – acme.sh instructions

Record all SSL/TLS certificates, run:
# acme.sh –list
Renew a cert for area named server2.cyberciti.biz
# acme.sh –renew -d rhel8.cyberciti.biz
Please be aware cron job will attempt to do renewal a certificates for you too. That is put in by default as follows (no motion required in your half). To see job run:
# crontab -l
Pattern outputs:

38 zero * * * “/root/.acme.sh”/acme.sh –cron –home “/root/.acme.sh” > /dev/null

Improve acme.sh shopper:
# acme.sh –upgrade
Getting assist:
# acme.sh –help | extra

Conclusion

This web page confirmed the way to set up a free SSL/TSL certificates from Let’s Encrypt to safe communication between Apache and browsers, on an RHEL eight server. For more information see Apache mod_ssl paperwork right here.

Posted by: Vivek Gite

The writer is the creator of nixCraft and a seasoned sysadmin, DevOps engineer, and a coach for the Linux working system/Unix shell scripting. Get the newest tutorials on SysAdmin, Linux/Unix and open supply subjects through RSS/XML feed or weekly electronic mail publication.

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