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...

• Install the packages needed to provide the service
• Configure SELinux to support the service
• Use SELinux port labeling to allow services to use non-standard ports
• Configure the service to start when the system is booted
• Configure the service for basic operation
• Configure host-based and user-based security for the service

HTTP/HTTPS

• Configure a virtual host
• Configure access restrictions on directories
• Deploy a basic CGI application
• Configure group-managed content
• Configure TLS security

DNS

• Configure a caching-only name server
• Troubleshoot DNS client issues

NFS

• Provide network shares to specific clients
• Provide network shares suitable for group collaboration
• Use Kerberos to control access to NFS network shares

...

• Install and configure MariaDB
• Backup and restore a database
• Create a simple database schema
• Perform simple SQL queries against a database

DNS

Caching Domain Name Service (DNS)

DNS servers comes in several types such as master, slave, forwarding and cache, to name a few examples, with cache-only DNS being the one that is easier to setup. The cache-only DNS server is also known as resolver, which will query DNS records and fetch all the DNS details from other servers, and keep each query request in its cache for later use so that when we perform the same request in the future, it will serve from its cache, thus reducing the response time even more.

https://www.tecmint.com/install-configure-cache-only-dns-server-in-rhel-centos-7/

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/linux_domain_identity_authentication_and_policy_guide/trouble-gen-dns

HTTP/HTTPS

Configure a virtual host

https://www.certdepot.net/rhel7-configure-apache-virtual-host/

https://www.linux.com/blog/multiple-virtual-hosts-centos-7-or-rhel-7

Deploy a basic CGI application

https://www.certdepot.net/rhel7-deploy-apache-basic-cgi-application/

Configure access restrictions on directories

https://www.certdepot.net/rhel7-configure-apache-private-directories/

Configure group-managed content

https://www.certdepot.net/rhel7-configure-apache-group-managed-content/

Configure TLS security

https://access.redhat.com/documentation/en-us/red_hat_jboss_a-mq/6.2/html/security_guide/fmqsecurityssl

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/system_administrators_guide/ch-web_servers

Reference

https://www.redhat.com/en/services/training/ex300-red-hat-certified-engineer-rhce-exam

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/system_administrators_guide/