You can configure a number of network sharing services on your RHEL computer. Apache is the most important Web server on the Internet. Squid allows you to save bandwidth.
Apache was developed from the NCSA Web server. Once the appropriate packages are installed, you can access a structure and sample Web pages in the /var/ www/html directory, based on the /etc/httpd/conf/httpd.conf configuration file. The httpd.conf file is organized in containers. You can create virtual hosts for multiple Web sites on your computer, even if you have only one IP address.
Squid is a proxy server that allows a network to filter its HTTP and FTP traffic through a cache. Requests are taken from the cache when possible. This reduces the load between the LAN and the Internet, reducing your network costs. When users access cached files, they get better performance from the external network.
As the RHCE is a performance-based exam, it is important to practice all the skills discussed in this chapter. You may need to use these skills on the exam!