Unix, Linux, DevOps , Cloud computing and BigData Knowledge-Base

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Securing DHCP server with Firewall ( RHEL5/6)

Before any of the clients can start obtaining an IP address from the DHCP server, you need to deal with the security requirements for the DHCP server. They include adding a firewall rule with iptables and disabling any SELinux options that prevent the DHCP service from...

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DHCP Server Configuration in Linux ( RHEL5/6)

One of the basics elements found on all networks is a Dynamic Host Configuration Protocol (DHCP) server, making it an important part of any network. DHCP makes network administration easy because you can make changes to a single point (the DHCP server) on your network and...

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Forwarding-Only DNS server Configuration in Linux – RHEL6

A forwarding-only server does not actually handle any queries, but instead just forwards them to the correct location. This might be something you see if you work for an ISP that handles thousands of requests at a time. Forwarding-only servers are actually the easiest to set...

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SLAVE DNS server Configuration in Linux

A slave DNS server is similar to a master DNS server. It can help with load balancing and provide redundancy should the master DNS server fail. Because it serves as a “secondary” DNS server, it actually pulls the necessary files from its master counterpart, making configuration...

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DNS Server Configuration in Linux

When you’re trying to access a website, you type in the name you are looking  for and it comes up. In the background, though, Domain Name Service (DNS) is what translates that website name into an IP address so that the site may be accessed. This...

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Troubleshooting FTP configuration in Linux

Once the FTP  setup is complete, you need to test the FTP server from one of the clients, Client01. To save time during the exam and when testing in the real world, you can use the command-line FTP client lftp.

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NFS Client Configuration in Linux

Setting up a client to use NFS is relatively simple when you have the NFS server in place. Let’s set up the Client01 system to use a share on the RHEL01 NFS server.

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Squid Web Proxy configuration in Linux

A proxy server is a device that usually sits between a client and the destination the user is trying to reach. It can provide security, anonymity, and even protection for the client behind the proxy. To help in this process is Squid, which is a web...

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Configuring Linux Web Services using Apache httpd

The most commonly used web server in the world today is Apache—and with good reason. Built with security in mind, Apache is a solid and stable web server that has been around for years. The module design allows for scalability and ease of use. Apache can...

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