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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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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Master DNS Server Configuration in Linux

The Configuration mentioned in this post is part of the post “DNS Server Configuration in Linux“ A master server is the basis for the DNS infrastructure. It provides a place to define all DNS records and extend them to secondary servers that can help with load...

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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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