IP CIDR FORMAT

CIDR format?

Contributed by Dru Lavigne, DNSstuff Contributing Writer
Wednesday, 28 March 2007

When reading IP addresses you’ll often see the subnet mask written in CIDR format, meaning there is a / followed by a
number.
That CIDR mask represents a whole block of addresses; the smaller the number, the larger the amount of addresses in
the block. The IP address [...]

DNS 101

DNS 101

Contributed by Dru Lavigne, DNSstuff Contributing Writer
Friday, 23 March 2007

While you probably use DNS every day, in fact you used DNS to find the webserver hosting this article, you may not be
clear on how DNS works.
This article will cover some of the terminology used in DNS. ICANN Think of DNS as a global telephone [...]

Considerations when Configuring DHCP

Considerations when Configuring DHCP

Contributed by Dru Lavigne, DNSstuff Contributing Writer
Tuesday, 15 May 2007

When configuring a network to use DHCP for IP address allocation, there are several points an administrator needs to
keep in mind.
Spending a few moments to map out your network’s addressing needs can simplify the process of configuring the
DHCP servers. 1. Determine the DHCP [...]

DNS Security Basics

Written by Dru Lavigne, DNSstuff Contributing Writer   

Wednesday, 25 April 2007

When configuring DNS for a network, there are several things an administrator can do to increase the security of the DNS servers. These include: Restricting Zone TransfersA DNS zone is the database containing the DNS records for a network. Every DNS zone needs [...]

LINUX BANDWIDTH CONTROL WITH CBQ

LINUX BANDWIDTH CONTROL WITH CBQ  Think your friend has a Linux box which is running Red Hat 8.0 or 9.0 and the CBQ packege is installed there. If CBQ is not present, ask him to install it from the Linux CD. I am also guessing that, His external NIC is eth0 and internal NIC is eth1. [...]