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Disclaimer

© 2009 Zero Intellect. All rights reserved. The opinions expressed herein are my own personal opinions and do not represent my employer's view in anyway. This material is not sponsored or endorsed by any of the vendors mentioned in this website and their Logos are trademarks of their own and their affiliates.

Google Public DNS

 

While I was looking for free public DNS servers the other day, I happened to come across the Google Public DNS. Reading the FAQ I gathered that it was not based upon BIND or NSD but was a proprietary DNS server written by Google.

When you connect to your ISP, most of the time you get an IP

Continue reading Google Public DNS

Bootstrap Protocol (BOOTP)

 

When a device on a TCP/IP network starts up and is not configured for a static IP address, it needs to receive an IP address before it can communicate with other devices on the network. A standard computer with a hard disk can be enabled for static configuration but a diskless device that does not have

Continue reading Bootstrap Protocol (BOOTP)

Preboot Execution Environment (PXE)

 

Booting your host from the network without the need to rely on the local operating system or hard disks is a technology that is not used very often in the corporate environment today with some people never having heard that such a thing is possible. With the way things are moving today with virtual machines, virtual

Continue reading Preboot Execution Environment (PXE)

Reverse ARP is not the reverse of ARP

 

For those of you who have heard of Address Resolution Protocol (ARP) and think that Reverse Address Resolution Protocol (RARP) is its complement, they are totally off track. RARP is a computer networking protocol used by a host computer to request for an IPV4 address from another host computer if it does not have one used (not statically assigned), the

Continue reading Reverse ARP is not the reverse of ARP

Special types of IP addresses

 

The are many special types of IP address that we seldom come across as they are only used in special cases. We will go through each of them in the overview below:

 

1. Limited Broadcast IP address

In this type of an IP address all the 32 bits of the IP address are set to 1′s. The address

Continue reading Special types of IP addresses