Category Archives: Networking

All things Computer Networking, DNS, Wiring Diagrams, Cabling.

How to use wire shark to find a spamming computer?

Posted on December 21, 2011 by zo

Wireshark tracking down Spamming Email Computers on the Network. Continue reading →

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DSL Speed Tests – Comcast

Posted on December 21, 2011 by zo

Having Problems with my Comcast Internet; here are some sample tests run with over a Motorola Surfboard Modem, and 10/100 Router. Have the Cable people out before these tests were run – will post results after their visit was over.  … Continue reading →

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RAID 5, explained

Posted on July 15, 2011 by zo

RAID 5, explained RAID 5 (block-level striping with distributed parity) distributes parity along with the data and requires all drives but one to be present to operate; drive failure requires replacement, but the array is not destroyed by a single drive … Continue reading →

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How to be an ISP:

Posted on January 17, 2010 by zo

Build your own hot spot By Dong Ngo If you go to the CBS Interactive building at 235 Second Street in San Francisco and turn on your laptop, you will find an access point called “CBS_Interactive_Public” that offers free wireless … Continue reading →

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Configuring a Windows/SMB Shared Printer – SUSE Linux

Posted on November 17, 2008 by zo

Sharing a printer from a Windows computer is a cost-effective way of making the printer available to everyone on a network. As such, it’s often done in a home environment, where a printer can be shared among computers used by … Continue reading →

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Linux / UNIX Find Out What Your Dns Server Addresses is

Posted on November 17, 2008 by zo

The resolver is a set of routines in the C library that provide access to the Internet Domain Name System (DNS). The resolver configuration file contains information that is read by the resolver routines the first time they are invoked … Continue reading →

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Public DNS Servers

Posted on November 17, 2008 by zo

The purpose of a DNS server is to enable people and applications to lookup records in DNS tables. A few domain name servers on the Internet provide DNS resolutions for anyone who requests it of them. These are known as … Continue reading →

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What Makes up a Subnet Mask (SNM)?

Posted on April 12, 2007 by zo

In Binary: 1’s represent what portion of the IP address is the Network ID 0’s represent what portion of the IP address is the Host ID For Example: 207.23.106.99      (Class C Address) Net . Net … Continue reading →

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Address Classes: Network IDs and Host IDs

Posted on April 12, 2007 by zo

Class A (1st Octet 1-127)   -     Network.Host.Host.Host Class B (1st Octet 128-191) -  Network.Network.Host.Host Class C (1st Octet 192-223) - Network.Network.Network.Host  If the 1st Octet is: 1 – 127  Class A … Continue reading →

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IP Addressing and Subnetting

Posted on April 12, 2007 by zo

Learn to Subnet™.com A Free Lecture-based Educational Course on IP Addressing and Subnetting Part of the www.LearnTCPIP™.com Education Series Covering TCP/IP, TCP, DNS, Ethernet, OSI Model, Subnetting, IP Addressing and the Internet Learn to Subbet

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