IP and Port Info Using Netstat
Ever wonder if there is any easy way to find out what your computer is listening for? Want to know where it is connecting to? NetStat can tell you.
Category Archives: Networking
Who doesn’t love NETDOM?
This command-line tool enables administrators to manage Windows domains and trust relationships from the command line. This tool is very handy for scripted installs, updates, adds/removes, and general info gathering. Command Description Netdom add Adds a workstation or server account to the domain. Netdom computername Manages the primary and alternate names for a computer. This command can safely… Read More »
Drive-By Downloads
You’re surfing the Web, enjoying a quiet afternoon, when a window pops up on the screen. “New Windows Antivirus Update Available,” it says. “Would you like to update your system?” You get “Yes” and “Cancel” buttons at the bottom. It looks like a real, honest-to-goodness Windows message, right down to the logo in the corner. Should you click… Read More »
What is an Intrusion Detection System (IDS) ?
Intrusion Detection System (IDS) are a necessary part of any strategy for enterprise security. What are Intrusion Detection systems? CERIAS, The Center for Education and Research in Information Assurance and Security, defines it this way:
Home Networking Lab: Cables types and their purpose
One of the most common questions I get from CCNA and CCNP candidates who are setting up their own home labs is “What cables will I need?” The answer is “It depends.” As you know from your exam studies, the physical layout of your lab is what determines the cables you’ll need. Let’s take a look at the… Read More »
Introduction to BGP
BGP is one of the most complex topics you’ll study when pursuing your CCNP, if not the most complex. One thing to keep in mind though, is that no Cisco technology is impossible to understand if you just break it down and understand the basics before you start trying to understand the more complex configurations.
DNS and the IP Name-Server command
DNS behaviors of a Cisco router are important topics for both the CCNA exam and real-world production networks, and you probably didn’t know there were so many DNS details before you began studying for the exam! In this tutorial, we’ll look at the ip name-server command and its proper usage.
Using Trivial File Transfer Protocol (TFTP)
One of the first things you do when you start studying for the CCNA exam is memorizing a list of port numbers and the protocols that run on those ports. If you’re an experienced networker, you know most of the protocols that are mentioned – DNS, DHCP, FTP, SMTP, and so on. But there’s one protocol that you… Read More »
Route Summarization
Preparing to pass the CCNA exam and earn this important Cisco certification? Route summarization is just one of the many skills you’ll have to master in order to earn your CCNA. Whether it’s RIP version 2, OSPF, or EIGRP, the CCNA exam will demand that you can flawlessly configure route summarization.
Prefix Notation
When you’re preparing to pass the CCNA exam and earn this coveted Cisco certification, you’ve got to be totally prepared for the many kinds of binary and subnetting questions Cisco may throw at you.