Networks Analyzed @ Netralized

The Mozilla Corp. has announced the development of a completely functional Firefox web browser for mobile phones.

According to a statement made by Mike Schroepfer, vice-president of the department of Mozilla’s engineers, the official publication of Firefox for mobile phones will be released at the end of 2008. He has also announced the development of Firefox 3 for PCs.

The mobile Firefox will probably have the capability of accepting themes and support XUL.

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As you can guess correctly this is not an article purely for networks, but it concerns me for quite some time so i would be more than happy to get some feedback on it.

I am into computers for more than 10 years and i think many of you reading this blog, would be using computers for more than 5 because after all, you can’t say: Hmm computers might seem something good. Let me start using them! And the next day you’ve come upon a specialized networks blog and start reading it:)

So, i was thinking… What’s the problem with today’s computer users?

I’ve come up to this question because it seems that the average person that uses a computer doesn’t have:

• Patience
• Passion to make things happen
• Appetite for knowledge

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In this article I will show you how to configure an Ip address and a default gateway in your manageable switch.

But first things first,

Why is an Ip address and default gateway needed in the switch?

After all switches are OSI Layer 2 devices that care only about MAC addresses.

The modern switches are manageable and support extra features than normal old fashion switches. This features include the support of TCP/IP applications like ping, telnet, trace route etc. For example, if you want to telnet or ping a switch, the switch must have an Ip configured. Also, if you want to execute ping or telnet to a device in another subnet the switch must have a default gateway configured.

Now let’s see the configuration for a 2950 series cisco switch.

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Many times a lot of us who use laptops or desktop computers which are equipped with wireless network cards, have tried to scan an area for available wireless access points. We usually use the default wireless network scanner of the Windows operating system.

But is this the most efficient tool for this job?

Surely not.

There is a tool, not quite widespread, called Network Stumbler which is much more effective than the default windows scanner. The network stumbler is a wireless network scanner that supports many different chipsets of wireless network cards as Lucent, Dell True Mobile, Compaq WL 110, Elsa Airlancer and several others.

I guess that many of you are already familiar with it. For those who haven’t heard of it before let’s see why network stumbler is better than the default windows wireless scanner.

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Hello once again, and nope, we’re not gonna talk about networks this time. We’re gonna talk about you!

To explain my self a bit more, Netralized became one month old. Well you can ask yourself, so what?

We have 2 reasons to celebrate.

1. We made it sure we like to blog about networks, and on a frequent basis. Monday, Wednesday, Friday seems that is our current posting days frequency and we think that it is a good one and most of all, a frequency we can keep up to, at least with our current busy schedules. It’s not a promise that posting will occur on those days but at least for now, it has worked perfectly.
2. We found out that this type of communication has meaning, to you and us. We’ve received many emails and comments even when the blog was at its primal stages of development. And it’s going better and better every week.

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In my previous article: Using SSH Instead of Telnet I gave you an overview why you must use SSH instead of telnet. In this article I will show you how to configure a router as an SSH server. Keep in mind that you will need an SSH client to connect to the server. Popular SSH clients are Teraterm, Putty and OpenSSH.

Before configuring SSH, verify that you have configure your router as AAA server with local authentication and you have set all the appropriate usernames and passwords

Here is the configuration:

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Accessing remote network devices for monitoring purposes or for configuring it, is an everyday activity of any network administrator.

But which remote access method you use?

Maybe telnet is a good idea if you don’t care about security.

Always keep in mind that using telnet to communicate with your remote network devices is not secure because all the traffic that passes through the telnet session is sent unencrypted. Saying all the traffic includes also your passwords. This means that anyone who can eavesdrop your data can easily find your password.

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After Lebyathans comment in the article “understanding ip addressing“, I have decided to give you an example of subnetting using the ip and subnet mask he mentioned. In this article you can see how we can find the network address, first valid host, last valid host, broadcast address, number of subnets and number of hosts in our network.

The Ip address is 192.168.5.33 and the mask is /27

First translate the mask from /27 to decimal form. /27 means 27 continuous 1’s in binary. It looks like this 11111111.11111111.11111111.11100000 and if we do the conversion to decimal the result is 255.255.255.224

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Welcome again. This unfortunately is not an article about networks but it is an article about our network. Well let me explain. As you may have noticed, the previous week was a hectic one. We had several problems with our host, latency, slow loading of the pages and sometimes timeouts. After thinking a bit with Jim, we decided to move Netralized to a better host, a more professional one.

Changes had to be made and we now think we’re back on track so we can continue our blogging journey to the cybercpase The new host has more ram and cpu dedicated to us so we won’t have any problems. Thanks to their support, the transferring was really fast and Netralized is now faster and more stable.

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Configuring the passwords of your network device is the first step to achieve security.

How do we do this?

In Cisco devices we have four different basic types of passwords;

1. enable password
2. secret password
3. telnet password
4. console password

Now let’s analyze them.

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