Tag Archives: Local area network

Firewalls 101: Hardware, Software & Web Application Firewalls – Part 2

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Let’s continue our discussion of firewalls. In the first part of this series, we talked about firewalls as a general concept. Today we will discuss hardware firewall and software firewall technology. Then in the next post, we will look at web application firewalls (WAFs).

For this three-part series, we are reviewing the following articles: “Hardware Firewall vs. Software Firewall” (Michigan Cyber Initiative); “Best Practices: Use of Web Application Firewalls” (Open Web Application Security Project); “What You Should

Know About Firewalls,” (PCWorld); and “Better Protection – Hardware or Software Firewall?” (PChuck’s Network).

In the last post, we also reviewed furwalls – walls of genuine animal fur or a synthetic alternative that are quickly becoming more popular than wallpaper or fake wood paneling in home and office environments. Today, in addition to discussing hardware and software firewalls, we will look at how to make sure live walls of fur are adjusted frequently and best used to properly motivate your employees.
Continue reading Firewalls 101: Hardware, Software & Web Application Firewalls – Part 2

An Introduction to Different IP Classes

With the explosive launch of the world’s mobile networks we were facing the prospect of imminent IP address exhaustion. Yes there were only so many IP addresses created and allocated to hosts, and Internet service providers. The long term solution to  address IP address depletion became a serious concern. What was needed was an IP address architecture that could span not just billions of connected devices but hundreds of billions of devices or more. Out of this effort came version 6 of the Internet Protocol, or IPv6.

A Primer on IPv4, IPv6 and Transition

A Primer on IPv4, IPv6 and Transition | How to Grow Your Business Online | Scoop.it

From www.circleid.com – 3 weeks ago

There is something badly broken in today’s Internet. At first blush that may sound like a contradiction in terms. After all, the Internet is a modern day technical marvel.

Juliana Payson‘s insight:

I need a few days to absorb the information in this article. It’s extensive, not so much a primer, but a very in-depth article about the way the internet stands to date in terms of size and transition to the new IPv6.

How and Why All Devices in Your Home Share One IP Address


Tech Go Simple: How and Why All Devices in Your Home Share One IP Address | How to Grow Your Business Online | Scoop.it

From Tech go simple – Today
If you’re like most people, your Internet service provider hands you a single Internet Protocol address and your router shares it amongst all the connected devices in your home. This actually violates the end-to-end principle, which the Internet was designed around. However, there are only so many IP addresses to go around – we’re running out.

Juliana Payson‘s insight:

There are less than 4.2 billion available IPv4 IP addresses. In other words, there are more people owning connected devices on the planet than there are unique, public IP addresses for the devices, let alone the fact that many people will own more than one device. The Internet is running out of IPv4 addresses, even though we’re rationing them. The only way we can have so many devices connected to the internet is to do with something called NAT.

In the following article, using a bit of technical ingenuity a sysadmin demonstrates how he can use his android phone as a connection to the internet for several devices routed through his Linux laptop.

Setting up NAT and MASQUERADE for sharing USB Tether connection over LAN


Setting up NAT and MASQUERADE for sharing USB Tether connection over LAN | How to Grow Your Business Online | Scoop.it

From tuxdna.wordpress.com – Yesterday

I the only source of Internet connection I have currently is my phone. I wanted to share this network with other systems, via a LAN/wireless router. So here is a basic setup: Android Phone with USB…

Juliana Payson‘s insight:

The Laptop, becomes a default gateway for rest of the machines connected to the router – his phone. Given the recent Syrian internet cut off ingenius skills like these may come in handy for those with difficult internet connections. Let me know if you’ve also tried using your phone as a hotspot for the internet. – Juliana

 

How an IP Address Works

Often hear the Acronym IP address thrown around? SEO people seem to use it (Search Engine Optimization) as though it’s a numeric stealth ID number to track you down. Well, it’s kinda like that. Here’s a few very recent, and very good takeaways on what an IP address is, and more importantly, how it affects you, or how you can use it to your advantage.

How Public WAN IP works

 
How Public WAN IP works | How to Grow Your Business Online | Scoop.it

From wirelessvictory.wordpress.com – 1 week ago

When you are connected to the Internet, you actually have two different IP addresses, a private LAN IP and a public WAN IP. In most home network applications the router connects your local group of devices…

Juliana Payson‘s insight:

The router usually assigns unique local IP addresses to all of the devices connected to it via a service known as DHCP. The addresses assigned by your router are private addresses and are not routable across the Internet. Whilst you may be confused or sick of reading yet more acronyms, this article by Wireless Victory is an important foundation of definitions in today’s consumption of all things wireless. Most people probably don’t even realize they have a LAN (Local area network) at home connected by their Wireless Router.  It’s likely that all your family phones are connected as devices, including your iPad, your Digital television, your Wireless Printer, and your Blu-Ray, or Set-top-box digital receiver…

Here’s how to take control of your privacy:

How to Change Your Router’s IP Address | Wireless Home Networking

 
How to Change Your Router’s IP Address | Wireless Home Networking | How to Grow Your Business Online | Scoop.it

From blog.laptopmag.com – 1 week ago

By changing your router’s IP address you can give your home network an added layer of Wi-Fi security.

Juliana Payson‘s insight:

You’ll want to change one or both of the last two numbers of the IP address in the LAN IP Address field. You can use any integer between 1 and 254, giving you 64,516 possible IP combinations and making it much more difficult for someone to guess your router’s IP address. Why is this important? Well you’ve often heard people hijacking your bandwidth from your ISP, or grabbing cookies that store your login information. By changing your router’s IP address from something that was allocated or generated, you’ve increased the hassle for someone to break through.

 

SafeIP Hides Your IP Address for Private Browsing, Blocked Media

 
SafeIP Hides Your IP Address for Private Browsing, Blocked Media | How to Grow Your Business Online | Scoop.it

From lifehacker.com – 7 hours ago

Windows: If you want access to streaming media restricted by your location, web sites that display differently depending on where you are, or just a little privacy, SafeIP can help.

Juliana Payson‘s insight:

SafeIP has IP addresses in ten locations, including multiple servers in the US and the UK, and a handful of locations in places like Hong Kong, the Netherlands, Canada, Austria, Poland, Italy, Germany, and France. Conversely where your IP address identifies your location, you may want to piggyback on a proxy server to cloak your location. Now this is not as nefarious as it sounds. Quite often if you are travelling and this will alert your banking logins to multiple locations, you might want to reduce chances of lockout by setting up expected default proxy locations for you to check in from.

Now, every device has an IP address, it so that we can have end points for sending data when we trigger requests. Your website has an IP address, because it’s located on one server. Your phones, and laptops will have a different class of IP address also.

I hope this collection of recent articles helped you tackle your understanding of IP addresses, let me know if you have more questions you want followed up on in the comments below. – Juliana