Articles in Category: Networking

Network connectivity and configurations, protocols and problems, articles relating to how computers connect.

How can I tell what is being downloaded to my computer?

Are you finding mysterious downloads coming into your computer? It may be nothing sinister. But on the other hand… we’d better check the source.

Does visiting a search-engine cached page prevent the original site from noting my visit?

Even a cached version of a website could send information about you back to the original server. The thing is that we just don’t (and can’t) know.

What’s an Open Port?

With one exception, having an open port is not dangerous. But the way that ports work is interesting!

Why am I getting limited connectivity at my local open wifi hotspot?

When you are connected to a wireless network, but cannot get to the internet, it’s because an IP address has not been assigned to you. So how do you fix that?

Is My Router Acting as a DNS Server?

Some smart routers can act as a local DNS servers in an attempt to speed things up.

Why Can’t I Connect to My Hotel’s Wireless Network?

Hotels and other hotspot providers often insist that you agree to some terms of service before you can use their internet. The problem is that insistence can often interfere with the connection.

I’ve been blocked because my IP address is on a blacklist. What do I do?

Finding out that you are on a blacklist can be a nightmare. So how do you get off of it?

Can I Assign an IP Address to a Hub and Router?

In this scenario, you’ll end up with two IP addresses, but the hub and router won’t each get one. I’ll explain.

Will buying a new modem/router increase my internet speed?

Many things can interfere with a network speed test on your end. Make sure your speed test gives you the most accurate results by following these guidelines.

How can I share a single WiFi connection across multiple devices?

I have a rant about hotels that nickel and dime you on an internet connection. Fortunately, there might be something that you can do about it.

What Determines the Transfer Speed on My Home Network?

The communication path between two end points will be the slowest piece of  the connection path. That will be the maximum speed that you can achieve on any network.

How Do Those Ads Know Where I Live?

There are several ways websites can reasonably approximate your location and serve up ads specific to locale. We’ll look at each.

Does Opening Multiple Tabs Affect My Network Speed?

Without a doubt, having lots of tabs open can impact a computer’s speed. Whether or not it slows down the entire network will depend on exactly what all those tabs are doing.

Does a wireless range extender compromise my security?

The fact that your extender isn’t giving you access to set up security concerns me. I don’t believe it’s common and I’m really surprised it’s not there.

How do I slow down my router at night?

Trying to control children’s access to the internet has been a problem since computers first came into the home. A simple low-tech answer might be the best.

Why Doesn’t My Machine’s IP Address Match What I’m Told on the Internet?

Comparing your machine’s IP address to that reported by a website may result in a surprising difference. I’ll explain why that is and why it’s a good thing.

What is DHCP?

DHCP stands for Dynamic Host Configuration Protocol, and is how computers request and receive “dynamic” IP addresses as well as additional configuration information.

Network Discovery

Does Turning Off Network Discovery Improve Wireless Security?

Unfortunately, network sniffing is a very simple thing to do and it has actually nothing to do with the network discovery option.

What’s Up with this IP Address?

This IP address looks like both the IPv4 address and the IPv6 address that’s been assigned to that particular network node.

How Does NAT Work?

NAT is a fundamental technology used by routers allowing you to share internet connections and stay safe. I’ll give a conceptual overview.

Can I combine two internet connections to get a faster connection?

Everyone wants a faster internet connection. I’m frequently asked if it’s possible to combine two or more connections for speed. The answer is yes … but.

How Do I Get Wireless Internet?

You hear a lot about the wireless internet, but it’s not something you can just connect to anywhere. It’s more often something you purchase and set up.

What’s My IP Address?

We’ll look at some of the specific information you’re making available to every website you visit, and briefly explain each.

What is “Limited Connectivity” and How Do I Fix it?

“Limited Connectivity” displays when your computer is having problems completing its network configuration. It might as well mean “no connectivity”.

All Worked Up Over IP Tracing

I frequently hear from people who are quite insistent that they be able to trace an IP address to the person behind it. It’s just not that simple.

What Happens If Two Computers Have the Same IP Address?

Two computers should never have the same IP address if they’re on the same network. If they do, results are unpredictable.

Why Does My Home Network Only Work with One Computer at a Time?

If there is a conflict with your IP address, it could result in only one of the machines on your network working at a time.

Why Does My Network Connection Drop Every so Often?

Network adapters often try to detect the network speed for you. This can cause problems if both sides are trying to auto-detect at the same time.