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Troubleshoot a Slow Network – The entire Network is Slow

The Entire Network is Slow

If the entire network or a part of the network is slow, this could be a strong suggestion for a faulty switch or a miss-configuration.

Poor network equipment
Usage of hubs is not recommended, (hubs are prone to collisions by design)
Cheap switches that cannot handle the total needed bandwidth. The switch’s chip can handle 100Mb/s for 12 ports, but the switch has 24 ports and all are connected. For low network usage this is not a problem, but if your network usage spikes, your switch will not be able to handle the bandwidth. The quick fix in such situation is to power off the switch for a few minutes and then power it back on.

Loopback
A loopback is a network cable that has both ends connected to the same switch. If it’s a managed switch activating loop protection on all the ports could fix the problem. You can look on the switch’s log file for excessive broadcasts and isolate the two ports that are in loop. If you don’t have managed switches you can use a packet sniffer to determine if there’s a loop. A wrongly configured Spanning tree could cause a loopback.
FIX: Check all the patch-cord connections in the faulty switch. Check for patch-cords that have both ens into the same switch. Check for more than one patch-cord connecting the same two switches.
If you have cascaded switches it is normal to be slower for the devices in the cascaded switch but is not normal for the devices that are not cascaded. Check if any cascaded device is not connected on two ports on the wall, (usually the ports on the wall go to the network room). Your cascaded switch makes a loop into the upper level switch.

Bad Network Configuration
DNS issues
can cause a lot of slowdowns.
One common error is to use your ISP’s DNS server inside your Active Directory network. Your Active Directory computer members will try to resolve internal names by querying your ISP’s DNS. Those records don’t exist outside of your network.
Fix: For all of your Active Directory network clients remove any entries for your ISP’s and use only internal DNS servers. Configure your ISP’s DNS server as a forwarder on your AD DNS servers.

Network switching equipment wrongly connected is the reason of slow network for many small networks. Typically this happens when a small switch is connected to the router. When the switch becomes too small for a growing network, the first impulse is to connect the computers into the router directly.
Fix
: Install a switch that will accommodate all of the computers in the network. Disconnect any computers connected directly into the router.
Note: It is normal for the wireless connected computers to have slower transfer rate than the wired ones. Most of the wireless routers and adapters function at 54Mb per second. If your router is a modern router, (100 Mb or faster), and you still don’t get the expected transfer rates, you should revise your configuration as above.

Broadcast storm
You can efficiently detect a broadcast storm using a packet sniffer or a managed switch. With a packet sniffer you need to look for large numbers of broadcast/multicast (more than 20% of the total traffic it is an alarm signal). Locate the retransmission packets and search for the source MAC address. Disconnect the problem host.
If you suspect a broadcast storm in your network and you don’t have a managed switch or a packet sniffer, you can run download and upload tests by systematically disconnecting all of your computers in the network one by one. This is only practical in small network environment.

Virus Attack
A lot of connections originating from the same MAC address, to the same destination port, but for different destination address, and in short intervals.
Fix: Determine the source address of these connections and disconnect the suspect hosts. Run an antivirus scan on the computer before plugging it back. There are a few ways to determine the source of a virus. Use a packet sniffer, look on your managed switch for the ports with the most traffic and confirm it on the suspected computer by issuing the command “netstat -a -b”, (on a Windows machine). The command will show you which ports are active and which program, (executable), is using the ports.

This article is part of a five posts series regarding Network Troubleshooting.

The Domain Name Scam Explained

Domain Name

Protect your Domain Name?

If you are a Domain Name owner and make business on Internet you know that your Domain Name is one of your biggest assets.

You wouldn’t give away any traffic resulted in misspelling of your domain name or traffic generated by similar domain names.
There are actually people on Internet who specialize in stealing traffic from other companies. They do this by using domain names similar to successful companies. However this is less feasible these days because domain name doesn’t carry too much weight in SEO.
If someone would try to register your domain name, what would be your reaction? Your first reaction, of course, would be to protect your domain name. You want to buy that domain so nobody else could use it and steal your traffic. This is a natural reaction; you are trying to protect your asset.
This weakness is exploited by a large number of companies, (mostly Chinese), specialized in this type of scam.
There is nothing wrong to secure that domain name, if you think it makes sense for your business, many companies do this, just don’t buy the domain name from the spammers. Buy that domain from a reputable registrar instead.

How does the Domain Name Scam work?

The spammer collects information from the Domain Name registration which is, in most of the cases, public. This information contains the owner name, the email address, and of course the Domain Name. This information is enough to devise an email which will be sent to the CEO. The email informs the owner that another company is trying to register the domain name in cause but for another TLD or ccTLD.
As the owner of the domain you “get the benefit of being announced of this purchase” and are being offered to buy it yourself.

For instance you own domain.com and someone is trying to register domain.tw and domain.cn, etc… Other country-specific flavors (.asia, .biz, .cc, .cn, .com. cn., .hk, etc.) can be mentioned. You are informed about this and offered to buy the domain or the domains.

Scenarios when Contacted by a Domain Name Scammer

At this point there are a few possible scenarios:

First scenario: You don’t really need the domain names but you fall for the scam and say “yes, please register all of these domains for me”.
This is the worst case. These types of companies are ghost companies that charge you three to ten times the regular price of the domain. Sometimes, if you don’t pay attention to all the registration details the scammers will register themselves as registrant and administrative contacts and they will keep themselves in the loop trying to reap you off more down the road.
Second scenario: You look at the domain names list they sent you, you pick the ones you are interested to protect and register them at a serious registrar for a fair price. See this post about Protecting the Trademark by Registering Domain Names. You might have a Web Marketing strategy that involves buying those domain names. In this case the scammers made you a favor reminding you to buy some domains that you missed.
Third scenario: You simply ignore the email; you don’t care if someone registers the domain domain.cn, these days a domain name doesn’t count that much for the traffic as it used to. The content is king and traffic leaking is almost impossible only using a domain name. Protecting your Trademark is your lawyer’s job and there is no need to buy everything on the market to protect your Trademark. See this article about the defensive domain buying: Protecting your Trademark by buying as many as possible domain names.

The decision is not always simple and it depends on your business needs. You could go with either the second or the third scenario.
You can Buy International Domain Names at fair prices at: Go Daddy Bulk Domain Registration

Regardless of your business needs you will probably want to avoid buying these domains from the scammers.

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How to Start an Internet Business

Introduction – Seven General things needed to Start an Internet Business

The Internet has opened a whole New World of opportunity for even the smallest home-based business owner. There are countless numbers of new self-made millionaires who achieved their newfound success on the Internet. These new millionaires are regular people like you and me.

They started their Internet businesses from scratch; they found a niche and built their success one day at a time. Many of asked themselves: “Can I really make money on the Internet?” The answer is simple: “Yes You Can!”

No matter whether your objective is to secure a good income and work less, or work hard and make a lot of money, you can do it. There is a

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You just have to take the necessary steps to make it happen. Don’t take shortcuts; most of the times it will hold you back. You must have a genuine desire to succeed and the correct attitude for success.

Sometimes it takes many tests and trials to get the successful business combination. Don’t consider these as failures, consider them as training sessions. Look at the whole process as you were an athlete, in order to obtain performance you need to train.

Cooking up your successful Internet Business takes a few important ingredients. Here are the most important ones:

Genuine Enthusiasm and great ideas

If you want to be successful, you need to be passionate about your business and to be an expert in the subject matter. Your passion and knowledge about the business you start will drive you to success.

A great idea of business will insure your success. A good new Internet business idea is hard to produce, mostly because someone else has already done that. But you don’t have to start something new. You need to take what you are good at and translate that on Internet. You can do something that someone else did and improve it. Or you can simply copy a successful Internet Business because you know it works. That could be writing blog content, writing eBooks, selling your products on Internet, selling services on Internet, starting an Internet store, selling photos, etc…

Writing skills

Regardless of the domain of activity, the writing material is essential for your business. Your product, web site and marketing strategies all depend upon your words. If you don’t have writing abilities you must hire someone to do the job for you.

Business Plan and an Excellent Marketing Strategy

Making your Business Plan and Based upon this creating a marketing strategy is essential for your business. In order to succeed, you must develop and implement a strategic plan.

Credibility

As an Internet entrepreneur, it is your job to guarantee that your visitors feel very comfortable with you and your web site. In order to gain your visitor’s trust and confidence, you must build your credibility. If you as a content author, subject matter expert, or goods seller don’t inspire credibility your visitors will not buy from you.

Have a Positive Attitude

Your attitude is the most important
Do not discourage keep trying, you will succeed.

Do not let temporary failure discourage you.

The secret to creating any successful business is a combination of determination, perseverance, self-confidence, and hard work.

Many people will fail just at the moment they are about to succeed; because they don’t believe enough in their success and give up.

Invest in Your Business

No matter what type of business you’re developing, you MUST be willing to invest in your business, including your time, and money.

However, to reduce risks, at the beginning you need to minimize investments and expenses as much as possible. I will show you a lot of ways to do that over the course of this guide.

You must also be willing to work hard, including educating yourself, researching, and learning how to market on the Internet.

Your passion is the fuel of Your Internet Business Project

If you are sincerely passionate about your success, you will succeed.