Network security measures are crucial to prevent unauthorized access and cyber attacks. A firewall is essential, as well as strong passwords that are regularly changed. Wireless networks should use WPA2 encryption and be turned off when not in use. Encryption of sensitive data on laptops or USB drives is also important. Lost or stolen equipment accounts for half of all data losses.
Network security measures are essential to prevent unauthorized users from accessing files on your computer. Such measures are especially important now that many people have ‘always on’ broadband connections. In addition to preventing data loss and security breaches, these measures can prevent your computer from being used as part of a cyber attack.
An effective firewall is probably the most important network security measure. It acts as a complete block between your computer or network and the outside world, so that only data from specifically authorized websites or programs can enter or leave. Windows comes with a built-in firewall that is worth using. You may have firewall capabilities built right into your router or modem. And it might be worth looking at separate firewall programs produced by commercial companies.
The two main methods hackers use to crack passwords mean there are a couple of important steps to choosing a password that will improve the security of your network. The first step hackers take is to run an automated program that examines all the words in the dictionary to see if they are right. This means that you should avoid a password that is simply one word; it’s best to use a mix of letters and numbers. The second, more elaborate hacking technique involves simply trying every possible combination of numbers and letters. This means that you should use the longest password possible – each extra digit makes your password at least 36 times more secure.
Another step you can take to improve the security of your network through passwords is to change your passwords regularly. While there’s only a small chance that someone has figured out your password at any time, changing it reduces that chance to zero. It’s also important to avoid using the same password in different situations as this increases potential problems if your password is discovered.
Wireless network security is especially important as it is much easier to physically intercept data from such connections. Where you have the choice, use WPA2 encryption as this is the most secure method. If this is not available, prefer standard WPA over WEP unless WPA is not available. Make sure you turn off your wireless connection whenever you’re not using it, especially if you connect your laptop to a wired network. And when using a WiFi hotspot, check with staff to make sure you’re connected to the real network rather than a bogus connection launched by nearby hackers.
Despite all the technical tricks used by hackers to break network security, half of all data losses are due to lost or stolen equipment. In addition to protecting yourself from this, you should consider encrypting any sensitive data stored on a laptop or USB drive. There are several programs available that can protect your data from being accessed by unauthorized users. Some of these programs are open source and therefore free, although you should be sure to research and read credible reviews before deciding which one to use.
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