There are several methods you can adopt to improve network security, two of the best of which include a firewall and proxy server. Each of these protect a computer network, but work in slightly different ways.
A firewall and proxy server will both protect your computer from malware attacks or viruses, by blocking them from infection. A firewall typically works by blocking the most common ports used by viruses to gain access to your computer. A firewall will also prevent worms from attacking in much the same way. You can set up your firewall by identifying which ports you want to have open, and which you want closed.
Proxy servers operate by creating a protective layer between your network and the internet. A proxy service acts more like a middle person, allowing users outside of your personal network to see only the proxy server rather than your computer. Users inside of the network may then only access the Internet when passing first through the proxy server. This helps prevent unnecessary threats from viruses and other malicious software.
A firewall will also prevent programs including certain instant messenger applications or games from running on your computer if you set it up to do this, or you can set it up to create exceptions if you want some applications to run but not others.
Weighing the Pros and Cons of Each
While blocking websites through a firewall may sound appealing, there are sound disadvantages. Often consumers find their Internet access is cut off by doing so. If for example, port 80 is blocked, the protocol used to served pages for the web, then you will not be able to get on the Internet and access any web pages. If you want to filter websites only, you are better off using a proxy server. You can then choose to limit social networking sites, or filter them during certain hours. This is a good option for businesses that want to limit employee access to certain websites or block them entirely.
The primary difference between anonymous proxy servers and firewalls is that a proxy server functions mostly to redirect communications, while a firewalls main purpose is to block incoming and outgoing information. A proxy server also provides additional functions, which may include caching websites, and providing anonymity for individuals that want to surf the web but do not want their personal information revealed.
You can follow any responses to this entry through the RSS 2.0 feed.
Leave your comment