Home Firewall The Holes in Your Firewall and How to Fix Them

The Holes in Your Firewall and How to Fix Them

by Linda D. Yelverton

All operating systems have a built in firewall. However, for those of you who haven’t upgraded your firewalls to a more modern and comprehensive type, you may not be aware of the various areas where it can affect your system performance. I’m going to share with you what’s wrong with your firewall.


Viruses – In the past, firewalls were generally created to only block traffic to specific websites that had been banned. This has changed over the years to include not only sites that are banned but also hosts on the internet that don’t really bother to put up firewalls in the first place.

Attackers are able to send data to local networks using software like Firebug or GFI, which opens up the entire network to remote attacks. In order to keep these attacks out of your network, install a firewall that has the ability to block these types of attacks.

Malicious executable files – These are programs designed to connect to the network and bring in malicious code and modify data. If these malicious files are allowed to connect, it can cause havoc. This attack can also cause your network to crash.

Attackers are also able to bypass your firewall and send data to remote users by exploiting a vulnerability on your system. They send data that looks legitimate, just to make it look like your computer is down. These malicious files will then try to add themselves to your accounts, making your network run much slower.

When attackers exploit a vulnerability on your system, they often send off command codes to a remote system. These commands will then try to gain access to the network by using various methods, causing a variety of problems.

Firewalls are also one of the most difficult things to fix on a new system. These systems are designed to block data and programs that are deemed to be harmful, whereas an open firewall can allow all kinds of data to get through, including data that may be harmful. You need to consider the kind of firewall you have and what the pros and cons are of have that firewall upgraded.

You need to determine which user groups are allowed to connect to the internet and what domains are allowed. By knowing this information, you can decide if you want to upgrade your firewall or not. The disadvantage is that if you don’t do this, attackers can use these settings to get onto your network and have their malicious data sent to remote users.

As far as anti-virus software goes, you may want to upgrade to a more advanced one that not only can detect worms and Trojans, but can also provide more protection for your network. When you don’t have a firewall, attackers can easily enter your network without being detected.

The most popular kinds of firewall settings that people find useful are IP-based and Virtual Private Networks (VPNs). IP-based firewalls are networks that have a point-to-point connection between your computers. This means that all data gets passed through the firewall, but the location of the network is not limited to a specific IP address.

A VPN acts like a tunnel between two different networks. The firewall only protects against traffic that passes through the VPN, and the system administrator can configure these settings for any number of networks.

Once you have upgraded your firewall to newer, more advanced versions, it will be even easier to work around the various security holes that you can find in these kinds of firewalls. With so many holes being found in these kinds of firewalls, you should have no problem dealing with them.

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