TechStarters Logo
Blog Home
10 Toxic Firewall Flaws You Might Not Realize

10 Toxic Firewall Flaws You Might Not Realize

Do you happen to know of all the vulnerabilities of your firewall at your business? Your vulnerability scans might come up clean, your penetration tests may not reveal everything of importance, therefore everything is good to go, right? Well, in some instances, not exactly. There actually happen to be numerous firewall vulnerabilities that can be right in front of you but will slip by observation.

Here are ten toxic firewall flaws your business should be looking for when ensuring your workplace has a safe and protected firewall:

1.) Your password(s) are set to a default password which can result in every imaginable security flaw you can think of. Password security is absolutely crucial.

2.) Anyone online is capable of accessing Microsoft SQL Server databases which are hosted internally. This can lead to unwanted internal database access, especially when your business’ SQL Server has default credentials set.

3.) Your firewall OS software is very outdated and no longer is supported, which can result in known issues such as remote code execution and denial of service attacks. Situations such as these might not look very good in the eyes of third-parties if a breach takes place.

4.) The fact that anyone with an Internet connection can access the firewall via unencrypted HTTP connections. These can be exploited by an outsider who is on the same network such as an open or unencrypted wireless network.

5.) Your anti-spoofing controls are not enabled on your external interface which could eventually facilitate a denial of service.

6.) Your rules exist without any logging, which could be a huge problem for critical systems and other assorted devices.

7.) Any specific protocol or service that can connect to an internal network segment, which results in internal breaches and compliance violations.

8.) Anyone on your internal network can reach your firewall via unencrypted telnet connections. These specific connections can be exploited by internal users or even worse, malware.

9.) Any type of TCP or UDP service that can exit the network and enable the overall spreading of malware and spam. This can result in other major policy violations.

10.) Certain rules existing without any documentation, therefore creating security management issues. This can be a problem especially when firewall admins happen to leave your company abruptly.

Every possible security issue, whether confirmed or potential, is subject to your own determination. Although, the odds are good that potential firewall flaws are generating massive business risks for your company. It’s best to address these issues and tweak the architecture of your firewall to your needs. Just be sure any fine-tuning of your firewall is according to the policies of your business.