A firewall is a network security mechanism or layer of protection that sits between the internet and computer networks. An internet firewall can be described as a piece of hardware or software that safeguards the computer from unwanted data and viruses.

What is a Hardware Firewall at any NOC (Network Operations Center)?

A hardware firewall is a physical device that filters traffic to a computer, similar to a server. A network cable is generally hooked straight into a computer or server, however, with a hardware firewall, the cable is first plugged into the firewall. The firewall acts as an antivirus solution and a hard barrier against intrusions by sitting between the external network and the server. When put between a modem and wireless router, it helps stop attacks from reaching the devices and appliances.

What is a Software Firewall at any SOC (Security Operations Center)?

A software firewall is a sort of computer program that operates on a computer or server. Its main goal, depending on the software firewall being used, is to safeguard the computer/server from outside efforts to control or acquire access to the system. Any questionable outbound requests can also be checked with a software firewall.

Differentiating Hardware firewalls and Software firewalls based on their advantages

Hardware firewalls let a user use a single physical device to secure the whole network from the outside world. This gadget is connected to the internet through a computer network. A hardware firewall tracks data packets as they go over the network. According to established criteria, the firewall subsequently either blocks or sends the data. Installing dedicated hardware firewalls necessitates significant IT skills, and businesses require dedicated IT staff or department to monitor and manage hardware firewalls. As a result, hardware firewalls are typically used by large businesses or businesses that place a premium on security. Most routers nowadays feature rudimentary firewall functionality, however, these solutions are aimed at home or small business users.

Software firewalls, on the other hand, provide network internal protection. A software firewall is a piece of software that is placed on a single computer and serves to safeguard it. If a business needs to secure many computers, it will need to install the program on each one. A software firewall regulates how certain programs should behave. The administrator can, for instance, restrict access to specific websites or a network printer.

Why do organizations need to deploy both hardware and software firewalls?

A physical firewall protects a network from the outside world, whereas a software firewall protects a specific device from other devices connected to the network systems. If someone tries to access the systems from the outside, the physical firewall will stop them. However, if a user mistakenly opens a virus-infected email that has already entered the system, the software firewall on the workplace network may prevent the virus from infecting other workstations.

In some cases, due to the sensitive data being generated (for example in the healthcare and financial services industries), both firewalls will be used. The PCI DSS also requires both hardware and software firewalls (Payment Card Industry Data Security Standards).

In terms of software, one way to think about it is on a spectrum from ease to security. Hardware firewalls prioritize security over convenience in terms of buying, setup, and application. When used correctly, the two can work together to counteract others’ flaws while promoting their positive qualities.

What about tiny businesses that aren't as concerned about security? It's tempting to go with the simplest firewall to set up but it is important to know that firewalls, both hardware, and software, defend against a variety of dangers. Software firewalls evaluate network traffic that gets past the hardware firewall, whereas hardware firewalls prevent malware from accessing your network. Most IT experts believe that all businesses should use a combination of hardware and software firewalls to improve network security.

Centex Technologies provides cybersecurity solutions to businesses. The team also assists businesses in planning a complete computer network and setting up adequate firewalls. To know more, contact Centex Technologies at Killeen (254) 213 - 4740, Dallas (972) 375 - 9654, Atlanta (404) 994 - 5074, and Austin (512) 956 – 5454.

Deep web comprises of uncatalogued sub-pages of domains, encrypted networks, password-protected data, private databases etc. The content in this invisible web cannot be indexed by the search engines and so it is generally hard to keep a track of it. Although there is no accurate estimate, but deep web is considered to be 400 to 500 times bigger than the surface web which is a part of World Wide Web that is available to general public and can be indexed by search engines.

Web, in general, can be compared to an iceberg where surface web resembles the visible tip and the huge part hidden below the surface forms the deep web.

What Can Be Found On The Deep Web?

A search engine, by crawling from one page to another, creates an index of pages that are linked to one another. However, the page that could not be linked to another page or could not be found by the spiders or crawlers of a search engine comes under the ambit of deep web. It could be an unpublished or unlisted blog post, file directory, picture and/or the content which the search engine cannot see.

You are most likely to find a record of following things on the deep web:

• Personal email accounts
• Social media accounts
• Online banking accounts
• Medical records
• Legal records
• Academic records
• Data stored on private databases

Who Uses The Deep Web?

• Journalists
• Police and military
• Whistleblowers
• Political protesters

Common Misconceptions About Deep Web?

• Deep web is illegal
• It can be accessed by experts only
• It cannot be searched at all
• It is the same as ‘dark web’
• It is smaller or equivalent to surface web in terms of size
• It is run by criminals

Difference Between Deep & Dark Web?

The terms often used interchangeably are however, quite different from each other. The former is the pool of information on the web that cannot be accessed by search engines, but can be retrieved if you have an address. Whereas, the information on dark web is kept secretive purposely. It is often linked to criminal & illegal activity.  

In the absence of deep web, it would have been difficult in maintaining privacy as in that scenario anybody could access your accounts by searching you on google. Since, this information is private so deep web helps in preventing it from being misused.

For more information on deep web, contact Centex Technologies at (972) 375 - 9654.