12 Days of Cyber –What Are Firewalls and Why Are They Important


15 Dec 2015

12 Days of Cyber –What Are Firewalls and Why Are...

Firewalls are an important component for effective cyber security, combined with effective anti-virus software and secure password protection they are often a deciding factor as to whether a hacker will attempt an attack.

As with any common criminal, a cybercriminal will go for easy targets. A burglar for example would rather break into a property that has lax security in place than a heavily defended one. Hackers are no different. A poorly defended network is more likely to be attacked than one with effective cyber security measures in place.

What is a Firewall?

The name Firewall was borrowed from fire fighters and fire prevention. In the conventional sense a firewall is a barrier used to prevent a fire from spreading.

A Firewall is designed to stop unauthorised access to and/or from a private network. All messages entering or leaving pass through the firewall, which examines each message and blocks those that do not meet the specified security criteria.

They can be implemented in both software and hardware or both. Software firewalls are installed on a computer and will protect the machine from outside attempts to access it. Hardware firewalls on the other hand are installed on routers and performs the same function for the router as the software firewall does for a computer.

In addition to limiting access to your computer and network, a firewall is also useful for allowing remote access to a private network through secure authentication certificates and logins.

As the cyber threat grows, more sophisticated firewalls are being developed to keep up. Cyber security experts think that while firewalls still have a role to play, modern networks have so many entry points and so many different types of users that stronger access control and security at the host would prove more effective.

For the latest PGI updates like our pages on LinkedIn – PGIPGI Cyber and Facebook – PGIPGI Cyber

Share this article

RISK PORTAL

Your free global geopolitical
risk dashboard

PGI’s Risk Portal tool provides daily intelligence feeds, country threat assessments and analytical insights, enabling clients to track, understand and navigate geopolitical threats.

The Risk Portal gives users up-to-date information and analysis on global affairs.

The Risk Portal allows users to visualise information in a unique and instantly understandable way. Mapping filters enable the visualisation of incidents by threat category, time period, perpetrator and target type.

Risk Portal users can upgrade their accounts to include the Report Builder and Country Profile Generator features. The Report Builder allows users to select information, data and images from the Risk Portal and create bespoke reports and emails.

Subscribers to PGI’s Bespoke services receive tailored analysis on specific sectors and geographies of interest, delivered at a frequency they determine.

Visit the Risk Portal

Subscribe to our Cyber Bytes Newsletter

Keep yourself in the loop with PGI by signing up to our Monthly Cyber Bytes email. You will receive updates, tips and narrative around what has been happening in the world of information security.

Get in touch today

For more information on how we can help you or your business, please contact us via:

Related News

CISMP, CISSP and CISM - what's in an acronym?

20 Mar 2017

There is a wide range of different security courses available, and a mind-boggling array of certific...

Read news article

International Womens Day - Pioneering Women in Tec...

08 Mar 2017

Pioneering Women in Technology – Katherine JohnsonThe Oscar season has been and gone. The...

Read news article

Law Firms and why they need cyber security

06 Mar 2017

Suffering a data breach can be devastating for any company but for law firms the impacts can be part...

Read news article
Back to the News Hub

Follow us

+44 (0)207 887 2699
©2017 PGI - Protection Group International Ltd. All rights reserved.
PGI - Protection Group International Ltd is registered in England & Wales, reg. no. 07967865
Registered address: Cascades 1, 1190 Park Avenue, Aztec W, Almondsbury, Bristol BS32 4FP