Before the era of UTM (Unified Threat Management or next-generation firewall), we most often dealt with stateful firewall devices. The principle of operation of the stateful firewall is primarily operating on the headers of the third network layer (L3) and the fourth transport layer (L4) of the OSI model. Thanks to the understanding of headers […]

Why is it important to take a comprehensive approach to secure the Internet interfaces, instead of focusing on one area, e.g. a firewall?   In this article, we will take a shot at answering this question, showing potential Internet interfaces that can be critical in case of attack. You will learn what firewall network security is […]

When dealing with networks, both wired and wireless, we can’t fail to mention the security issue. In the case of wireless networks, many users are unaware of the hazards lurking when switching between networks and using unprotected, unverified wireless networks. This article will answer your questions on securing the Wi-Fi network and making it resistant […]

To check whether a given IT infrastructure is resilient, and its LAN security strong, first, we need to run audits and penetration tests. While performing these, we use various protection breaching techniques to access the company’s resources. One of the basic tests is an attempt to obtain as much information as possible at a local […]

In today’s post, we’ll cover the planning, design, and building of professional, Enterprise-grade wireless networks, i.e. advanced wireless networks. We’ll touch on the selection of equipment and components used in these professional networks. We’ll also review Wi-Fi access network protections in tandem with a component called Cisco ISE, which plays a role of a hub for […]

Cisco ISE is a solution designed for controlling the secure network access policy and thus, the organization’s critical resources. It’s a single point providing information on events related to the connection of devices and users to the network.  ISE is much more than a concept of complementary security and an “intuitive” network, but we’ll get […]

A cyber security audit is often the first step to ensuring the security of your business, especially when most employees work remotely. An audit is the starting point for building a continuous safety improvement process in the company. The process starts with non-invasive testing of specific resources in the infrastructure and checking these against given […]

Zero Trust, the concept of securing services and devices based on an implicit lack of trust, which can be applied to Industry 4.0, is a subject that is used in all cases in IT. It may seem that there is no longer a company, that does not use Zero Trust’s complete approach to security. However, the reality is not so bright. What problems and challenges does Industry 4.0 pose in terms of security? We will provide answers to these questions below. They will be based on visible trends in the manufacturing industry, as well as lessons learned from Grandmetric’s safety audits.

Online data privacy and security is a particularly important topic when most of us work remotely. There are plenty of traces that we leave behind on the Internet, and we encounter cybercrime on a daily basis. We should, therefore, consider how we can protect ourselves against the loss of both personal data and key company information. The ICT audit is a certain component of the entire security policy. It is most often carried out in order to prevent threats that may occur in the future.  

DNS Protection, what is it?  DNS, or the Domain Name System, is a system translating URL addresses of websites into a language understandable for computers. Protecting DNS, we do not allow undesired domains to transfer information to our users. This is how we can protect them from phishing or ransomware attacks. When we add a […]