Unlike the open Internet, whose pages can be found via search engines such as Google, the Darknet or Deep Web is hidden from view. Here a network is created from and between all participants, classical servers do not exist. The internet has become a crucial part of our lives. It has revolutionized how we communicate, … Read more
According to Google’s own September 2019 transparency report, 94 percent of all HTTP connections are encrypted. DNS queries, however, still travel over the Ether in clear text, as if nothing has changed in the last 30 years. The implications for privacy and data security are undeniable. In today’s world, the internet has become an essential … Read more
A domain controller is a central instance of a network domain that manages and controls its objects as well as user rights and roles. It is a server that has been set up as a domain controller by the administrator. Users who want to log in and access objects in a domain contact the controller … Read more
Metasploit is an open-source project that provides, among other things, the Metasploit framework. It contains a collection of exploits that can be used to test the security of computer systems. Metasploit can also be misused as a tool for hackers. Metasploit is a powerful and versatile penetration testing framework that has become an essential tool … Read more
Network encryption operates on layer 2 or 3 of the OSI layer model. It ensures the confidentiality and integrity of transmitted data as well as the authenticity of communication partners and is transparent to higher-layer protocols or applications. In today’s digital age, communication over the internet is becoming increasingly prevalent. However, this ease of communication … Read more
The IEEE 802.1X standard operates at layer two of the OSI reference model and allows access control to cable-based or wireless local area networks (LANs and WLANs). It provides a secure authentication procedure and uses protocols and standards such as the Extensible Authentication Protocol (EAP) and RADIUS. In the WLAN environment, access control with this … Read more
As computer networks continue to expand in size and complexity, new technologies are being developed to help manage and optimize data communication. One such technology is a VLAN, or Virtual Local Area Network. VLANs allow devices to be grouped together into logical networks, even if they are physically located on different parts of a larger … Read more
Overlay networks have become increasingly popular in recent years, as they offer a unique way of connecting computers and devices across multiple networks. An overlay network is a virtual network that is built on top of an existing network, creating a layer of abstraction between the physical network and the applications that use it. This … Read more
What is a DMZ? The Demilitarized Zone (DMZ) is an independent network that acts as a buffer zone between an external network and the internal network. The buffer network contains, for example, web servers or mail servers whose communication is monitored by firewalls. As businesses and organizations become more dependent on technology and online presence, … Read more
What is LLDP (Link Layer Discovery Protocol)? The Link Layer Discovery Protocol works on layer two of the OSI reference model and is specified in the IEEE 802.1AB standard. Neighboring devices in a network can use the protocol to exchange information. The devices store the information they receive in their Management Information Base. Typical applications … Read more
A proxy is a software instance or a server that acts as an intermediary in a network. It receives requests and forwards them by proxy. Proxies can be used, for example, to obfuscate communication between local end devices and web servers, to speed it up, or to secure it. Have you ever been restricted from … Read more
A network domain is an administratively delimited network area that can be used to logically map the organizational structures of a company. Security policies, user rights, and user roles are managed centrally via a domain controller. A user logs on to a domain via the domain controller. Domains have unique names and are structured hierarchically. … Read more
How does RADIUS work? RADIUS stands for Remote Authentication Dial-In User Service and describes a service that authenticates and authorizes users in a dial-in network. RADIUS can also be used for the accounting of services. In companies, RADIUS is often used for user logon in WLAN networks. Have you ever wondered how you connect to … Read more
An Information Security Management System (ISMS) defines rules and methods to ensure information security in a company or organization. The ISMS is process-oriented and follows a top-down approach starting from the company management. Protecting sensitive information has become paramount for organizations and individuals alike, and the increasing sophistication of cyber threats and the growing volume … Read more
What is cross-site scripting? Cross-site scripting (XSS) is one of the most commonly used attack methods on the Internet. The goal of cross-site scripting is to obtain confidential data, hijack applications, or cause other damage. XSS embeds the attack code in a supposedly secure context. In today’s digital age, web applications are an integral part … Read more
The so-called Security Operations Center, abbreviated SOC, sees itself as the center for all security-relevant services in the IT environment of organizations or companies. It protects the IT infrastructure and data from internal and external threats. With the rapidly evolving landscape of cybersecurity, organizations face many threats and attacks on their digital assets. To combat … Read more
An intrusion prevention system, abbreviated IPS, is able to detect attacks on networks or computer systems and to take automatic defensive measures. It provides additional protection compared to conventional firewall systems. An Intrusion Prevention System (IPS) clearly differs from an Intrusion Detection System (IDS) in some functions. Cybersecurity is of utmost importance to protect our … Read more
An intrusion detection system, abbreviated IDS, is able to detect and inform about attacks directed at computers, servers, or networks. Often the Intrusion Detection System complements the usual functions of a firewall. Network security plays a critical role in safeguarding organizations from cyber threats. One essential component of network security is an Intrusion Detection System … Read more
A firewall is a system that is capable of analyzing data traffic. It protects IT systems from attacks or unauthorized access. The firewall can be a dedicated hardware or software component. Literally translated, firewall means “firewall”. The term refers to an IT system that can analyze, forward, or block data traffic. This enables the firewall … Read more
WPA2 (Wi-Fi Protected Access 2) has been the successor to WPA since 2004. Among the most important changes compared to WPA is the use of the AES encryption method. WPA2 eliminates the vulnerabilities of WPA that were discovered and is still considered very secure when a strong password is used, despite known attacks. In our … Read more