What is a Firewall?
A firewall is a network security device that monitors incoming and outgoing traffic; it allows or blocks data packets based on its own security rules. A data packet is a unit of data made into a single package that travels along a defined network path. Internet Protocol (IP) transmissions use data packets for data that navigates the Web, and in other types of networks. The purpose of a firewall is to maintain a barrier between your internal network and incoming traffic from external sources like the internet. The firewall can block unwanted traffic like viruses and hackers.
Network security is a wide term that covers many technologies, devices and processes. It is a set of rules and configurations that protect the integrity, confidentiality and accessibility of computer networks and data using software and hardware technologies. Every company needs some network security solutions in place to keep them safe from the growing landscape of cyber threats taking place worldwide.
Today’s network architecture is complicated and businesses face a threat environment that changes constantly. Cyber criminals are always trying to find and exploit your system’s vulnerabilities. These vulnerabilities can exist in a range of areas such as devices, data, applications, users and locations. There are various network security management tools and applications that we use to deal with individual threats and regulatory non-compliance. A few minutes of system downtime due to an attack can cause massive disruption to your company’s profits and reputation. Therefore, it is essential that you put these security measures in place.
A proxy firewall is an early type of firewall device that acts as the gateway from one network to another for a specific application. Proxy servers can provide extra functionality such as content caching and security by preventing direct connections from outside the network. However, the activity of the proxy firewall can affect throughput capabilities and the applications they can support.
A stateful inspection firewall is often called a traditional firewall. It allows or blocks traffic based on state, port, and protocol. This kind of firewall monitors all activity from the opening of a connection until it is closed. It makes filtering decisions on administrator-defined rules and context, which refers to using data from previous connections and packets belonging to the same connection.
Modern firewalls include next-generation (next-gen) capabilities. These capabilities overcome the problems of stateful inspection firewalls and provide you with visibility of network traffic and user activity. UTM (Unified Threat Management) firewalls have embedded security detection and prevention engines that give further examination with functions such as Intrusion Detection Systems and Intrusion Prevention Systems (IDS / IPS), Network AV (Anti-Virus), Application filtering, and Web filtering. We have the necessary skills to perform Man-in-the-Middle SSL traffic inspection (MitM).