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Next-generation firewalls (NGFW) offer capabilities beyond a stateful network firewall. First introduced in 1994 by Check Point Software Technologies, stateful firewall is a network security device (امنیت شبکه).
The main advantage of next-generation firewalls (NGFW) is the ability to securely use Internet applications that help users be more productive while blocking unwanted applications. Next-generation firewalls (NGFWs) achieve this by using deep packet inspection to identify and control applications regardless of the IP port used by the application.

Here are five important advantages of next-generation firewalls (NGFW) over traditional firewalls:

1. multitaskingNext-generation firewalls (NGFW) traditional firewalls enable forward packet filtering, port and network address translation, and stateful inspections, and can even support virtual private networks. However, they are only limited to the data link layer and the transport layer in the OSI model.

Next-generation firewalls (فایروال بومی), in addition to all the functions of traditional firewalls, include integrated intrusion detection systems (IDS) and intrusion prevention systems (IPS) that detect attacks based on analysis of traffic behavior, threat signatures, or anomalous activity. This functionality helps perform deeper inspection and improve packet content filtering of network traffic down to the application layer.

2. nowledge of applicationsTraditional firewalls usually block the ports of common applications or services on the network to control application access and monitor for specific threats. However, as the network connection becomes more complex, multiple applications use the same or different ports, which makes it very difficult for traditional firewalls to detect the desired port. In addition, these ports are encapsulated in various ways such as tunneling and decapsulated at the destination.

To combat these methods, next-generation firewall appliances (NGFW) monitor traffic from Layer 2 to Layer 7 and are smart enough to determine exactly what is being sent or received. If the content conforms to the policy, it will be sent and otherwise it will be blocked.

Application awareness also enables companies to set policies depending on the user and application. For example, they allow users to access Facebook, but block Facebook chats.

3. Simple and effective infrastructure Traditional firewalls require separate security appliances for each new threat, which leads to additional costs and efforts to maintain and update each one.

Configuring the thousands of rules required to detect and manage traffic with dynamic IP addresses is very complex. Furthermore, traditional firewalls do not provide the control and security needed for content, applications, or even users.

Next-generation firewalls (NGFW) provide capabilities such as integrated antivirus, spam filtering, deep packet inspection, and application control using only one device or console, and no additional devices are required, so using NGFW will reduce infrastructure complexity. became.

4. Threat protectionUnlike traditional firewalls, next-generation firewalls (NGFW) include antivirus and malware protection that continuously and automatically upgrades as new (شکار تهدیدات) threats are discovered and caught. An NGFW appliance also minimizes attack avenues by limiting the applications that run throughout the organization.

It then scans all approved applications for any hidden vulnerabilities or confidential data leaks, mitigating the risks posed by any unknown applications. This also helps to reduce bandwidth usage by any unnecessary traffic, which is not possible with traditional firewalls.

5. Network speedAlthough many vendors of traditional firewalls claim to provide a certain throughput (typically one gigabyte) from each port, the reality is quite different.

An increase in the number of devices and protection services leads to a decrease in network speed, and until the traffic reaches the end user, the speed is reduced to almost a third of the said speed. Whereas, the throughput of next-generation firewalls (NGFW) will remain the same regardless of the number of protection services.

Features of Next Generation Firewalls (NGFW)
• Next-Generation Firewall has the following features:

• Application and user control
• Integrated intrusion prevention
• Advanced malware detection such as sandboxing
• Using security threat intelligence
These features are in addition to those commonly found in network firewalls, such as network address translation (NAT), dynamic routing protocol support, and advanced access capabilities. The distinction between next-generation firewalls (NGFW) and native integrated threat management (UTM) is somewhat blurred. UTM appliances (دستگاه UTM) are designed for the small and medium business (SMB) market segment where a comprehensive security solution is needed. Currently, SIEM technology (تکنولوژی SIEM) is also very popular.

Today's NGFW can be implemented in the following ways:

• On-Premise (within the organization) at the edge of companies and branch offices
• On-Premise (within the organization) within the borders of the internal department of the organization
• In public clouds such as Amazon (AWS), Microsoft Azure, Google cloud platform
• In private clouds like VMware and Cisco ACI

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