Packet Firewall

On the afternoon of February 4, 2015, under the guidance of the Ministry of Public Security and the Ministry of Information Technology Informatization, the Third Research Institute of the Ministry of Public Security and other relevant departments, the deep convincing science and technology, NSFocus and the net God Information technology were jointly held by the second generation Firewall standard conference in Beijing National Conference Center. The chief engineer of the Network Security Bureau of the Ministry of Public Safety, Shun Chunming of the Third Institute of the Ministry of Public Security, as well as the senior security experts who are deeply convinced, NSFocus and Guo Qiquan, made an important speech at the meeting. The second generation firewall standard should rise to the national standard Guo Qiquan introduced our country network security development ...

Today, open source firewalls are numerous. 　　This article will cover 10 of the most practical open source firewalls that fit your business needs. 1. Iptables Iptables/netfilter is the most popular command line based on firewalls. It is the safe line of defense for Linux servers. Many system administrators use it to fine-tune the server. The function is to filter packets from the network stack in the kernel, including: listing the contents of the packet filtering rule set, and executing fast because it only checks the header of the packet, and the administrator can ...

Firewall products from the 90 's to the present, although through the system architecture and software form of many innovations, but in technology development and users, bandwidth growing today, but increasingly difficult to meet the challenges of many aspects. Especially in the current hottest data center and cloud computing environment, the Ethernet standard starts from million trillion to 40g/100g forward, our country all kinds of data center and engine room total already reached 50余万个. Low latency, high reliability and intelligent security management have put forward new requirements for the performance and function of gateway security products. This year, Rui Jie network, Pike, deeply convinced ...

According to IDC's estimate, from the operating cost control point of view, in the IT industry, the cost of energy consumption has reached its hardware procurement costs of 25%. The data is rising at a compound annual rate of 52%. 　　When enterprises and large and medium-sized organizations face the changing business pressure and the data of exponential growth, it is necessary to consider and pay attention to the characteristics of environmental protection and energy saving in the data center. At the same time, the Enterprise data center areas of various products have been affixed to the "green energy-saving" label, a variety of "green energy-saving" as the main selling point of the new technology is also emerging ...

In this example, you will set up and run some basic packet capture filters on your FortiGate and download and view the resulting .pcap file.

First, Nat/alg way ordinary NAT is to modify the UDP or TCP message header address information to achieve address conversion, but for VoIP applications, in the UDP net load also need to take address information, ALG means that in the private network of VoIP terminals in the net load to fill in the private network address, This address information is modified to an external address on Nat via Nat. The recognition of voice and video protocols (H323, SIP, mgcp/h248) and the control of Nat/firewall, and each additional new application will require ...

The following article is mainly about the security firewall to prevent Windows blue screen attacks in the actual operation process, the Windows family of operating systems in the crash, often displays a blue screen, which is written with some complex symbols and numbers. The blue screen attack actually takes advantage of the kernel flaw of the Windows operating system, or uses a large number of illegal format packets to send to the attacked machine, causing the network layer of the Windows operating system to be damaged, which causes the Bluetooth to panic. At present, the most common attack methods are: L.netbios attack: To ...

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IPFire is a Linux distribution that focuses on easy equipment, easy operations, and high levels of security. It operates through an intuitive web-based interface that provides many intuitive configuration options for novice-level and sophisticated http://www.aliyun.com/zixun/aggregation/13879.html "> System administrators." IPFire is maintained by a group of developers who are concerned about security and are constantly updating the product to keep it safe. IPFire with a definite ...

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