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FireWall for network security products) Firewalls were the first to adopt Internet security protection products. However, during the application process, it is found that firewall products based on network port protection and packet filtering protection technology cannot effectively intercept application security (inWeb Applications). However, the firewall product is still not out of the security market, on the contrary, because of its powerful data f

Comments: While the Internet brings us convenience, the drawbacks of the Internet are gradually revealed. Many people will be attacked intentionally or unintentionally when connected, as a result, the information stored on the computer is stolen or lost by intruders, so the firewall is particularly important. Next we will introduce the classification of the firewall. With the rapid development of the INTERNET, every household now has computers connected to the INTERNET. While the network brings

Firewalls and switches are still commonly used. So I studied how firewalls and switches implement Intranet/Internet isolation. Here I will share with you, hoping to help you. With the maturity and rapid development of network and Internet technologies, more and more enterprises and institutions have begun to set up networks to automate office work and share Internet information. However, security issues hav

Reprinted Source: http:// OS .51cto.com/art/201006/207036.htm According to foreign media reports, over time, more and more users began to rely on the Internet to work, learn, and entertain, which led to more and more Internet attacks, this makes users' computers face a lot of potential risks every day. To defend against these network threats, major security vendors have successively launched various types of firewalls. As the name suggests, a firewa

Deep Firewall logging This article will explain to you what you see in the Firewall log (log). Especially what those ports mean ... This article will explain to you what you see in the Firewall log (log). Especially those ports, what do you mean? You will be able to use this information to make a judgment: Have I been attacked by hacker? What does he/she want to do? This article applies both to security experts who maintain an enterprise-class firewall and to home users who use personal

Hackers are increasingly prone to attacks on applications, and the idea that access control through firewalls can withstand most attacks is no longer appropriate for today's cyber-security situation. More and more hackers do not care how many ports the firewall shut down, their goal is to the firewall generally open ports--80 and 443, such as the use of HTTP to carry malicious data for cross-site scripting attacks, or to apply Peer-to-peer communicati

The number of concurrent connections refers to the ability of a firewall or proxy server to handle its business information flow, is the maximum number of point-to-point connections that a firewall can handle at the same time, reflecting the ability of the firewall device to access and link state tracking for multiple connections, and the size of this parameter directly affects the maximum amount of information that the firewall can support. The number of concurrent connections is an important

The progress of Web exchange technology not only optimizes the Web server, but also can be used to solve some problems caused by the current firewall. Although firewalls are highly efficient at preventing network intrusions and have become a key factor in submitting secure Web sites and services, all of these security is achieved at a high cost. In short, firewalls limit performance and scalability. Becaus

Today, knowledgeable hackers can use the ports opened by the network firewall to cleverly bypass the monitoring of the network firewall and directly target the application. They have come up with complex attack methods that can bypass traditional network firewalls. According to expert statistics, currently, 70% of attacks occur at the application layer rather than the network layer. For such attacks, the protection effect of traditional network

Firewall has become a key part of enterprise network construction. However, many users think that there are already routers in the network and some simple packet filtering functions can be implemented. So why should we use firewalls? The following is a security comparison between the NetEye firewall and the most widely used and representative Cisco router in the industry. We will explain why a user's network includes a router and a firewall. One or tw

Iptables implements network firewalls: SNAT, DNAT, and iptablessnatIptables network firewall (2)-Introduction to SNAT and DNAT ?? In the previous article, we briefly introduced the basic concepts of the firewall in the LINUX kernel, as well as the four-table-five-chain knowledge. For more information, see Introduction to the LINUX firewall. It also introduces how to set up a simple network firewall that can filter protocols and ports in a Linux enviro

The Cisco router has a very high market demand. Here we mainly introduce the background of Cisco router and firewall. Firewall has become a key part of enterprise network construction. However, many users think that Cisco routers already exist in the network and some simple packet filtering functions can be implemented. So why should we use firewalls? The following is a security comparison between the NetEye firewall and the most widely used and repre

The software industry has always liked rankings, just like the good guys in the Liangshan industry. In fact, the ranking only has reference value, and may not necessarily indicate the advantages and disadvantages of the software, just as Song Jiang became the second master because of the "timely rain" name. The figure below shows the ranking of popular firewalls, including product version numbers, scores, and ratings. The ratings are classified: excel