deep packet inspection firewall

connection table in the core part of the firewall, and treat inbound and outbound data as sessions, and use the status table to track the status of each session. The status detection technology improves the security protection capability while improving the traffic processing speed. Status Monitoring Technology uses a series of optimization technologies to greatly improve firewall performance and can be ap

or disable data streams based on the source IP address, destination IP address, source port, destination port, and communication protocol. Unlike the packet filtering firewall, the status detection Firewall makes decisions based on session information, rather than packet information; When the status detection

Test kernel version: Linux kernel 2.6.35 ---- Linux kernel 3.2.1 Original works, reprint please mark http://blog.csdn.net/yming0221/article/details/7572382 For more information, see column http://blog.csdn.net/column/details/linux-kernel-net.html Author: Yan Ming Knowledge Base: this firewall is developed based on a good concept of the Linux kernel network stack. My analysis of the network stack is based on the earlier version (Linux 1.2.13 ), after

As network security problems become increasingly serious, network security products have also been paid attention. As the first network security product and the most popular security product, firewall is also favored by users and R D institutions. From the perspective of firewall applications, there are basically two types: Network-level firewalls and personal firewalls. Windows is the most widely used PC

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

and functions Rong | Teng mobile Internet signaling collection currently supports a maximum of 384 10g, 48g, and 96 10g, 14-groove ATCA Frame DPI DPI is called "Deep Packet Inspection" and "Deep Packet detection ". The so-called "depth" is similar to common packets. In com

Deep Firewall logging The DNS hacker or crackers may be attempting to perform zone transfer (TCP), spoof DNS (UDP), or hide other traffic. Therefore, firewalls often filter or record port 53. Note that you will often see 53 ports as UDP source ports. Unstable firewalls typically allow this communication and assume that this is a reply to a DNS query. Hacker often use this method to penetrate a

Use IP Address Spoofing to break through firewall deep technical analysis General access control is mainly set in the firewall to develop some security policies: for example, the resources of the internal LAN are not allowed to be used by users on the external network; the area is not protected (also known as the non-military zone) it can be an internal or exte