With the development of the times, the application of computer and internet technology is becoming more and more widespread. Network intrusion can affect the normal operation of systems and also leak personal privacy and business secrets, causing significant losses to individuals and businesses. Therefore, research and application of intrusion detection technology play a critical role in computer network security. This article first outlines network security issues as well as the development history, basic principles, and trends of intrusion detection technology. Then, a framework for an intrusion detection system based on protocol analysis with a CIDF architecture is proposed. The design and implementation of seven modules are mainly included: network packet capture module, protocol analysis module, rule parsing module, intrusion detection module, response module, storage module, and interface management module. The core work of this article revolves around real-time performance and accuracy and focuses on researching the following technologies: (1) developing a network packet capture module using the Libpcap function library; (2) protocol analysis technology; (3) establishing a rule description language. Based on this foundation, a prototype system for intrusion detection was developed. Finally, detection of Nmap scan attacks, monitoring special ports, detection of DOS attacks were implemented as well as detecting whether plaintext transmission packet contents contain sensitive information.
![/data # iw --debug dev wlan0 connect -w "lucky-5g" auth open key 0:1234567890
Usage: iw [options] dev connect [-w] [] [] [auth open|shared] [key 0:abcde d:1:6162636465] [mfp:req/opt/no]
Join the network with ...](https://linuxcpp.0voice.com/zb_users/upload/2023/05/202305162239148267954.png)
![驱动代码
void kalRxTaskletSchedule(struct GLUE_INFO *pr)
{
static unsigned int num = 0;
tasklet_hi_schedule(&pr->rRxTask[(num++)%NR_CPUS]);
// tasklet_hi_schedule(&pr->rRxTask);
DBGLOG(HAL, ERROR,](https://linuxcpp.0voice.com/zb_users/upload/2023/05/202305162226144313964.png)
