Attacks and defense against common network devices

A: How do I attack common network devices and defend against them? Q: This article will discuss the attack methods and defense measures of hubs, switches, routers and firewalls. 1. Hub Working principle:A hub is a half-duplex conflict device. All

Cryptography and Identity Authentication Technology-principles and practical applications of PKI & lt; 2 & gt;

Understand and deploy symmetric encryption 1. Prepare the symmetric encryption software FatCryptoTool and office Password Recovery to crack the office Password. 2. symmetric encryption system: Dedicated encryption, fast and efficient. 3. Data

Cryptography and Identity Authentication Technology-principles and practical applications of PKI & lt; 1 & gt;

Encryption and decryption Authentication 1. symmetric encryption Single-key encryption: Advantages: 1. Faster than asymmetric key encryption 2. More difficult to crack Disadvantages: 1. A security mechanism is required to distribute keys. 2. Key

Excellent video courses required for network security (a total of 172 class hours), recommended by experts

Dear lunch: BKJIA is committed to helping experts share technologies and monetize technologies, so that technology enthusiasts can easily and cheaply obtain high-quality learning resources. Good coffee should be tasted with friends, and good videos

Configure L2TP VPN in Netscreen

L2TP VPN is a solution for connecting mobile office staff to the company's intranet. Let's demonstrate the configuration. Topology: 650) this. width = 650; "src =" http://www.bkjia.com/uploads/allimg/131227/09335L022-0.png "title =" 2.PNG" alt = "115

Netscreen and Juniper SRX run OSPF

Topology: 650) this. width = 650; "src =" http://www.bkjia.com/uploads/allimg/131227/0930104Q9-0.png "title =" 1.PNG" alt = "151657471.png"/> Netscreen Configuration: Set zone name y1 Set interface "tunnel.1" zone "y1" Set interface "loopback.1"

Cacti simple architecture

Environment: rhel6.4 x86-64 selinux and iptables disablesReference webpage:Http://docs.cacti.net/manual:088:1_installation.1_install_unixSnmp Configuration:Http://www.cyberciti.biz/nixcraft/linux/docs/uniqlinuxfeatures/mrtg/mrtg_config_step_3.php1.

Test A security software-non-toxic Space

Mr. Wang recently tested a security auxiliary tool named non-toxic space official website: http://www.virusfree.com.cn), the main interface 1, 2 shows that the program design ideas are different from the current market all security software, the

Configure the ASA Security Configuration & amp; Environment setup

Topology Analysis 650) this. width = 650; "style =" border-bottom: 0px; border-left: 0px; border-top: 0px; border-right: 0px "title =" clip_image002 "border =" 0 "alt =" clip_image002 "src ="

Netfilter for Linux Firewall

About Netfilter The packet filtering firewall in Linux can run on the 2.4 and 2.6 kernels. It is integrated into the kernel and is not a daemon process of the system. It processes Layer 2, 3, and 4 of the OSI model; only data headers can be

Experiences of working Linux Firewall

1. Iptables firewall does not prevent DDOS attacks. We recommend that you purchase a hardware firewall before the entire system during project implementation to prevent DDOS attacks and port ing. If you have special security requirements, the

Centos server iptables script

650) this. width = 650; "onclick = 'window. open (" http://blog.51cto.com/viewpic.php? Refimg = "+ this. src) 'border =" 0 "alt =" "src =" http://www.bkjia.com/uploads/allimg/131227/0U3432X9-0.jpg "/> Note: Lan Gateway: 192.168.1.1 Eth0 192.168.1.110

Simulate the real network environment on Hyper-v and build an ARP attack test

This is a real experience. When I showed my students the ARP attack test in the data center, the entire data center was disconnected, the broadcast software was disconnected, and the student machine was out of control, naturally, I cannot see my

Technical Implementation Mechanism of Single Sign-on

Source: Ling yunzhi's blog Http://blog.sina.com.cn/xiaolingyuanzi Technical Implementation Mechanism of Single Sign-onWith the popularity of SSO technology, SSO products are also full of sky. All famous software vendors provide corresponding

Evaluation of domestic network security

When talking about network information security, you will naturally think of companies such as 360, rising, and Kabbah. These Client Security has penetrated into the hearts of users. However, network information security not only includes Client

Use shell scripts to automatically reject attempts to log on to FTP

The ftp software adds a script for the ftp server security For vsftpd. Sometimes we don't know that someone is logging on to their ftp server in a trial. With this script, we can do it. Script content # cat vsftpd. sh #! /Bin/bashCONF =/etc/vsftpd.

Full configuration of Multi-Point VPN (static)-enterprise internal network connection solution of XX Company

Recently I deployed a company's enterprise intranet, so I set up a test environment to share the test results with you.I. Purpose:Xxx enterprises include Beijing Corporation, Shanghai Branch and Shenzhen Branch. The company uses the NAT address

Big talk IT 16th: Security PK for Public and Private clouds

Big talk IT 16th: Security PK for Public and Private cloudsMo is an IT editor. The cloud computing topic is hot in the IT industry. She wants to answer questions about cloud computing recently, but cloud computing is driving her crazy. What worries

Install Microsoft BitLocker Administration and Monitoring

Security is one of the most important topics, especially for enterprise users. Through Windows 7, Microsoft provides built-in security functions, such as BitLocker, which is a fully encrypted operating system function that can help protect PCs in

How can I use audit?

Intranet security is very important, but it is often underestimated and controversial, that is, behavior audit. With the improvement of enterprise security awareness, the role of audit is gradually known to everyone, and they will also use audit for

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