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
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
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
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
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
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"
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
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
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
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
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
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
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.
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 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
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
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
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.