In ancient times, hackers cut corners and today there are neighbors.

"Primary Network Card", each set of 300 yuan underground hot selling expert indicates that the victim's network is prone to Trojan horse theft and privacy In the Han Dynasty, Kuang Heng's story of "cutting the wall and stealing the Light" went viral,

Main functions of OSI reference model layers

1. Physical Layer: complete original bit transmission. 2. data link layer: reliable data transmission between adjacent nodes. 3. Network Layer: complete data transmission between any two points. 4. Transport Layer: completes data communication

Huawei Eudemon 100E password recovery

Eudemon 100EThe initial user name and password of the system are both"Eudemon", SiumemThere is one hereEudemon100EHowever, how can we solve the problem by using the initial username and password? Cisco's Huawei team has similar solutions. crack them:

Basic BGP Configuration

     R1: Current configuration: 1299 bytes! Version 12.3 service timestamps debug datetime msecservice timestamps log datetime msecno service password-encryption! Hostname r1! Boot-start-markerboot-end-marker !! Memory-size iomem 5no aaa

Dividing instances by subnets

  Your job is to plan a company's network. This network requires three independent subnets. However. As the company grows. The number of subnets may be grayed out to 100 in the future. The maximum number of hosts in each subnet is 200. And does not

Domain control and IP address Modification

We may need to re-plan the IP address. Can I change the IP address of the domain controller directly? If not, what should I do?A: According to your description, I understand that you want to modify the IP address of the DC. You can directly modify

Subnet Mask entry

The primary function of the subnet mask is to inform the network device which part of a specific IP Address Contains the network address and subnet address and which part is the host address. The routing device of the network can make a routing

Solution to VPN error 800

"Error 800: cannot establish a VPN connection" occurs when you connect to a VPN. The following are generally the reasons: 1. Check that the "destination host name or IP address" in the configuration uses a domain name instead of an IP address.

How to maintain the local area network (LAN)

In the LAN, the Internet is often disconnected, causing headaches. The computer system is stable and the lan network speed is fast. A good user working environment interface is required, in this way, the Internet access speed in the LAN is

Troubleshooting of Logon failure due to wrong password input three times during D-Link Login

To log on to the vro configuration page, enter 192.168.0.1 in the browser address bar and enter the user name and password in the following dialog box. By default, the user name is admin and the password is blank.However, if the password entered

ATEN-Chapter 9 OSPF multi-region Configuration

Tool used in the experiment: Xiao fan Simulator 1. Configure interface information on each vroR1Router>Router> enableRouter # config terminalRouter (config) # hostname R1-jinR1-jin (config) # interface loopback 0R1-jin (config-if) # ip address 1.1.1

Large-scale network IP planning

  Requirements:   1. Scientific   2. Rationality   3. scalability   4. Ease of Management       Data: Binary: 128 64 32 16 8 4 2 1   11111111.111111.111111111111.111111   Case: A university now needs to build a network. In order to facilitate the

Apply a lock to your ip address

  At present, many organizations have configured Local Area Networks. To facilitate network management and improve the login speed, network administrators generally specify IP addresses for each computer in the local area network. However, in

Network Protocol basics: ARP Analysis

Summary of ARP ARP: Address Resolution Protocol. RARP: Reverse Address Resolution Protocol. Different networks, such as Ethernet and Token networks, have different addressing mechanisms at the data link layer. In an Ethernet LAN, a host sends

Quickly build svn lan servers

  Let's talk about the original intention. Some time ago, I wanted to copy my code to my girlfriend's computer so that no matter which computer I was on, I could get the Code. However, there was a problem with version inconsistency between the two

Ethernet Layer 1: wiring, speed, and duplex

  RJ45 pin leads and Class 5 Wiring   RJ45 is a common Ethernet interface with eight copper wires. A network cable has two headers. The two ends are called a direct line, and the two ends are called a cross line. The full image is called an inverted

Some Understanding about ARP

  First, the topology is as follows:         I. PC1 sets 192.168.1.254 as its default gateway.   When PC1 communicates with PC2 for the first time, we all know that when data is encapsulated between Layer 3 and Layer 2, ARP is called to

It's so powerful! Packet Tracer Packet capture

First of all, let's start the Cisco Packet Tracer software. I use Version 5.3. If the English language is really bad, we can turn the software into Chinese. We recommend using the English version, which is good for learning. After the software is

Portfast and bpduguard applications

PortFast accelerates the convergence of terminal hosts into the stp network.Only applicable to ports that are connected to the host (Computer) on the vswitch and should not be used on the ports of network devices that are connected to the vswitch,

TCP/IP Study Notes (3)-IP protocol, ARP protocol, RARP Protocol

Put the three Protocols together for learning because these three protocols are on the same layer. ARP is used to find the Mac address of the Ethernet NIC of the target host, and the IP address carries the message to be sent. The data link layer can

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