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  Automatic backup of network device configuration files on Linux

  The function of the script is to save the configuration on the switch instead of manually, and it is a complete operation to log in to the switch, no matter whether the version of the switch is high or low, as long as the command that can be typed within the authority can be realized. The execution of the script is as follows: telnet to the designated switch-- save the configuration-- through the exchange

  2022-06-01 03:15:25 Views: 207
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  Explore how Ubuntu stores user login passwords

  On the Ubuntu system, there are three files related to user login access control in the / etc directory: passwd, shadow, and group. In the past, the older Unix system put the hashed password directly in the passwd file, but now the * nix

  2022-06-01 03:15:25 Views: 292
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  About crossing lines and straight through lines

  Experience observation: when cat5/5e is used for similar equipment, the maximum straight-through line can only reach 100m full-duplex, and the cross-line can reach 1000m; when the straight-through line works for a long time, it is also easy to lose packets, open circuit and so on. Cat6, same as above; unless I bought fake Category 6 wire. So, it's best to press

  2022-06-01 03:15:25 Views: 276
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  Enterprise-level risk control and security governance prevention

  1 the security risks brought by the Internet the Internet began to move rapidly from the era of connection between people and people, people and information represented by social networking and search to the era of connection between people and devices, people and services. But then, there are security risks in every link of the connection. These security risks are mainly divided into the following five major

  2022-06-01 03:15:23 Views: 230
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  A brief Analysis of various ways of loading Bean in Spring

  1 the common ways to define bean are: through xml, for example, through annotations, using annotations such as @ Component on Class, such as @ Componentpublic class xxxServ

  2022-06-01 03:15:21 Views: 236
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  Failure Analysis of the phenomenon that some users of a website are unable to access

  Before the title: this text is intended to be sent to the Kelai Forum (with purpose). As a result, the Kelai Forum has been completely silent and the administrator is missing. I have not finished my post for two months. I am extremely disappointed and feel that it has been written in vain. But at least it took some painstaking efforts to post the original article on the 51CTO blog, and I didn't bother to modify it.

  2022-06-01 03:15:06 Views: 232
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  IP address details-you, who is it?

  In daily life, we use electronic devices that have the function of surfing the Internet. We all have IP addresses, just like everyone has their own name. The IP address is divided into IPV4 IPV6, and the IP address we are talking about refers to the address of IPV4. Just remember your name, no matter where you are in the world.

  2022-06-01 03:14:58 Views: 299
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  Analysis on the implementation principle of TCP Segment Offload (TSO)

  It was so hot and dry in the morning that I suddenly remembered that someone had communicated with me about the problem of TSO three weeks ago. I also described its principle, which is very simple. It is nothing more than relying on the network card hardware to segment and calculate checksum, thus liberating the CPU cycle. In fact, only one is enough, since it depends on hardware.

  2022-06-01 03:14:57 Views: 248
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  HQL query

  HQL (Hibernate QueryLanguage) is an object-oriented query language, which is somewhat similar to SQL query language. 1. Select/update/delete. From... Where... Grou

  2022-06-01 03:14:56 Views: 273
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  Apache configuration-maintaining connectivity and access control

  Main points: 1. Apache configuration analysis Apache connection maintenance Apache access control 1, Apache connection maintenance Apache connection retention related parameters whether KeepAlive opens connection retention, OFF closes, ON opens KeepAli

  2022-06-01 03:14:47 Views: 294
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  The concept of encryption and decryption and the implementation of DES encryption algorithm

  Plaintext: also known as plaincode is an information ciphertext that users can read directly: ciphertext is a collection of meaningless and messy code encryption: encryption is a process of converting plaintext into ciphertext under the control of a specific algorithm and key. Decryption: enter a key under the control of a specific algorithm to convert ciphertext into plaintext encryption

  2022-06-01 03:14:47 Views: 224
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  Printf & scanf function

  1. Printf function this is a function declared in stdio.h (printf and scanf), so you must add # include 1. 1 before using it. Usage 1 > printf (string) printf ("Hello, World!

  2022-06-01 03:14:44 Views: 216
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  Configure: error: mcrypt.h not found. Please reinstall libmcrypt.

  Rpm-ivh "http://www.aminglinux.com/bbs/data/p_w_upload/forum/month_1211/epel-release-6-7.noarch.rpm

  2022-06-01 03:14:44 Views: 245
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  Apache virtual host

  Why do you need a virtual host: first of all, it is a host, it has an operating system, we also need an IP address, but for those small sites, it is extremely wasteful. So we expect to be able to virtualize multiple hosts on one host and serve multiple different sites #

  2022-06-01 03:14:44 Views: 239
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  FreeSWITCH installation

  Pre-installation instructions for FreeSWITCH 1. With regard to git:FreeSwitch, the main R & D version is 1.6, so the main version on master is 1.6. two。 Due to some lib installation packages in the epelyum source on CentOS 7

  2022-06-01 03:14:44 Views: 234
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  AWS manually creates VPC

  Due to development requirements, it is necessary to deploy a set of ELB that is the same as the formal environment for testing. It was intended to start the creation wizard, but AWS failed and had no choice but to do it manually; 1) enter the VPC option = "your VPC==" create VPC=== "fill in the name and CIDR block (

  2022-06-01 03:14:36 Views: 286
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  Analysis of Ethernet II, PPP and HDLC protocols

  The minimum length of Ethernet IIEthernet II Ethernet frame is 64 bytes (6'6'2'46'4) and the maximum length is 1518 bytes (6'6'2 '1500' 4). The first 12 bytes identify the source section of the transmitted data frame respectively.

  2022-06-01 03:14:35 Views: 299
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  About the problem that the delay of the PPPoE client ping gateway is 15ms.

  I have done PPPoE with ROS for many times. I remember that there was a problem that the delay of ping was 15ms. After a boring search today, the result from Baidu is basically inconclusive. No one knows why. Some even answered that I had called Huawei and said it was normal. I just googled it and found MT.

  2022-06-01 03:14:35 Views: 238
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  The file contains the LFISuite that returns shell

  Download address: https://github.com/D35m0nd142/LFISuite can first get a LFIshell using this tool, and then get a reverse connection through nc!

  2022-06-01 03:14:35 Views: 214
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  Teach you to protect CDN sources step by step with the free WEB application firewall hihttps

  CDN is to distribute the content of the origin server to the node closest to the user, improve the response speed of user access, and solve the server pressure of the enterprise source website. The CDN industry will continue to grow rapidly in the next five years, with more than 50% of Internet traffic accelerating through CDN. But network security is still a very important question.

  2022-06-01 03:14:29 Views: 265