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  CSS performance analysis, how to optimize CSS to improve performance

  Css matching principle before optimizing css, we need to understand how css works. We all know that css is made up of selectors, attributes, and attribute values. We might write this line of code / / css.con .loulan1 p span {di

  2022-06-01 05:12:02 Views: 278
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  Could not determine this machines public hostname. Please configure one or set & # 39VisibleObjective hostname

  Just add the word visible_hostname squid.server.commm to squid.conf.

  2022-06-01 05:12:01 Views: 231
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  # Construction of small and medium-sized networks-details of vrrp protocol

  Small and medium-sized network construction-vrrp protocol details what is VRRP? Virtual routing redundancy Protocol (Virtual Router Redundancy Protocol, referred to as VRRP) is proposed by IETF to solve the problem of single point of static gateway configuration in LAN.

  2022-06-01 05:11:54 Views: 292
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  FBI issues warnings for HTTPS phishing

  "Don't trust a website just because it has a lock logo or" https "in the browser's address bar." On June 10th the Federal Bureau of investigation (FBI) issued a public warning about the rise in HTTPS phishing cases. A few weeks ago, Anti-Phishing Wor

  2022-06-01 05:11:52 Views: 276
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  IDEA encryption and decryption

  I. introduction to idea algorithm IDEA (International Data Encryption Alogrithm) was developed by XueJiaLai and James L.Massey of the Federal Institute of Technology in Zurich, Switzerland in 1991.

  2022-06-01 05:11:51 Views: 283
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  Multicasting

  The destination address of IP multicast is different from that of unicast. The destination address of IP multicast is a group address-- a class D address. Class D addresses are IP addresses from 224.0.0.0 to 239.255.255.255, of which 224.0.0.0 to 224.0.0.255 are reserved.

  2022-06-01 05:11:21 Views: 234
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  Metasploit cooperates with beef,ettercap spoofing to take down the mainframe.

  Hello everyone, I am your good friend, redbull, today to tell you about the use of beef and msf, and then use ettercap to deceive the host, login to any website, can be crawled. Mainly for testing. I hope everyone will not carry out malicious sabotage.

  2022-06-01 05:11:21 Views: 219
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  What is the network of computer network (1)?

  What is the network of computer network (1) what is the network? Implementation of network communication: tcp/ip protocol uses Wireshark to grab packets to analyze tcp/ip protocol stack. What is a network? The so-called network is an object connected in a certain form, and objects can communicate with each other.

  2022-06-01 05:11:07 Views: 229
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  LAB2.Virtual Wire

  About 1.VirtualWire VirtualWire mode can achieve security without changing the original network topology. Two interfaces are required to bind as a group. Can achieve all the security functions, support NAT. At the same time, secure inter-zone VL can be realized.

  2022-06-01 05:10:59 Views: 286
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  User and group

  User commands: useradd, userdel, usermod, getent, figner, passwd newusers chpasswd id associated files: / etc/passwd, / etc/shad

  2022-06-01 05:10:54 Views: 256
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  The FAT32 partition is formatted with a data recovery method

  Restore background-accidentally format the FAT32 partition in the morning, you need to restore the data before formatting, but now this disk is empty, as shown in the figure already used space 16KB, total capacity 30GB. Why is it formatted? there is still 16KB in the used space. This is because of FAT3

  2022-06-01 05:10:54 Views: 298
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  Delete the wrong PATH path

  Just re-assign the value.

  2022-06-01 05:10:53 Views: 209
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  Crack the startup password and single-user password of Grub system

  Crack Grub system startup password and single user password 1 enter rescue mode 2 choose default OK3 choose default OK4 choose NO, do not create a network. 5 Select Continue to continue 6 Select default OK7 Select default OK Select enable shell Start shell

  2022-06-01 05:10:49 Views: 290
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  Thread safety and reentrant functions

  Definition (1). Thread-safe functions: generally speaking, a function is called thread-safe, and when it is called repeatedly by multiple concurrent threads, it always produces correct results. (2)。 Reentrant: when a program executes to a function foo (), it receives a signal and pauses the currently executing function.

  2022-06-01 05:10:48 Views: 289
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  Some knowledge about rpm package and source code package

  The location of the files local to the rpm package: the disadvantage of the installation of the / mnt/cdrom/Packagesrpm package is that it has strong dependencies, is cumbersome to install, and sometimes makes errors due to dependencies between some installation files. Here is a list of rpm package commands to manage and do some

  2022-06-01 05:10:48 Views: 248
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  How digital envelopes work

  Digital envelope refers to the data obtained by the sender using the receiver's public key to encrypt the symmetric key, which is used to ensure the security of the symmetric key transmission. When using a digital envelope, the receiver needs to use his own private key to open the digital envelope to get a symmetric key. The encryption / decryption process of digital envelopes is shown in figure 1-

  2022-06-01 05:10:44 Views: 245
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  Privileged account and PCI/DSS

  The privileged account and PCI/DSS payment Card Industry data Security Standard (PCI DSS) is a policy developed by the Alliance of Credit Card companies to maintain card security for cardholders. PCI DSS puts forward a number of requirements for businesses that store, process and transmit cardholder data. Request

  2022-06-01 05:10:43 Views: 269
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  The method of preventing KeyMaster from scraping the net

  KeyMaster must have been used by everyone. The basic principle is that you install this software, which automatically searches the server for the password corresponding to the WIFI signal of your location, and uploads the SSID and its corresponding password that have been saved on your phone to the server. Although the software is from

  2022-06-01 05:10:40 Views: 204
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  Tacacs ACS server uses scaffolding configuration

  Tacacs ACS server uses scaffolding configuration 1. Build server 1. Use the relevant ACS5.2ISO image and install it on the virtual machine, slightly (simple) 2. Crack lisence: restart reload after installation, enter single-user mode and hang on hard disk moun

  2022-06-01 05:10:39 Views: 298
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  Buffer overflow-basic ROP-ret2syscall

  This article video: if the text is too boring, you can watch online video: https://edu.51cto.com/sd/16514 basics: we talked about ret2text,ret2shellcode earlier, today we will talk about ret2sysc.

  2022-06-01 05:10:34 Views: 254