Linux uses Hosts.deny to prevent brute force ssh

First, SSH brute force hackThe use of professional crack program, with the password dictionary, login user name, try to log on the server, to crack the password, this method, although slow, but very effective.Second, violent cracking demo2.1. Basic

Brother Bird's Linux private vegetable notes (one)

Computer overview1. The computer receives the user input instruction data, after the CPU data and the logical unit computation processing, produces or stores the useful information--->i/o device +cpu+ processing information = computer.2. Computer

Installation configuration for L2TP client xl2tpd under Linux

1. Download XL2TPHttp://pkgs.org/search/?query=xl2tp&type=smart Select the appropriate version to download2. Installing XL2TP and PPPYum Install xl2tpdYum Install PPP3, Configuration xl2tpd.confFile Address:/etc/xl2tpd/xl2tpd.confFor insurance

The use of grep, egrep and regular expressions for the Three Musketeers of Linux

Linux Three Musketeers is a very powerful text processing tool in Linux, Master Three Musketeers, the text processing already presumably will have three swords in hand, the world I have feelings, three musketeers of the grep family is good at text

Linux mount (Mount) command detailed

On Linux systems, you can use the Mount command to mount a disc image file, a removable hard disk, a USB flash drive, and a Windows network share and a UNIX NFS network share.Linux is an excellent open-source operating system, can run in

The problem of processing Linux under Subversion attempt to connect to the self-built VISUALSVN server "Key usage violation in certificate have been detected" error

Under Linux, using Subversion to try to link to the SVN library set up by VISUALSVN server, the following error may be reported, Svn:options of ' Https://server.domain.local/svn/repo ': SSL handshake Failed:ssl Error:Key usage violation in

Linux patch making and patching instance "turn"

Transferred from: http://www.latelee.org/using-gnu-linux/diff-and-patch-on-linux.htmlArm for some time, during the period saw a lot of development Board manuals, the content of the manual is to teach us how to use the development Board, rather than

One linux command directory per day

Starting with a detailed system of learning Linux common commands, adhere to a daily command, so this series is a Linux command per day. The main references for learning are:1. "Brother Bird's Linux private cuisine"2.http://codingstandards.iteye.com/

Programming the memory usage for Linux CPU usage

Linux is available under the top, PS command to check the current CPU, mem usage. Here's a simple example:First, using PS to view the process of resource consumptionPs-auxWhen you view the process information, the third column is the CPU

Solve the Problem of Ubuntu Locale configuration Cannot set LC_CTYPE

Solve the Problem of Ubuntu Locale configuration Cannot set LC_CTYPE Error: locale: Cannot set LC_CTYPE to default locale: No such file or directory locale: Regenerate all locale configurations Step 1: configure the desired locale. The recommended

Zabbix source code compilation and installation, and zabbix source code compilation

Zabbix source code compilation and installation, and zabbix source code compilation Introduction: Zabbix distributed monitoring system, source code compilation and installation records (not to mention the number of times) :

Install Pear OS on EasyBCD hard disk in Windows

Install Pear OS on EasyBCD hard disk in Windows Pear OS is a Linux distro with a mac-like interface. It is based on Ubuntu and is free of charge. Unfortunately, the update of pear is not positive after it is acquired anonymously by a large company.

Troubleshoot malicious packet sending on the server

Troubleshoot malicious packet sending on the server On the 30th, I found that the traffic of one server in another service line of my data center was extremely high (the outbound traffic of a single server exceeds 900 MB), and the access to the

Common shortcut keys of Android Studio and how to use the shortcut keys of Eclipse

Common shortcut keys of Android Studio and how to use the shortcut keys of Eclipse Common shortcut keys of Android Studio and how to use the shortcut keys of Eclipse 1. display the list of recently edited files Ctrl + E 2. Quick Open Class Ctrl + N 3

What is the relationship between yum, rpm, and repo from CentOS installation R?

What is the relationship between yum, rpm, and repo from CentOS installation R? Install the software by double-hitting .exe (or. dmg) in the graphic interface, which may cause great discomfort on the Linux server. Previously, I used Google directly,

How to view video card hardware information in Linux

How to view video card hardware information in Linux Graphics processor (GPU), also known as the Visual Processing Unit (VPU), also known as the display core, visual processor, display chip, it is a type of microprocessor used to perform graphic

Use the mail command in CentOS to send emails

Use the mail command in CentOS to send emails The mail program on the Linux server calls sendmail to send mails. The sendmail server provides the function of sending mails externally. By default, you cannot send emails to CentOS. you can install a

Install nodejs and npm on centos

Install nodejs and npm on centos Nodejs is quite good. Now I want to use it to synchronize redis and mysql. Here I will record the installation methods of nodejs and npm in centos. 1234567891011121314 // Install necessary make And gcc, gcc-c ++

OpenVPN server verified by account and password

OpenVPN server verified by account and password EnvironmentServer: CentOS 6.7 32-bitClient: Windows XP Server Configuration# Disable SELinuxSed-I '/^ SELINUX \ B/s/=. */= disabled/'/etc/selinux/configSetenforce 0 # Install mysql-serverYum-y install

Install Memcached in CentOS

Install Memcached in CentOS Installing memcached in CentOS is simple. You only need to use the dependency management tool that comes with CentOS. However, you can also use the compilation method to install memcached.1. Server memcached Next I will

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