openvpn linux

Use the Chkconfig command to view services (or programs) that start automatically at different startup levels, with the following command format:Chkconfig--listThe output may be as follows:OpenVPN 0: Close 1: Open ... 6: Close (0-6 is the starting level; Turn off/Open the automatic start option for the service at the appropriate levelIf you want to make changes to the Auto start option, the command format is:Chkconfig--level x Name On/offz.b. chkconfig--level 5

Compile the linux0.00 kernel (full Linux Kernel Analysis-based on the 0.12 kernel) I have bought a fully-analyzed Linux kernel written by Zhao Ke-based on the 0.12 kernel. It seems that the principles of the first four chapters have never had the courage to practice them by myself. Recently, I have made up my mind to take a good look at this book, and I plan to write some study notes to record some gains an

Basics of Linux Learning 1, what is Linux? To be exact, the Linux kernel (the core program of the system), whose kernel copyright belongs to Linus Torvalds, is issued under the GPL (GNU general public License) Copyright Agreement, and anyone can copy (copy) and modify ( Change), package distribution (distribute), sales, but can not add any restrictions at the tim

1. Linux virtual network card-TunThe virtual NIC Driver in Linux can be configured in two modes: point-to-point Tun mode and Ethernet tap mode. In Tun mode, IP datagram is generated from the virtual Nic, that is, layer-3 data, and the Ethernet frame from the virtual Nic In the tap mode, that is, layer-2 link layer data. IP datagram encapsulated in Tun mode can be directly transmitted to the peer end. In thi

Spread of Linux botnet Mayhem through Shellshock Vulnerability The impact of Shellshock continues: attackers are exploiting the vulnerability found in the recent Bash command line interpreter to infect Linux servers through the complex malware program Mayhem. Mayhem was found earlier this year to have been thoroughly analyzed by the Russian Internet company Yandex. The malware is installed using a PHP scrip

Linux Netfilter conntrack supports zone, netfilterconntrackI really envy myself, especially extreme worship. If I can pull Erhu as I do with Linux networks, I would dare to take a one-month long vacation without a salary, go to the park and pull Erhu for half a day... it's a pity that it hasn't been answered yet.More than a month ago, I optimized Netfilter conntrack to replace the current table with multipl

Using SSH to transfer files between Linux and Linux,linux and WindowsTransferring files between Linux and Linux:SCP file [email protected]: Document Address Example:SCP Abc.txt [Email protected]:/home/endall/abc.txtTransferring files between Windows and Linux:The author uses Putty's built-in PSCP. Other such as SSH Sec

Linux knowledge point Review: single-user mode, rescue mode, clone Virtual Machine and Linux machine logon explanation, linux knowledge point1.13 single-user mode In linux, when the password is forgotten, the password is changed (prerequisite: the password must be manually operated on a physical machine or server) At t

After this period of time to learn, I also have a certain understanding of Linux, today this blog on the previous knowledge of a summary it.The previous Linux learning blog, from the top down is learning in-depth process, my blog link is as follows:First: Analysis of the Linux operating system how the computer starts and how it operatesChapter Two: Analysis of

Linux entry record: 16. Multi-command collaboration in Linux: pipelines and redirection, linux redirectionI. Multi-command collaboration In Linux, most commands are very simple, and there are few complex functional commands. Each command often only implements one or more simple functions. By combining commands of diffe

[Linux] The local and server files are uploaded and downloaded, Linux server files are uploaded and downloaded, and linux Files are uploaded. I. File Transfer in Linux and scp command instance 1. Directory replication in Linux: Local> Remote Server Scp-r/home/abc/test1 root@

Kali linux 2.0 implements scientific Internet access through host machine proxy One of the biggest problems with using kali linux is that it cannot smoothly download and update resources from the official resource library. Now in China, the solution is to first find other unofficial update sources, then download the updates, and then install openvpn (2.0 has been

Article title: set up a VPN for a single Linux Nic and use NAT to share the Internet. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. The server uses shorewall as the firewall. In fact, shorewall is only used as a configuratio

,CASSANDRA※,REDIS※,TAIR,COUCHDBStorage Related: Nfs※,moosefs※,hadoop※,gfs※,lustre,fastdfsVersion management: Cvs,svn※,git※Monitoring alarm: mboy,mrtg,nagios※,cacti※,zabbix,munin※,hyperic※Domain Name resolution: bind※,powerdns,dnsmq※Sync Software: RSYNC,INOTIFY,SERSYNC,DRBD,CSYNC2,UNION,LSYNCD,SCP (this trip is ※)Distribution tool: Secboy※,expect※,puppet※,cfengine※,ssh+rsync+sersync※Virtual Software: XEN※,KVMIntranet Software: Iptables※,zebra※,iftraf,ntop※,tc※,iftopMail software: Qmail※,posfix※,s

[Linux] install Nginx on Linux and nginx on linux This article describes how to install Nginx in Linux. the Linux system is CentOS 7.2. 1. Download Nginx from the official Nginx website. The version used here is 1.13.6. 2. Upload the downloaded Nginx to

1.The number of files in/usr/include/Linux and/usr/src/Linux/include/Linux is notThe number of folders varies. For example, the/usr/include/Linux does not have the mosules folder, while the/usr/src/Linux/include/LinuxThis folder is available. /Usr/src/

Terminal logout exit Terminal exit Exit Ctrl+u the end of the ctrl+d to delete the next ctrl+e move to the end of CTRL + a move to the front ctrl+k delete the four after the cursor, statstat to view the file details[[Email protected]1]# stat/root/1/1. Txt.bak.bak File: '/root/1/1. Txt.bak.bak ' Size:0Blocks:0IO Block:4096Regular Empty filedevice:ca01h/51713d Inode:158242Links:2Access: (0644/-rw-r--r--) Uid: (0/root) Gid: (1003/Ruanwenwu) Access: .-Ten- - A: -:06.221000000+0800Modify: .-Ten- -

Linux system add root certificate linux Certificate Trust List, linux Certificate 1. https certificate access in linux [root@boss-test-dev001-jydx~]#curl-vhttps://mobile.mycard520.com.tw*Abouttoconnect()tomobile.mycard520.com.twport443(#0)*Trying220.130.127.122...connected*Connectedtomobile.mycard520.com.tw(220.130.127

System callsis a soft interrupt, API function, let the upper application fall into the kernelProcess ManagementProcess scheduling, scheduling algorithm, process three-stateProcess is the minimum unit fork for CPU scheduling resourcesVFS Virtual File ManagementUnder Linux, all the devices are filesDriver Bus Model 2.4 2.6 (TRUE) Support PnPExt3 ext2 vfat File Management system----> Driver Development under the driver bus modelMemory managementProcess l

Programmers are lazy, you know. Recently in development, you need to use the server's IP and Mac information. But the server is installed on the Linux system, for the multiple network, in the acquisition of IP generated a lot of problems. The following is a method for Java to obtain a local IP on a Windows system. Paste Code: Package com.herman.test; Import java.net.InetAddress; /** * @see get computer IP * @author herman.xiong * @date May 16, 20