openvpn client linux

Transfer files to your Linux instance using the PuTTY secure replication clientThe PuTTY Secure replication client (PSCP) is a command-line tool that you can use to transfer files between a Windows computer and a Linux instance. If you prefer a graphical user interface (GUI), you can use an open-source GUI tool called "WinSCP". For more information, see Transfer

Examples of socket traffic under Linux (client) and Windows (server side):(1) The first is windows to do the client, Linux to do the service-side programWindows Client Side #include #include #pragma comment (lib, "Ws2_32.lib") #define PORT 5000 #define IP_Addre

size when the Epoll_create () was created, the parameter timeout is the timeout (in milliseconds, 0 returns immediately , 1 will be uncertain, and there are statements that are permanently blocked). The function returns the number of events that need to be processed, such as returning 0 to indicate a timeout.Application Examples:Below, I refer to a simple program written by someone else in Google code to illustrate it. SVN path: http://sechat.googlecode.com/svn/trunk/The program a simple chat r

of the subscription. A nice day! Go Shopping with me topic message.Mtqq_mosquittoMtqq_mosquittoIn addition to the Android side can send messages, of course, can also receive. Open another terminal and publish a message with the shopping topicmosquitto_pub -t shopping -m "Sorry,I have no time."You can see the Logcat in Android and show that you have received the corresponding message.Mtqq_mosquittoMtqq_mosquittoandroid Project DownloadHttps://github.com/djstava/MqttClientAndroidReference documen

,buf,strlen (BUF), 0) = =-1){printf ("Return%d\n", ret);Perror ("message sent Failed");Exit (errno);}}}void* th_recv (void* Arg){Char Buf[buflen];int CONFD;CONFD = Get_conn (Recv_port);while (1){memset (Buf,0,buflen);Switch (recv (confd,buf,buflen,0)){Case-1:///error occurredPerror ("Failed to accept message");Exit (errno);Case 0:///peer have performed an orderly shutdown.printf ("Server exited, chat terminated");ReturnDefault://Receive succssedprintf ("server:%s", buf);}}}int main (){pthread_t

,"Socket error:%s \a\n", Strerror (errno)); Exit (1); }//before calling the function connect, you need to specify the socket address of the server process//filling the SOCKADDR structureBzero (AMP;SERVER_ADDR,sizeof(structsockaddr_in)); Server_addr.sin_family=af_inet; Server_addr.sin_port=htons (portnumber);//server_addr.sin_addr= * (struct in_addr *) host->h_addr);//initiating a connection request establish a connection with the remote server if(Connect (SOCKFD,structSOCKADDR *) (AMP;SERVER_ADD

, "usage:%s hostname portnumber\a\n", argv[0]);Exit (1);}/* Client starts to build SOCKFD descriptor */if ((Sockfd=socket (af_inet,sock_stream,0)) ==-1){fprintf (stderr, "Socket error:%s\a\n", Strerror (errno));Exit (1);}/* Client program fills the data on the server */Bzero (server_addr,sizeof (SERVER_ADDR));Server_addr.sin_family=af_inet;Server_addr.sin_port=htons (PortNumber);server_addr.sin_addr=* (stru

Preface This section describes how to use basic Linux/Unix functions to compile a complete server and client example that can be run on Linux (UBUNTU) and Unix (FreeBSD, the functions of the client and server are as follows: The client reads a row from the standard input

In VirtualBox, sharing is relatively convenient if both the client and host are Windows. This is typically accessed through a path such as \\vboxsvr\shared.But if the client is Linux, it's a bit of a hassle (and it's good to know after you know it)First step: Install VirtualBox additioanl ToolsStep two: Set up a shared directoryStep three: Create a special device

Ubuntu 14.04 + Mutt + Msmtp configure the command line mail client in Linux Install msmtp mutt in Ubuntu 14.04 Apt-get install-y msmtp mutt Configure msmtpAfter the installation is complete, configure msmtp first. The default configuration file varies with the operating system version and can be viewed through msmtp -- version. # Msmtp -- versionMsmtp version 1.4.31Platform: x86_64-pc-

How to share disks between Linux client systems in VirtualBox In this tutorial, let me show you how to share a disk between two Linux client systems in VirtualBox. This tutorial is helpful for those who want to configure and play with GFS or clusters. Is the standard interface of VirtualBox: Use Virtualbox in Ubu

- up connection .found that the computer room network is not modified, meaning that there is no dial-up connection.OK, buy a wireless network card connected to the campus WiFi headquarters.Bought found Linux no driver (my good melon-_-Check a half-day drive module, each module according to a test, are useless.Finally consider ndiswrapper install Windows driver.Source download good, found archlinux default do not let use make (_make)For Ubuntu, install

Get server macCopy codeThe Code is as follows:/**Obtain the MAC address source code of the NIC. Currently, Windows/LINUX systems are supported.Obtain the physical (MAC) Address of the machine Nic**/Class GetmacAddr {Var $ result = array (); // returns a string array with a MAC addressVar $ macAddr;/* Construct */Function _ construct ($ osType ){Switch (strtolower ($ osType )){Case "unix": break;Case "solaris": break;Case "aix": break;Case "

Oracle 11gThe clientLinuxThe configuration process is a little bit difficult, but as long as we configure step by step, there is nothing. This article describes how to configure the Oracle 11g client on Linux. First download several compressed packages from OTN, for: http://www.oracle.com/technology/software/tech/oci/instantclient/index.html, And then according to your platform, choose a different download,

dependency packages in the installation information. Remember the names of these dependency packages and copy them out. bitnami@linux:/var/cache/apt/archives$ sudo apt-get install mutt[sudo] password for bitnami: Reading package lists... DoneBuilding dependency tree Reading state information... DoneThe following extra packages will be installed: libgpgme11 libpth20 libtokyocabinet8Suggested packages: gpgsm urlview aspell ispell mixmasterThe f

You can use the mount command or add entry items to/etc/fstab. The entry items in/etc/fstab include an NFS mount type. The NFS file system name consists of the host name of the file and the path name of the mounted directory. The two parts are separated by colons. For example, computer1:/home/project indicates that a file system is attached to/home/project in computer1. It is recommended that the client use the mount command to mount the file. The fol

","*","*". SQLSTATE = 08001 Map the VCENAME value of dbm to the port number in/etc/services.Db2 update dbm cfg using SVCENAME 50000 3. restart DBDb2stop forceDb2startDb2 activate db test1 4. Confirm Parameters[Db2inst1 @ node1 C] $ db2set-all[I] DB2COMM = TCPIP[G] DB2_EEE_LICENSE_POLICY = 4295032864[Db2inst1 @ node1 C] $ netstat-an | grep 50000 Make sure that the DB2COMM parameter has been set and port 50000 has been enabled. 5. pagecode ErrorDb2 connect to ds_test1 user db2inst1 using 123456SQ

Article Title: Use newsgroup client in Linux network environment. 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 structure of a newsgroup is tree-like. It is generally classifi

Download pptp-1.7.2.tar.gzHttp://pptpclient.sourceforge.net/root user upload to linux host/tmp directoryUnzip installation: cd/tmptar xzf pptp-1.7.2.tar.gzcd pptp-1.7.2make make install change Configuration: 1. Change the dialing user information file cd/etc/pppvi chap-secrets # Secrets for authentication using CHAP # client server secret IP addresses ###### redhat-config-network will overwrite this part !

) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/49/99/wKiom1QWZqPw4rwtAAGpwh8_ZZ0445.png "title=" Sam34-1. PNG "alt=" Wkiom1qwzqpw4rwtaagpwh8_zz0445.png "/>After the above configuration is complete, the Samba server will automatically complete the synchronization when the user modifies the system user password using passwd, but if the new user on the system must first use SMBPASSWD-A to add the user to the Samba server before using passwd to set the user's system password , or you will n