tun tap

ARM JTAG Debugging principleOpen-jtag Development Group1 PrefaceThis article mainly introduces the basic principles of ARM JTAG debugging.The basic content includes the introduction of TAP (TEST ACCESS PORT) and Boundary-scan ARCHITECTURE,On this basis, combined with ARM7TDMI, the JTAG debugging principle is introduced in detail.This article is mainly summed up some of the previous period of experience, I hope to understand the ARM JTAG debugging user

-compress-18echook Check whether TUN/TAP support is enabled. cat/dev/net/tun 650) this. width = 650; "style =" border-bottom: 0px; border-left: 0px; border-top: 0px; border-right: 0px "title =" image "border =" 0 "alt =" image "height =" 133 "src =" http://www.bkjia.com/uploads/allimg/131228/0210152243-0.png "/> You can install pptp only after both of th

;struct Tty_ldisc *ld;TTY = (struct tty_struct *) file->private_data;2. Tun/tap Equipment Static ssize_t tun_chr_aio_read (struct KIOCB *iocb, const struct IOVEC *iv,unsigned long count, loff_t POS){struct File *file = iocb->ki_filp;struct Tun_struct *tun = file->private_data;3. Set of interface files Static ssize_t do_sock_read (struct msghdr *msg, struct KIOCB

-boot C 9. Configure the network -Make sure that config_tun is configured on the host kernel. $ Grep config_tun/boot/config-'uname-R' # Config_tun = m/config_tun = y -Load the Tun Module # Modprobe Tun -Ensure that config_bridge is configured for the host kernel. -Modify the network configuration file/etc/Network/interfaces of the host. Static Configuration: Auto br0 Iface br0 Inet static Address 192

Http://forum.ubuntu.org.cn/viewtopic.php? F = 97 t = 130148 START = 0 St = 0 Sk = T SD = I am a newbie, according to the guidance of the excellent arts, install Skyeye to run, but the network is dead, helpless, take the latest version 1.25 to install, successful ~Note:1. The Skyeye network requires the Tun module, lsmod | grep Tun:Code: Tun 12672 0 Here, after the Skyeye network is started, it is 1.2.

consistent with the client ConfigurationDev tun # You can also select the tap mode. Ca/etc/openvpn/easy-rsa/2.0/keys/ca. crtCert/etc/openvpn/easy-rsa/2.0/keys/server. crtKey/etc/openvpn/easy-rsa/2.0/keys/server. keyDh/etc/openvpn/easy-rsa/2.0/keys/dh1024.pemIfconfig-pool-persist ipp.txt Server 10.168.1.0 255.255.255.0 # IP address segment allocated to the customer. Be sure not to conflict with the client n

Install and configure pptp on the CentOS Server Note:Server Operating System: 64-bit CentOSServer IP Address: 192.168.1.100Purpose: To install and configure pptp on the server and provide the vpn dialing service externally Specific operations:(1) download the installation package1. ppp # This software package is required for pptpd InstallationHttp://poptop.sourceforge.net/yum/stable/packages/ppp-2.4.5-33.0.rhel6.x86_64.rpm2. pptpd # the latest versionHttp://poptop.sourceforge.net/yum/stable/pack

OpenvSwitch Port Mirror in OpenStack Neutron Preface I recently built an OpenStack Environment Based on VXLAN and found that the package to dump ovs interfaces is still quite troublesome. After many efforts, find some trouble shooting methods in the network environment of openstack. In addition to common tools such as ping, host, traceroute, tcpdump, ip neighbor, arp, and arping, you can also use port mirror to dump ovs packets. Environment There are two nodes in my environment. node1 enab

Disclaimer: The technology mentioned in this paper can only be used for legitimate purposes such as network security hardening. The author is unable to identify the reader to read the true purpose of this article, please read this article in the scope of domestic law, readers, once the illegal use of this article refers to the technology and violate the laws and regulations of the State, all the adverse consequences caused by the reader's independent responsibility, The author is not responsible

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build tunnels.Simpletun itself a little problem, very simple to set up the tunnel, the home as a service, the company as a client, because the company firewall only let the initiative to not let the initiative into. So what's the problem? Here's the problem. Using Tun mode or tap mode? I prefer tap mode, because this can put the home LAN Bridge to the company, t

build tunnels.Simpletun itself a little problem, very simple to set up the tunnel, the home as a service, the company as a client, because the company firewall only let the initiative to not let the initiative into. So what's the problem? Here's the problem. Using Tun mode or tap mode? I prefer tap mode, because this can put the home LAN Bridge to the company, t

easy to set up the tunnel, the home as a service, the company as a client, because the company's firewall only let the initiative to not let the initiative into. So what's the problem? Here's the problem.Using Tun mode or tap mode? I am more inclined to tap mode, because this will be able to put the home LAN Bridge to the company, the company's machine and home

IP Virtual Server Software IpvsIn the implementation of scheduler technology, IP load Balancing technology is the most efficient. In the existing IP load balancing technology, a set of servers are made up of a high-performance, high-availability virtual server through Network address translation (Addresstranslation), which we call Vs/nat technology (virtual server via Network addresstranslation), most commercially available IP load Balancer Scheduler products Use this method, such as Cisco's Loc

easy to add a base64 encoding for it... therefore, we chose to use simpletun to establish a tunnel.The simpletun itself has no problem at all. It is very simple to establish the tunnel. The home is used as the server, and the company is used as the client, because the company firewall only allows active access and does not allow active access. So what's the problem? The problem arises. In tun or tap mode?

a long time one of the most intuitive feelings, the beholder, and I believe that you read this article, for "Neutron is what" this question will have their own views. The author has previously published an article in Developworks, "Stroll in the Cloud network," in that article, the author also did not directly specifically speak Quantum HOWTO problem (at present Quantum because of a company with a duplicate name, so has been renamed Neturon), but described Qauntum the general principles behind

. ----------------------------------------------------------------------------- Solution 1: In fact, the nat function of iptables is used to implement communication between the host and the host. Referenced from leemars. I did not try this. Host: # Echo 1>/proc/sys/net/ipv4/ip_forward # enable the forwarding function # Iptables-t nat-a postrouting-j MASQUERADE # use iptables to complete NAT # Chmod 0666/dev/net/tun # set access permissions # Tunctl

call the virtual IP address) on the.?? Server Pool/realserver, a set of servers that actually perform customer requests, typically have web, MAIL, FTP, and DNS services.?? Shared storage, which provides a shared storage area for a server pool, makes it easy to have the same content for the server pool and provide the same service.LVS Load Balancing mode: Virtual Server via Network Address translation NAT (Vs/nat)?? Vs/nat is one of the simplest ways, all realserver only need to point their gate

Definition of a task-based Asynchronous Pattern naming, parameters, and return typesThe initiation and completion of asynchronous operations in TAP (task-based Asynchronous Pattern) is performed in a separate way, so only one method is named. This contrasts with the IAsyncResult mode or the APM (asynchronous Programming model, asynchronous programming models) pattern, which must have a Start method name and an end method name, as well as an event-base

==lvs Introduction = =1. IntroductionSlightly2. ArchitectureLoad balancer,server array,shared Storage.3.IP Load Balancing TechnologyDNS polling, based on client scheduling, application-level system scheduling, IP address-based scheduling, the highest efficiency IP load balancing technology.Vs/nat: Principle: Snat+dnat. Cons: With more and more user requests, the scheduler processing power becomes a bottleneck.Vs/tun: Pros: Real server has no geo-locat