gre for dummies

CCNA Experiment 36 GRE(Generic route encapsulation)Environment: Windows XP ,Packet Tracert5.3Objective: To understand Use of GRE to master How to configure GRE. DescriptionGRE (Generic Routing encapsulation, Generic Routing Encapsulation) protocol is the encapsulation of data packets for certain network layer protocols, such as IP and IPX, so that these encapsula

Linux Network virtualization-gre vpn network method, grevpn This article does not detail gre and vpn principles. This section describes how to use the Linux gre virtual network device to implement your own vpn network.1. Requirements Assume that the requirements are as follows: Figure 1 Lan 1 is located in Shanghai, lan 2 is located in Nanjing, and both networ

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081107 Dummy, stupid. Chapter chapter. Welcome to ASP. NET 2.0 everyday apps for Dummies, the book that teaches ASP. NET 2.0 WEB programming by example. In the book that you'll find eight complete ASP. NET applications. We're not talking trivial (mediocre) hello-world-type applications here. Instead, they're real-world applications like shopping carts and discussion (discussion) Forums (forum ). You can use any of them as-is, or modify them as you see

Tags: VPN Huawei VPN GRE GRE over IPSecGRE implements IPV4 interoperability through static routingTopology:Configuration steps1, all devices run OSPF routing protocol between devices to achieve routing interoperability.2. Create tunnel interfaces on Routera and ROUTERC, create GRE tunnels, and configure static routes over ROUTERC interfaces on Routera and tunnel,

Nbsp; 1. first, we need to load the kernel module ip_gre.o. The GRE module in the previous versions of kernal is ip_gre.o, and RHEL5 called ip_gre.komodprobe-l | grepip_gre.ko above this command is to look at this module insmode/lib/modules/2.4.20-8/kernel/net/ipv4/I 1. first, load the kernel module ip_gre.o. The GRE module in the previous versions of kernal is ip_gre.o, and RHEL5 is called ip_gre.ko.Modpro

Loading GRE ModulesModprobe Ip_greCreate a tunnel named officeIP tunnel addoffice mode GRE remote 111.206.164.122 local 111.206.0.88 TTL 255IP Link Set officeupAdd an IP address for tunnelIP Add add10.100.100.1/30 Dev OfficeCreate a routing table with a table name of 136IP route add default via 103.246.132.61 table 136To create a policy that specifies the route table 136 when the local source IP is 192.168.

1.IP descriptionVM1 192.168.2.2VM2 192.168.2.32. Start the POX controller on the VM1CD pox./pox.py forwarding.l2_learning3. Start the mininet on VM1, use the simplest topology, connect to the Pox controllersudo mn--controller=remote,ip=192.168.2.24. Start the mininet on vm2, use the simplest topology, connect to the Pox controllersudo mn--controller=remote,ip=192.168.2.25. Modify the IP of H1, H2 on VM2Mininet> xterm H1 H2Terminal Input in H1Ifconfig H1-eth0 inet 10.0.0.3Terminal input in H2Ifco

J. Timothy King wrote a great article: Twelve benefits of writing unit tests first ). Unfortunately, what he said at the end of the article is completely superfluous. However, if you don't want to get rid of the old habit of writing code first, if you think that self-stick is more important than designing good software, Well, I am sorry for you. Using your pity on people who do not agree with you is not the most effective way to promote your claim. Let's take a look at Mr t's example. He bega

Release date:Updated on: Affected Systems:Linux kernelDescription:--------------------------------------------------------------------------------Bugtraq id: 47852Cve id: CVE-2011-1767 Linux Kernel is the Kernel used by open source Linux. The Linux Kernel "ip gre" module has a denial of service vulnerability of NULL pointer reference. A local attacker can exploit this vulnerability to cause a Kernel crash. This vulnerability can also cause DoS atta

650) this. width = 650; "src =" http://www.bkjia.com/uploads/allimg/131227/044P51D2-0.png "title =" .png "/> Basic configurations: 1) The loopback ports of R1 and R2 are 192.168.1.1/24 and 192.168.2.1/24, respectively. 2) the IP addresses at both ends of the link use the vro ID, for example, s0/0: 192.168.12.1 of R1. Q1: What is tunnel? Q2: How to Create tunnel in GRE? Q3: tunnel details. Answer1: Tunnel is a virtual interface similar to the loopb

Article Title: Configure ipip and gre tunnels in Linux. Linux is a technology channel of the IT lab in China. Including desktop applications, Linux system management, kernel research, embedded systems, open-source, and other basic categories. Create a ifcfg-tunl1 file under/etc/sysconfig/network-scripts The content is as follows: DEVICE = tunl1 TYPE = IPIP PEER_OUTER_IPADDR = 219.216.98.110 MY_INNER_IPADDR = 10.0.1.1/24 Configurin

Creating an IP tunnel using GRE on Linux Contents [Hide]· 1 IP tunelling· 2 Starting Configuration· 3 tunnelling ObjectiveO 3.1 Create TunnelsO 3.2 Additional RoutesO 3.3 Delete Tunnels· 4 Network DiagramO 4.1 Debian Configuration· 5 References IP tunelling We'll do IPv4 tunneling using GRE. GRE is a tunneling protocol this was origin

The tunnel, literally, is a passageway, which is made up of point-to, stand-alone and other. The tunnels under Linux are not well understood, write down the recently built GRE tunnels and route forwarding functions.Let's talk about the basic concepts of tunnels:The interconnection of two or more subnets of a technology (protocol) or strategy through another technology (protocol) or policy, called overlay topology, is one of the timeless themes of tele

650) this. width = 650; "src =" http://www.bkjia.com/uploads/allimg/131227/05062443b-0.png "title =" GRE Over ipsec ).png "/> GRE Over IPSec, as the name suggests, is to establish a GRE tunnel on the IPSec interface, while an IPSec Encryption mode is tunnel mode to encrypt the network segment to the network segment ), this is the

Sysname R1 Interface GigabitEthernet0/0/0 Ip address 202.100.1.1 255.255.255.0 Interface LoopBack0 Ip address 192.168.4.1 255.255.255.0 Interface Tunnel0/0/1 Ip address 192.168.1.1 255.255.255.0 Tunnel-protocol gre Source 202.100.1.1 // local public network address Destination 202.100.2.3 // public IP address of the Peer end Ospf 110 router-id 192.168.1.1 Area 0.0.0.0 Network 192.168.1.1 0.0.0.0 Network 192.168.4.1 0.0.0.0 Ip route-static 0.0.0.0 0.0

Summary of GPRS APN-GRE Tunnel ConfigurationThis article is a practical application case about the establishment of the APN-GRE tunnel, the configuration is based on the Cisco 12012 router, using TFTP. You can see that similar applications may be encountered in the future! Welcome to the discussion! Using 990 out of 29688 bytes ! Version 12.2: Service timestamps debug uptime Service timestamps log uptime N

Experimental environment: Here we use a Huawei s3526 switch to simulate Internet two H3C firewalls, two quidway s2403h-hi switches Two 192.168.1.0 and 192.168.2.0 network segments are connected by the two sides of Huawei's firewall respectively Achieving cheap connectivity using VPN technology To allow two LANs to communicate with each other, the GRE tunneling technique is used between two firewalls (the so-called tunnels are logical virtual) Exp

Provides various official and user-released code examples. For code reference, you are welcome to exchange and learn about the complexity of the official permission system. Beginners are often confused and confused. This is my dummies version transformation. Please refer to your tasting. The official rbac. I read a lot of articles, although I finally understood it, but it does consume a lot of brain cells. It also requires database support. It is diff

I am a postmaster for server dummies. I would like to ask if there is any server one-click website opening software to enable FTP and MYSQL databases with one click, space expiration reminder and other functions ------ solution ------------------ you have a good study, it is not difficult to use appserv, all is the next step. Nagix is the most technically demanding one. Server dummies website software I am