[Experimental environment] veryhuo.com
C3640-IK9O3S-M Version 12.4 (10) veryhuo.com
[Tutorial Objective] Lie's Fire Network
The tunnel technology is used to expand the frame relay switch simulated by the router to make up for the insufficient frame relay interface caused by limited router interfaces. Lie-fire-network
[Experiment topology]
Liehuo.net
Veryhuo.com
[Experiment description] liehuo.net
In the experimental environment, because frame relay
return a response or response data to the server, and the server will forward it to the client. Servers and gateways are independent applications, so their responsibilities are clearly divided. This simple protocol (input request, transfer, and response) is the oldest and most commonly used Server Extension Interface CGI.
6. cgi applications are independent of servers, so they can be used in almost any language in advance. CGI processing is invisible to users. The client does not know the trans
This article attempts to describe what a VPN tunnel is in simple language and explains how VPN provides strong anonymous and privacy protection.
The operation performed by the VPN tunnel is called Data encapsulation. To understand what encapsulation is, let's make a simple analogy. If you are a political refugee living in another country, the secret of your place of residence is crucial to your personal saf
. Modprobe IPv6 again. Execution successful. The server already has an IPv6 address.
12.the operation log is on the Windows table, and ipv 6.txt is started"
13. Move to my documents> documents.
14. Establish a tunnel connection for the two machines
15. The ideas are summarized as follows:
① Specify the IPv6 address for the two machines.
② Enable tunnel on two machines, ifconfig sit0 up
③ Direc
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.
Modprobe-l | grep ip_gre.ko
The above command is to look at this module
Insmode/lib/modules/2.4.20-8/kernel/net/ipv4/ip_gre.ko
The above command loads the ip_gre.ko module.
Note that you need to load it again after each restart or logout.
2. Start the GRE Tunnel
Ip tunnel
During the War of Resistance against Japan, tunnel warfare was carried off extensively in the vast areas of the North China Pl Ain. Generally speaking, villages connected by tunnels lay in a line. Except the ends, every village was directly connected with the neighboring ones.Frequently the invaders launched attack on some of the villages and destroyed the parts of tunnels in them. The eighth Route Army commanders requested the latest connection state
Title Link: http://acm.hdu.edu.cn/showproblem.php?pid=1540To give you a row of consecutive points, you can do the following three kinds of operations:1. Delete a point2, inquiry and length of the segment of a point (if the point has been deleted, the length is 0)3. Restore the last deleted pointThe segment tree calculates a continuous interval, and the node holds the left continuous length LM, and the right continuous length of RM1 /*2 * Problem:hdu 1540 tun
Problem descriptionduring the War of Resistance against Japan, tunnel warfare was carried off extensively in the vast area S of North China Plain. Generally speaking, villages connected by tunnels lay in a line. Except the ends, every village was directly connected with the neighboring ones.Frequently the invaders launched attack on some of the villages and destroyed the parts of tunnels in them. The eighth Route Army commanders requested the latest c
HDU 1540 Tunnel Warfare (line segment Tree single point update + interval merge), hduwarfareProblem DescriptionDuring the War of Resistance Against Japan, tunnel warfare was carried out extensively in the vast areas of north China Plain. generally speaking, ages connected by tunnels lay in a line. cannot the two at the ends, every village was directly connected with two neighboring ones.Frequently the invad
OpenVPN-ng, an application-layer tunnel for Mobile Life
VPN makes people think that it is always a good thing and a way to escape from supervision. In fact, VPN has become the only synonym for escaping from supervision. You see, no matter what technology, IPSec, or WEB Proxy, as long as it is the technology that encrypts the original information, it can all be called VPN, so there is a so-called layer-2 VPN technology, layer-3 VPN technology, or even
result after the combination of the user name and password, that is, the username: Password is base64-encoded.
In fact, encoding is meaningless to security. base64 cannot be regarded as encrypted in strict sense. Currently, encryption of keys is not required in the era of information security.AlgorithmThe encoding method is more appropriate. The user name and password can be obtained immediately after such a package is captured.
HTTP/1.0 200 connection established
After receiving the rece
During the War of Resistance Against Japan, tunnel warfare was carried out extensively in the vast areas of North China Plain. generally speaking, ages connected by tunnels lay in a line. cannot the two at the ends, every village was directly connected with two neighboring ones.
Frequently the invaders launched attack on some of the versions and destroyed the parts of tunnels in them. the Eighth Route Army commanders requested the latest connection
Ethernet tunnel technologies such as provider backbone transport (PBT) and Transport MPLS (T-MPLS) are generating a great deal of interest. tunnel technologies aim to enable "connection-oriented" Ethernet transport with high levels of reliability, manageability and scalability.
Note that PBT has been given a new name by the ieee in the project authorization, and we'll use the new name: provider backbone bri
System Centos6.0
Here, I will not talk about tunneling or IP tunneling technology.
In my case, the tunnel is different data centers and different public IP addresses. How can they achieve LAN performance and configure private IP addresses for the same network segment? interconnection can be achieved;
I wrote this article because many people found a lot of searches for nat and DR modes when writing lvs articles. Why not write tun? I think it is because
original IP header as application data, which is encapsulated by the SSL protocol. Then, the data is sent to the other end of the VPN and enters from the real nic at the other end, then, because this is the end of the tunnel, the data goes directly to the application layer. At the application layer, the VPN Server waits there to get the raw VPN bare data and its IP header at the sending end, what is the purpose of the server to get this thing? What s
Hdu1540 Tunnel Warfare (line segment tree)Tunnel WarfareTime Limit: 4000/2000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission (s): 6052 Accepted Submission (s): 2340Problem Description During the War of Resistance Against Japan, tunnel warfare was carried out extensively in the vast areas of north China Plain. generally speaking, ages
(This case uses two cisco2500 routers, IOS (tm) 2500 Software (C2500-IS-L), Version 12.2 (15) T9, the interconnection between two remote ipv6 subnets can be achieved by using the ipv6 v4 trunk and ipv6 6to4 tunnel combined with ipv6 Static Routing.
Topology Description: Use the e0 interface of the two routers to interconnect and simulate the ipv4 trunk. Use loopback0 to simulate the two remote ipv6 subnets, 6to4tunnel must use the standard ipv6 addre
Generic Enapsulation Tunnel is a kind of network tunneling technology, it is called General tunneling technology, it can be used to package the Ethernet, IP, MPLS and other packets in the IP packet to be forwarded in the network, there is a large-scale application.The Linux system natively supports the GRE interface with the following configuration commands:IP tunnel Add gret1 mode GRE remote 45.42.104.183
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