gre for dummies

Description: A company's PC1 network segment 192.168.1.0/24 to and B Company PC2 Network segment 172.16.2.0/24 establish GRE tunnel communicationConfiguration ideas:1, R1 and R2 to be able to communicate--R1 and R2 respectively configure default routes to the ISP2, the new tunnel port, set the IP, the two sides to the same network segment, configure the source is the public network export IP and destination is the other public network export IP3, at t

I'm a Dummies. Today I want to talk about how to use log4net, of course. Under. net. First, make sure that you have downloaded the log4net. dll file andProgramIn the bin folder, otherwise ...... 1: In web. configAdd: 2:Add: 3: Finally, define a log object in the Aspx. CS or CS class to record the log: Private Static log4net. ilog log = log4net. logmanager. getlogge

Are you a normal dummies? Come out first: If you wait for the bus as usual after work on a certain day, but it has not arrived more than half an hour, it is clear that something has happened on the road. At this time, your colleague Tom also came to wait for the car. He proposed to take a taxi home when he saw your situation. You don't think this is a good idea, but you will find that your direction is the opposite of that of Tom. Tom hesitated and d

Affected Systems: Cisco IOS 12.2 Cisco IOS 12.1 Cisco IOS 12.0 Description: Cisco Internet OS IOS) is the operating system used by Cisco devices. Cisco Systems IOS has a vulnerability in parsing GRE packets containing GRE source route information. Remote attackers may cause devices to process packets incorrectly. If a specially crafted GRE message is received,

Tutorial topology: Topology analysis:Consists of four routes. The e0/1 ports of R1 and R4 simulate pc1 and pc2R2 and R3 simulate the InternetPurpose:The two ends of the LAN can communicate with each other and can run dynamic routing protocols;Encryption of LAN traffic at both ends;LAN at both ends can access the InternetExperiment Analysis:Use IpSec to encrypt traffic at both endsIf the LAN can run the dynamic routing protocol, GRE must be run on the

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

GRE over IPsecThis kind of thing can be basically NAT and all kinds of encryption Baotou thingsR1:!interface ETHERNET0/0NBSP;IP Address 192.168.12.1 255.255.255.0ip OSPF 1 area 0---------------- -----------------------------------------------------------------r2:crypto ISAKMP Policy 10 Authentication Pre-sharecrypto ISAKMP key Cisco address 192.168.34.4 !! Crypto IPSec Transform-set CCNA esp-des esp-md5-hmacmode Transport!!! Crypto map Jiance 1 Ipsec-

Some basic concepts of the GRE protocol have been summarized in the previous article. I don't know what you are familiar. Next we will give a simple illustration of the specific application. I hope you will find some benefits. 1. Multi-Protocol backbone network transmission through a single protocol Backbone Network In the figure, Group1 and Group2 are the networks running Novell IPX, and Term1 and Term2 are the networks running IP addresses. Tunne

GRE Words RevengeTime limit:20000/10000 MS (java/others) Memory limit:327680/327680 K (java/others)Total submission (s): 1570 Accepted Submission (s): 352Problem Description now Coach Pang are preparing for the graduate Record examinations as George do in 2011. At each day, Coach Pang can: 　　 "+w": Learn a Word w 　　 "? P": read a paragraph p, and count the number of learnt words. Formally speaking, count the number of substrings of P which is a lear

Experiment topological diagram 1. Experiment Description: The router site1 and Site2 respectively simulate the company's two sites, 1.1.1.0/24 and 2.2.2.0/24 simulate the internal network of two sites respectively; Router ISP simulation service router. A point-to-point GRE tunnel is established between Site1 and site2 through GER technology, and OSPF is run on the GRE tunnel to learn about each other's

Article Title: dummies, Ubuntu in VMware. 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. 0. Prerequisites What is Ubuntu. If you do not understand this, the content of this article does not seem to be relevant to you, please ignore it. In addition, VMware's virtual graphics card does not support 3D graphics accele

Unlimited classification-dummies public function getlist($pid = 0, $result=array(), $spac = 0){ $spac += 2; $list = M('liuyan')->where('pid='.$pid)->select(); foreach($list as $val){ $val['content'] = str_repeat('',$spac).$val['content']; $result[] = $val; $this->getlist($val['id'], $result, $spac); } return $result;} function genTree($items,$id='id',$pid='pid',$son = 'children'){ $tree = array(); // Formatted

The db2 Tutorial we are reading is: DB2 common dummies 1000 (1 ). When applying DB2, you may encounter some seemingly simple problems, especially for beginners.To sum up, I will release it to you. I hope it will be helpful to you. At the same time, you are welcome to discuss, develop, and make progress together! The characters below are mainly in lower case based on DB27.X.This article does not need to be viewed by DB2 experts.1. What are the levels o

The db2 Tutorial we are reading is: DB2 common dummies: 1000 (3 ). When applying DB2, you may encounter some seemingly simple problems, especially for beginners.To sum up, I will release it to you. I hope it will be helpful to you. At the same time, you are welcome to discuss, develop, and make progress together!The characters below are mainly in lower case based on DB27.X.This article does not need to be viewed by DB2 experts.　　All characters are in

The db2 Tutorial we are reading is: DB2 common dummies: 1000 (2 ). When applying DB2, you may encounter some seemingly simple problems. For Beginners, I would like to briefly summarize them and publish them to you, hoping to help you, we also welcome everyone to discuss, develop together, and make progress together!The characters below are mainly in lower case based on DB27.X.This article does not need to be viewed by DB2 experts.All characters are in

The db2 Tutorial we are reading is: DB2 common dummies 1000 question (5 ). When applying DB2, you may encounter some seemingly simple problems. For Beginners, I would like to briefly summarize them and publish them to you, hoping to help you, we also welcome everyone to discuss, develop together, and make progress together!The characters below are mainly in lower case based on DB27.X.　　This article does not need to be viewed by DB2 experts.　　DB2 Funct

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ORACLE common dummies: Question 1000 (one) Author: CCBZZP When you use ORACLE, you may encounter many seemingly unexpected problems. specifically for new users, today I will simply sum up it, I hope it will help you! Explore with everyone and make progress together! For ORACLE experts, it is not worth looking. 1. What is the initial password after Oracle Security is complete? Internal/oracle Sys/change_on_install System/manager Scott/tiger Sysman/oem

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