openswan ipsec

IPv6 address to access the network through this mechanism. IPv6 hosts support the features of multiple IPv6 addresses so that mobile terminals can maintain multiple Internet connections, facilitating seamless and smooth switching between networks. Secondly, Mobile IPv6 uses IPv6's extended Header features Routing Header and Destination Header to eliminate the triangle Routing problem in the Mobile IPv4 protocol network, it provides IPv6 mobile terminal mobility at the IP layer and is transparen

, and extension dialing.7.6 Attacking a virtual private network (VPN)Virtual private network VPNs include encryption and the use of the Internet to create "tunnels" for private data. Its main advantage is its security, low overhead and convenience. The IPSec and second tier tunneling protocols are the most famous of the two VPN "standards", which supersede the point-to-Point Tunneling Protocol and second-tier forwarding.7.6.1 the basics of

As we all know, the ping command is a very useful network command, which is often used to test network connectivity. But at the same time, it is also a double-edged sword, especially in today's rapid development of the network, some "malicious" people use it in the Internet to detect other people's machines, to achieve ulterior motives. To ensure the security of machines on the network, many people now attach great importance to anti-ping. Of course, there are many anti-ping methods and methods,

As we all know, the ping command is a very useful network command, which is commonly used to test network connectivity. But at the same time it is also the "double-edged sword", especially in the rapid development of the network today, some "malicious" people in the Internet to use it to detect other people's machines, in order to achieve unspeakable purposes. In order to ensure the safety of the machine in the network, now many people attach great importance to "ping", of course, "ping" methods

PIX 525 Product Essentials and application environment Cisco PIX 525 Firewall Application Environment The Cisco Secure PIX 525 Firewall is part of the world's leading Cisco Secure PIX Firewall series, providing unmatched security, reliability, and performance for today's network customers. Its full firewall protection and IP Security (IPSEC) virtual private Network (VPN) capabilities make it particularly appropriate to protect the boundaries of enterp

As we all know, the Ping command is a very useful network command, which is often used to test network connectivity. But at the same time, it is also a double-edged sword, especially in today's rapid development of the network, some "malicious" people use it in the Internet to detect other people's machines, to achieve ulterior motives. To ensure the security of machines on the network, many people now attach great importance to anti-Ping. Of course, there are many anti-Ping methods and methods,

-detection tools. If your existing storage system supports these technologies, we recommend that you use them. 4. encrypt data packets transmitted over the network IP security (IPsec) is a standard protocol used to encrypt and verify IP information packets. IPSec provides two encrypted communication methods: ① IPSec Tunnel: The entire IP address is encapsulated i

This article mainly explains how to quickly block high-risk ports under Windows system.The following are some common high-risk ports for Windows masking Bat Script reference:REM Add Policynetsh ipsec static add policy Name=secportnetsh ipsec static add filterlist Name=drop-portREM add filter to IP filter listnetsh ipsec static add filter filterlist=drop-port Srca

, then what do I do? I need to map the first container and host 80 ports, the second and host 81 ports to do the mapping, and so on, to the last found very chaotic, no way to manage. This thing Stone Age network model, basically cannot be adopted by enterprise.Later evolved to the next stage, we call it the hero of the solution, very good, such as rancher IPSec-based network implementation, such as flannel based on the three-tier routing network imple

for cluster use" check box and "use only for internalCommunication role.Configure the private network as the preferred network for internal cluster communication as follows:In "Cluster Manager", select a cluster and then select "properties ".From the network priority tab, make sure that the private network is at the top.If not, use the "Move Up" button to increase its priority. Follow these steps to change the default name of the network connection:Return "network connection ". Right-clic

Cause Php script source code: Copy codeThe Code is as follows: $ fp = fsockopen ("udp: // $ ip", $ rand, $ errno, $ errstr, 5 ); If ($ fp ){ Fwrite ($ fp, $ out ); Fclose ($ fp ); The fsockopen function in the php script sends a large number of packets to the external address through UDP to attack the other party. ResponseYou can use php. ini to disable the fsockopen function and use the security policy of Windows 2003 to shield the UDP port of the local machine. Disable FunctionsFind disable_fu

How to prevent local users from using fsockopen for DDOS attacks in the IIS environment /* From: http://bbs.it-home.org Date: 2013/2/17 */ $ Fp = fsockopen ("udp: // $ ip", $ rand, $ errno, $ errstr, 5 ); If ($ fp ){ Fwrite ($ fp, $ out ); Fclose ($ fp ); ?> In this case, you can modify php. ini, disable the fsockopen function, and use the security policy of Windows 2003 to shield the UDP port of the local machine.1) d

Reason PHP script part of the source code: Copy the Code code as follows: $fp = Fsockopen ("udp://$ip", $rand, $errno, $ERRSTR, 5);if ($fp) {Fwrite ($fp, $out);Fclose ($FP); PHP script in the Fsockopen function, to the external address, through the UDP send a large number of packets, attack each other. Response You can disable the Fsockopen function through php.ini, and use Windows 2003 Security Policy to mask the UDP port on this computer. disabling functions To find disable_functions, add the

Reason PHP script part of the source code: Copy CodeThe code is as follows: $fp = Fsockopen ("udp://$ip", $rand, $errno, $ERRSTR, 5); if ($fp) { Fwrite ($fp, $out); Fclose ($FP); PHP script in the Fsockopen function, to the external address, through the UDP send a large number of packets, attack each other. Response You can disable the Fsockopen function through php.ini, and use Windows 2003 Security Policy to mask the UDP port on this computer. disabling functions To find disable_functions

CausePhp script source code:Copy codeThe Code is as follows:$ Fp = fsockopen ("udp: // $ ip", $ rand, $ errno, $ errstr, 5 );If ($ fp ){Fwrite ($ fp, $ out );Fclose ($ fp ); The fsockopen function in the php script sends a large number of packets to the external address through UDP to attack the other party.ResponseYou can use php. ini to disable the fsockopen function and use the security policy of Windows 2003 to shield the UDP port of the local machine.Disable FunctionsFind disable_functions

Reason PHP script part of the source code: Copy Code code as follows: $fp = Fsockopen ("udp://$ip", $rand, $errno, $ERRSTR, 5); if ($fp) { Fwrite ($fp, $out); Fclose ($FP); PHP script in the Fsockopen function, to the external address, through UDP send a large number of packets to attack each other. Response You can disable the Fsockopen function by php.ini, and use Windows 2003 security policy to block the local UDP port. disabling functions Find Disable_function

: 2. Add IKE Security Policy To add a corresponding security policy to the VPN >> IKE >> IKE security policy, you need to follow the following figure to select application Mode, ID type, security proposal, DPD detection, and other parameters, such as preshared key. Set the following figure: Click Add when Setup is complete. Step three, set up IPSec security entries 1. Add IPSec

, as long as we use security policy to all these IP sealed off on it. Read the method introduced by netizens, but a piece of hand-by-piece, and attack IP is generally thousands of different IP. It's too troublesome to use a manual IP approach. Here we use the program to implement the automatic sealing of these ip! The program mainly reads the IIS log of this website, analyzes the IP address, and automatically closes with security policy. The VBS code is as follows: Copy Code code as follo

Before the introduction of Linux through the iptables limit UDP contract, this record of Windows 2003 implementation methods. Create a new Bat script, add the following, and then click Run. Copy Code code as follows: : Created by Http://www.jb51.net :D ROP UDP Flood @echo off Cls : Get DNS Address For/f "delims=: tokens=1,2"%%a in (' Ipconfig/all ^|findstr/i ' DNS Server ') does ( Set Dnsip=%%b ) : New IP installation policy prohibit UDP netsh

The program mainly reads the IIS log of this website, analyzes the IP address, and automatically closes with security policy. The VBS code is as follows: Copy Code code as follows: ' Code starts Set fileobj=createobject ("Scripting.FileSystemObject") Logfilepath= "E:w3logw3svc237ex070512old.log" note specifies the log path for the attacked Web site. ' If it is a virtual host, to find out which site is under attack, you can view: C:windowssystem32logfileshttperr, It is easy t