linux ipsec vpn

1 Introduction With the rapid development of public networks such as internet and the development trend of international economic integration, there is more and more demand for the transmission of information through network between enterprises. How to guarantee the safety and efficiency of communication at the lowest cost is an issue of great concern to enterprises. The popular solution is to use tunneling technology to establish secure virtual private networks, the virtual private network (

Use G1 to establish an IPSec VPN tunnel, which is configured as an instance of this document. The first step: to build a good VPN physical connection environment Step two: Set the router ① IPSec Step three: Set the router ② IPSec Step Fourth: View Verify Connection Statu

IPSec is a relatively complete system of VPN technology, which provides a series of protocol standards. If you do not delve into the overly detailed content of IPSec, we understand IPSec in general terms as follows. VPN National standard: Standard-setting unit: Huawei Tech

md5Authentication pre-shareCrypto isakmp key tom address 200.1.1.2Crypto ipsec transform-set tim esp-3des esp-md5-hmacAccess-list 101 permit ip 192.168.1.0 0.0.255 192.168.2.0 0.0.255Crypto map tom 10 ipsec-isakmpSet peer 200.1.1.2Set transform-set timMatch address 101Interface FastEthernet0/0Ip address 192.168.1.254 255.255.255.0No shutdownInterface FastEthernet0/1Ip address 100.1.1.2 255.255.255.0No shut

Today, we will demonstrate how the Juniper SRX Firewall runs ipsec vpn + OSPF with Cisco routers. Topology: 650) this. width = 650; "src =" http://img1.51cto.com/attachment/201309/133822237.png "title =" 1.PNG" alt = "133822237.png"/> R1 simulates a cisco device, which is equivalent to a branch site. R2 simulates a carrier device, C1 is a zhuyun device, and bridging with SRX, which is equivalent to a firewa

This document describes the dynamic DNS VPN in IPSec VPN, where two fortigate devices establish a communication channel between them, allowing the servers or hosts that the FortiGate protects to access each other. One of the fortigate uses static IP while the other fortigate uses static domain names and dynamic IP. Before you configure, you need to unify

H3C MSR20 series router ipsec vpn settings H3C MSR20 series router ipsec vpn settings (the peer end is consistent except the IKE name and ACL data flow direction), local ADSL access mode, access www.2cto.com [ruby] version 5.20, Release 2207P02, basic # sysname testvpn # ike local-name testvpn ike sa keepalive-timer ti

The IPSec VPN realizes the network expansion, the firewall realizes the control and the filtering to the network traffic, therefore has the influence to the IPSec VPN communication. The default ASA maintains a state session only for UDP/TCP traffic, and therefore discards the ESP traffic that is returned. There are tw

Firewalls are often deployed on the edge of our network environment to isolate the network and protect the security of the Intranet and Internet. For example, in the edge network, MIP a public IP address to a VPN device on the Intranet, for the sake of security, EDGE networks need to have selective open ports or Protocols. MIP is as follows: 650) this. width = 650; "border =" 0 "alt =" "src =" http://www.bkjia.com/uploads/allimg/131227/0FP912P-0.jpg "

This document describes the configuration of subnet overlapping IPSec VPN for all fortigate devices. When you configure VPN interconnection, you need to use NAT for address translation if the subnets on both ends overlap but cannot change any one end of the network to allow VPN connectivity. It is not recommended to us

Graphical configuration of using cisco ipsec vpn by subway in ubuntu 13.04By default, ubuntu only provides pptp vpn connection configuration. To use a cisco ipsec vpn, you must first install vpnc. If you are not familiar with the command line, you need to solve this problem

1. Test topology: 2. Configuration: A.R1: ! Interface Configuration Interface Loopback0 IP Address 1.1.1.1 255.255.255.0 Interface fastethernet0/0 IP address 10.1.1.1 255.255.255.0 No shut ! Routing Configuration IP Route 0.0.0.0 0.0.0.0 10.1.1.10 B.site1 Firewall: ! Interface Configuration Interface GigabitEthernet0 Nameif Inside Security-level 100 IP address 10.1.1.10 255.255.255.0 No shut Interface GigabitEthernet1 Nameif Outside Security-level 0 IP address 202.100.1.1

Tags: cat dem protocol PPP span plugin send add IPSec1. Open Network Preferences2. Click +3. Enter the address and account number of the VPN4. Advanced--Tick send all traffic via VPN link5. Add DNS6. Because the corporate VPN is using the L2TP protocol and is not shared, MacOS needs some configuration to support it, otherwise it will prompt for the loss of the IPSEC