linux ipsec vpn

Set up IPSec VPN in CentOS 6.31. install required Libraries CentOS:1yum update2yum install pam-devel openssl-devel make gcc 2. Download strongswan and decompress it (* indicates the current Strongswan version number)1 wget http://download.strongswan.org/strongswan.tar.gz2tar xzf strongswan.tar.gz3cd strongswan -* 3. Compile Strongswan:Xen and KVM use the following parameters:1./configure -- enable-eap-ident

Install l2tp/ipsec vpn in Centos 71. install the software package required by l2tp ipsec Yum install epel-release Yum install openswan xl2tpd ppp lsof 2. Set ipsec 2.1 edit/etc/ipsec. conf Vi/etc/ipsec. confReplace xx. x

address 10.1.1.1 ! Crypto ipsec transform-set r3_to_r1 esp-aes Mode transport ! Crypto map R3 100 ipsec-isakmp Set peer 10.1.1.1 Set transform-set r3_to_r1 Match address 100 Interface Loopback1 Ip address 192.168.0.3 255.255.255.0 ! Interface FastEthernet0/0 ! Interface FastEthernet0/1 No switchport Ip address 255.2.2.1 255.255.255.252 Crypto map R3 Ip route 0.0.0.0 0.0.0.0 255.2.2.2 ! ! Access-list 100 pe

Dialer0, using the user name and password assigned by the ISP for dialing and PPP authentication related configuration,and configure MTU. [Routerb]interface Dialer 0[Routerb-dialer0]link-protocol PPP uses PPP dialing[routerb-dialer0]ppp pap local-user Test password simple 123456 dial-up ISP provides user name and password[Routerb-dialer0]ip Address Ppp-negotiate[Routerb-dialer0]dialer User 1 users[Routerb-dialer0]dialer-group 1 user Group[Routerb-dialer0]dialer Bundle 1[routerb-dialer0]ipsecno-

protocol. [Routerb-ipsec-proposal-tran1]transform ESP# Select the algorithm. [Routerb-ipsec-proposal-tran1]esp encryption-algorithm des validation algorithm[Routerb-ipsec-proposal-tran1]esp authentication-algorithm SHA1 encryption algorithm[Routerb-ipsec-proposal-tran1]quit# Configure the IKE peer. [Routerb]ike Peer P

The concept of things here no longer repeat, there are too many online, a key installation script also has a lot, but many can not be used, can be used only in the CentOS6 under the use, CentOS7 basically did not see these installation scripts. Then spent some time to toss the test, write this script to facilitate the VPN after the installation of a key to build. The open source package is Openswan and xl2tpd, and there are many problems in the middle

Lab requirements: 1. Build an environment based on the topology. The business trip staff use a real PC to bridge a router and connect to the ISP;2. Traveling staff can access VLAN2 on the Headquarters Intranet through PPTP and access the WEB server on the ISP;3. A IPSEC-VPN is required between the departments of the total score to securely transmit the traffic through the ISP, among which VLAN3 to VLAN4 req

reference access control List 3101. [Routerb-ipsec-policy-isakmp-policy-10]security ACL 3101# Configure security Policy to reference IPSEC security proposal prop. [ROUTERB-IPSEC-POLICY-ISAKMP-POLICY-10] Proposal prop[Routerb-ipsec-policy-isakmp-policy-10]quit# Enter the serial serial2/0 and configure the interface to

H3C MSR 3016 and Cisco 5510 ipsec vpn connection preface: Book connected to the http://www.bkjia.com/net/201210/162034.html, a previous branch of a VPN (cisco5510) device is damaged, temporary find a backup VPN (H3C Msr3016 ), after the system is refreshed, set ipsec

specific IP address ESP, the source and destination IP addresses in the transmission mode are not encrypted. Therefore, the transmission mode tunnel is used as an example.Environment topology:PC1 VPN1 =========== VPN2 PC2184.0.0.2 184.0.0.1 (eth1)/192.168.95.164 (eth0) 192.168.95.195 (eth0)/185.0.0.1 (eth1) 185.0.0.2The ICMP ping packet is sent from PC1 to PC2. The tcpdump packet capture on VPN1 is as follows./Tos/bin/ipsec-cmds # tcpdump-ni any host

order number of IPSec security policies for both devices. 10.IPSEC security Policy applied on the wrong interface Execute commands on ngfw_a and ngfw_b on the display IPSec policy [brief | name Policy-name [seq-number | extend-acl]] to see if IPSec security policy is applied on the correct interface.

The 1,ipsec VPN application is more and more extensive, the following configuration instance is to the single headquarters multiple branch organization actual application According to the configuration of this article, we can achieve the maximum VPN connectivity through the minimum number of VPN tunnels, the network t

IPSec (IP Security) is the most common protocol used to implement VPN functionality. VPN can be realized by the corresponding tunneling technology. There are two modes of IPSec: Tunnel mode and transport mode. IPSec is not a separate protocol, it gives a set of architecture

Experiment content of Dynamic IPsec VPN in a star network: 1. Create a fully interconnected topology. 2. Take R1 as the center, so that R2 and R3 establish a neighbor relationship with R1 respectively, while the routes between R2 and R3 are not reachable. 3. Create a Dynamic IPsec VPN R1 # show run !! Crypto isakmp pol

IPSec security policies for both devices. 10.IPSEC security Policy applied on the wrong interface Execute commands on ngfw_a and ngfw_b on the display IPSec policy [brief | name Policy-name [seq-number | extend-acl]] to see if IPSec security policy is applied on the correct interface. 11.SA Timeout

Many people ask me how to implement IPSec VPN technology, and I've done a case to show you how to configure a router-based IPSec VPN. Due to work needs, the company's Nanjing office and the Shanghai office to establish a VPN connection. Nanjing Office Network settings: Intr

Many people asked me how to implement the IPSec VPN Technology Based on the router. I used this case to explain how to configure an IPSec VPN based on the router. Due to work requirements, it is required to establish a VPN connection between the company's Nanjing office and

Application introductionIPSec VPN can be used to establish a secure tunnel between two sites and is often used for network interconnection between enterprise headquarters and branches. This paper takes a company in Beijing headquarters and Guangzhou Branch need to build a security tunnel for example, introduces the use of TL-ER7520G to build IPSec VPN settings.No

Application Introduction IPSec VPN can be used to establish a secure tunnel between two sites, often used for network docking of Enterprise Headquarters and branch offices. This paper takes a company Beijing headquarters and Guangzhou branch need to build a safe tunnel as an example, introduce the setting method of using WVR series Enterprise wireless router to build

I. Overview:IPSec VPN has a variety of methods through NAT, NAT-T is one of them. Generally, IPSec VPN cannot cross the NAT device because the ESP traffic does not have a port number as the TCP or UDP traffic does. When the first phase of the test of IPSec VPN is aggressive-