The following WLAN test is successful in ubuntu11.04:
Install L2TP IPSec VPN
We will use l2tp-ipsec-vpn software for Werner Jaeger
First, open the terminal and execute the following command to install the l2tp-ipsec-vpn Soft
and IP. l2tp can use the l2tpd. * General
# Secrets for authentication using CHAP
# Client server secret IP addresses
Username * userpass *
3.4 start xl2tp
service xl2tpd start
4. open ports and forwarding
Execute all the following commands as is
/Sbin/iptables-a input-p udp-m policy -- dir in -- pol ipsec-m udp -- dport 1701-j ACCEPT
/Sbin/i
1.L2TP the second-tier tunneling protocol is a way to access certificates. You need to install a certificate Server in the VPN server intranet, and then have the VPN server trust the certification authority, and then publish the Certificate Server and download the certificat
the L2TP or PPTPVPN tunneling technology on IPSec. The SSL protocol for www.2cto.com SSLVPN provides features such as data privacy, endpoint verification, and information integrity. The SSL protocol consists of many sub-protocols, two of which are handshake protocol and record protocol. The handshake protocol allows the server and client to confirm each other be
security gateways between the start and end points of the tunnel. A VPN can be used to provide a VPN when a tunnel is used in combination with data confidentiality.
The encapsulated data packet is transmitted within the tunnel of the network. In this example, the network is Internet. A gateway can be a perimeter gateway between an external Internet and a private network. Perimeter gateways can be routers, firewalls, proxy servers, or other security gateways. In addition, two gateways can be use
/IP-based data network to implement secure data transmission from a remote client to a dedicated Enterprise Server. PPTP supports creating on-demand, multi-protocol, and virtual private networks through public networks (such as the Internet. PPTP allows encrypted IP communication.Encapsulate the IP address header.
Ii. L2TP
Layer 2 Tunneling Protocol (L2TP) is a l
SSL: Specifies a Data Security score between the Application Protocol (HTTP, telnet, nntp, FTP) and TCP/IP.
Layer mechanism. Provides data encryption, server authentication, message integrity, and optional client authentication for TCP/IP connections.
.Difference between SSL and TLS: TLS can be seen as an upgraded version of SSL. The main difference is that the supported encryption algorithms are different.
SSH: SSH is a protocol used for secure remot
In the front I sent an article "Juniper Firewall diagram L2TP VPN Configuration", we learned from that article how to configure. But we know that the L2TP VPN is only connected to our L2TP VPN server, but it doesn't encrypt our data, and we know that IPSec's data is encrypted, and if the
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, such as compatibility between Openswan and
The simplest approach is to use a script to configure it step-by-step. I used a script written by Philplckthun, modified the way to get the server IP: the script file.Run under Ubuntu:sh setup. SHAfter the configuration configuration is complete, the server side is ready.Next the client I use Win7, but Win7 has a pit, that is, if there is a router attached, that is, behind the NAT, the default is not connec
CentOS installation l2tp+ipsec Complete tutorial L2TP compared to PPTP is another way of tunneling protocol, some networks under PPTP cannot connect, can try to L2TP, generally on the PC, the use of the experience is no different, The technical principle of the difference please refer to here. It is recommended to use
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 shared key. Please verify your settings a
1. Installing OpenswanApt-get Install Openswan2. Open the/etc/ipsec.conf file and make the following configuration:Where Virtual_privat contains the network address allowed to be configured as the subnet on which the remote client resides. In other words, These address ranges should be the addresses of the clients behind the NAT router. Settings ikelifetime and keylife are consistent with the default settings for Windows. Replace the%your_server_ip% with the IP of this
Article Title: Build an L2TP VPN Server on the Linux system. 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.
Use Linux as an L2TP VPN Server.
First install RHEL5 and then:
Make
Make
policy testnetsh ipsec static add rule name=deny_all policy=test filterlist=deny_all Filteraction=block
6, establish the server itself external access strategy
Set up a filter list server_accessnetsh ipsec static add filterlist name=server_access
Add a filter to the filter list server_access that allows any port on the local to any address, and the protocol p
Description
RouterOS Server ip:172.31.101.80
RouterOS version: RouterOS V6.15
Demand:
To configure the PPTP VPN server on the RouterOS server, the PPTP VPN Client dial-in network segment is: 172.31.101.60-
172.31.101.79
Operation Steps:
First, login RouterOS
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