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
, pay attention to the network conditions between two encrypted tunnels. If there is a high latency or a large number of packet loss, select TCP as the underlying protocol, due to the absence of connection and retransmission mechanisms, UDP protocol is inefficient because it requires the upper-layer protocol to be retransmitted. OpenVPN is a pure application-layer VPN protocol based on SSL encryption. It is a type of ssl
/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
use a ticket, or click your own advertisement to cheat, you must know the usefulness of IP address replacement, because an IP address can only vote for one vote a day, if an IP address is found to be cheating or even blocked after multiple clicks on an advertisement, the IP address is far from our requirement. If we have a multi-server VPN, we can switch the IP address at will, vote multiple times, and click the advertisement multiple times. Naturall
Application Introduction
L2TP VPN PC to site mode can provide terminal access to the security tunnel of the Headquarters network. If you are on a business trip, you can connect to the Internet, use the terminal's own VPN client dial-up connection, and establish a secure tunnel for data transmission.
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 certificate. VPN clients need access need to download t
Add the L2TP account in VPN >> L2TP, as set below:
Number of sessions: This account allows the maximum number of users to access.
Step Fifth, add NAPT rules
In transport control >> NAT settings >> napt, add the napt rule of the L2TP address pool to ensure that the
configured, the system prompts: the VPN connection is disconnected and the VPN service is stopped. Tail-f/var/log/syslog found the following error:
g_dbus_method_invocation_take_error: assertion 'error != NULL' failed
Solution:
$ sudo systemctl stop strongswan $ sudo ike-scan vpn.xxx.cn
Vpn.xxx.cn is your gateway address. View the output result, find the values of the Enc, Hash, and Group fields, and fil
connection, to tunnel guest ss the Internet to a VPN device on the PPTP server. the second connection requires the first connection because the tunnel between the VPN devices is establishedUsing the modem and PPP connection to the Internet.
The exception to this two-connection requirement is using PPTP to create a virtual private network between computers physically connected to the Private Enterprise Net
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. xxx with the actual Internet fixed IP address of your host. Others do not move.
Config setup
Protostack = netkey
Dumpdir =/var/
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 server
Use Winbox to login he
[OK] Pluto listening for NAT-T on udp 4500 [OK] Two or more interfaces found, checking IP forwarding [OK] Checking NAT and MASQUERADEing Checking for 'IP' command [OK] Checking for 'iptable' command [OK] Opportunistic Encryption Support [DISABLED]
In this way, the VPN configuration is successful. Next, you can log on with the two created users, ueer1 and user2. Select L2TP for logon ~~ Hey ~~ Now, the conf
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
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
When Mac OSX has no shared key, it takes some time to connect to a VPN based on L2TP to replace Mac Pro. Today, you need to configure the VPN (based on the IPSec protocol of L2TP ), an error occurred while clicking "IPSec shared key" after the previous windows configuration was installed based on the Huludao image wate
The L2TP tunnel (L2TP tunnel) refers to the logical link between the second-tier Tunneling Protocol (L2TP) endpoints: LAC (L2TP access aggregator) and LNS (L2TP network server). When LNS is a server, LAC is the initiator of the tunnel and waits for the new tunnel. Once a tun
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 IP
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.