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 topology is as follows:
As shown above, the
I have a lot of friends because the working relationship is often mobile office, so the transfer of information, and the company information in a timely manner or tired to open a company or home computer to see movies and so on application appears very headache. This application means secure network communication over the Internet, sharing resources. and want to achieve this kind of demand, actually already had the best way to--vpn.
A
, and easy to scale
Disadvantage: Large delay
Devices that can implement a VPN:
Firewall (preferred)
Routers (Weak protection)
Host OS (Windows----Routing and Remote Access Linux----IPSec, ISA)
Here we use the host of Windows Server 2003 to implement this VPN network interconnect. This experimental environment is implemented in virtual machines, which requi
The VPN device logs syslog To the BSD server-Linux Enterprise Application-Linux server application information. The following is a detailed description. 1. Set the syslog parameters of the VPN device. I use this VPN Device of Beijing Power. Other network devices are not very different.
2. After configuring the
Ssl vpn has been a major technology since its appearance, allowing enterprises to greatly reduce their remote access fees and provide specialized transaction services through the Internet. VPN brings great commercial value. However, only when such a premise is met can this value be realized, that is, it can provide appropriate levels of protection, make sure that enterprise information is accessible only by
CCNP Study Notes 2-routing part-VPNReview the dynamic protocol: rip vpn ospf encapsulation UDP 520 IP 88 IP 89 update address 224.0.0.9 224.0.0.10 224.0.0.5/6 use passive to implement intercommunication between the two ends of unicast neighbor and the output interface to implement unicast NBMA point to multicast unicast key complete neighbor update methods, timing 30 seconds 15% offset, trigger incremental
China Unicom CDMA (WAP monthly subscription) method on the Internet.
China Unicom's "interactive vision" Traffic monthly package (that is, WAP monthly package) on the Internet method.
I. Specific methods:
1. First install the driver of the CDMA Nic.
2. Install the VPN Client software and authentication certificate.
3. Insert the UIM card into the NIC and enable the CDMA Nic.
Program .
Dialing #777
Account WAP
WAP Password
4. Enable the
Workaround:
A problem that is easy to connect to VPN under the corporate Unit network, because the VPN connection is global and can change native IP, resulting in the inability to access the internal network of the company. To solve this problem is not difficult, with the help of the modified routing table to bypass, so that access to the internal network or through the local gateway, the following describ
1 Introduction
With the enlargement of the scale of university running, the new (sub) campus spread to the wireless network construction and management put forward higher requirements. VPN technology can not only build a unified wireless network management platform, but also improve the security of wireless campus network.
2 VPN Overview
VPN (Virtual private n
that the protocol stack cannot be modified, but it cannot really let it flow out of the machine. If it leaves, it cannot be expected to encapsulate it with ssl. Where can it flow? The loopback device is a good choice. The data flowing from the loopback device actually flows into the loopback device. In user space, you only need to open the loopback device and then read it, note that the data cannot be read through general sockets. After all, the data is not sent to us. We need to
Article title: Create a VPN server on suse10. 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.
The VPN is a virtual private network. the private network can be understood as an enterprise Intranet or a LAN. why is the word "virtual" added? It refers to the establishment o
Build an ipsec/xl2tpd VPN in centos 6.5
In this article, yum is installed directly, saving you trouble.
I. Installation (a command is fixed)
Yum install openswan ppp xl2tpd
Like the source code installation of friends can go to the http://pkgs.org to download the source package.
Ii. Configuration
1. edit/etc/ipsec. conf
Vim/etc/ipsec. conf
Replace xx. xxx with the actual Internet fixed IP address of your own VPS. Others do not move.
Config setup
Nat_
Topology:
Note: The company's Intranet environment requires domain support;
The front-end two VPN servers are Linux operating systems;
A green line indicates the physical link of the network environment;
Red indicates the authentication method;
# When a user requests a VPN connection, use the domain account to log on. DNSPOD determines whether it is a China Tele
" pop-up properties. 3.3, where you select the "public interface to connect to the Internet"-"Enable NAT on this interface", click OK. 3.4, on Routing and Remote Access, right-click to select Properties 3.5, select "IPv4" in the pop-up window-"Static address pool" Click "Add" 3.6, enter "172.16.0.1" in "Start IP address" , "End IP Address" Enter "172.16.0.254" click "OK" 3.7, click "OK", now assigned to the user of the IP address segment has been configured well. When the
install-y pptp ppp pptp-setup
# Using pptpsetup for customer configuration is a good tool, of course, you can also configure it yourself# Pptpsetup -- create vpn-jiao -- server x. x -- username dog -- password passwd -- encrypt
# Manual Configuration$ Vi/etc/ppp/peers/vpn-testPty "pptp x. x -- nolaunchpppd"LockNoauthNobsdcompNodeflateName dogRemotename vpn-testI
name and password.
Windows 7 settings
The other steps are the same as the pptp vpn settings. Click the network connection icon in the lower-right corner of the desktop, right-click the Xunyang network acceleration connection, and select properties:
Change the server address to vl.vpn32.com:
In the security option box, select the VPN type: L2TP/IPSec
Click Advanced Settings. In advanced se
Run pptpd on CentOS to implement VPN ServiceBuy a cheap VPS and install the linux system. Run pptpd to implement the VPN service and use the famous iptables for nat forwarding. This looks like a professional VPN service. Then configure the user name and password, you can achieve multi-person sharing
Why is the WIN7 system VPN not connected to the Internet? Don't worry, just look at the little book. This Win7 system VPN Setup Guide ~ may be able to help you.
First: After you set up a VPN, you cannot connect to the workspace network at home (or elsewhere) through the Internet, check the items in this list:
-Make sure that the virtual private network (
packages and dependent packages above rpm-ivh
2. Configuration and use
If the installation is successful, su to the root user and run pptpconfig. php.
Note: before running the command, make sure that/usb/sbin and/sbin are in the system path. Otherwise, no ip address or pptp command error is found.
Solution:
[Root @ eadd-lyb] # export PATH = $ PATH:/usr/sbin/:/sbin/
Run:
[Root @ eadd-lyb] # pptpconfig. php
For the
Configure vpn in ubuntu to support Internet access
The company's development environment is LAN, and there is no problem in the company's internal use, but sometimes it does need to be used outside, such as at home, on a business trip, at this time you need to configure a vpn connection to the company's intranet. The vpn
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