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I. Overview:I received A friend's question in my blog. After phone communication, I learned the approximate situation:. the headquarters has a leased line to partner B. the partner side is not convenient to add a back-to-point route. When the Headquarters accesses the partner, PATC is implemented. now, if you want to connect the branch L2L VPN to the headquarters and PAT to the partner, the traffic from the branch to the partner is routed to the loopb

Igp-Summary: an advanced distance vector routing protocol, which features both distance vector and link status routing protocols. China site, applletalk and other network layer protocols. VPN is an efficient routing protocol. It has the following features: 1. control layer: Different igp protocols, small AD (AD can be used to manage the distance and the advertised distance of VPN, this refers to the Managem

The old version of the VPN system GETSHELL of wangshen (also affects multiple VPN manufacturers' devices, such as Wangyu Shenzhou, tianrongxin, Xi'an wangying, weishitong, Geda zhengyuan, American concave and convex, and ANIX in Germany) In the/admin/system/backup_action.php file if (isset($_REQUEST['cmd']))$cmd = $_REQUEST['cmd'];else$cmd = "NULL";$with_cert = 1;$pass = "";include_once "management/system.p

1. The following is an example of an Android phone, we click "Settings" to enter, as shown in the following figure. 2. There is a more or more network connection in the Setup interface, which has the following interface 3. After this enter the interface, we click on "VPN" to open the new interface click "+" increase, as shown in the following figure. 4. Then we enter the domain name of the Outland, such as image encryption 5. Now back to t

Now there are still a lot of VPN Router applications, and the market demand is also very high, so I studied the VPN Router's questions about VPN multi-channel bundling, here I will share with you, I hope it will be useful to you. VPN (Virtual Private Network) technology is of great help and considerable economic signif

Run the route command to view all the routes. Route The result is roughly as follows: Kernel IP route table destination gateway subnet mask mark hop reference using interface default 192.168.8.1 0.0.0.0 UG 0 0 255.192.168.8.1 255.255.255.255 UGH 0 0 0 wlan0110.185.76.107 192.168.8.1 255.255.255.255 UGH 0 0 wlan0link-local * 255.255.255.0.0 U 1000 0 0 0 wlan0192.168.0.40 * 255.255.255.255 UH 0 0 0 ppp0192.168.8.0 * 255.255.255.0 U 2 0 0 wlan0 Configure all traffic to go through the

bandwidth of normal users from the VPN bandwidth to reduce the impact on the VPN connection. In this case, You Can skillfully set the VPN bandwidth to a specific WAN end, and other applications are set to other ports to ensure that the VPN bandwidth is not affected. This situation is especially required for the

can continue to add it. Here, it is handled by non-China Netcom or China Telecom, I have prepared a batch processing file. When using this file, you only need to replace the Netcom gateway and the telecom gateway with the gateway of your server. If you clear all VPN route tables, you can use the route-f command. Note: Use this command with caution on a remote server. Connect to the VPN Server from the clie

wizard window, click Next, and then in the Network Connection Type window, click the second item, "Connect to my workplace network," and proceed to the next step by selecting the second item in the Network Connection window shown in the following figure. Virtual private network connection, and then name the next point for this connection. Step two: In the VPN server Selection window, waiting for us to enter the

After Ubuntu is installed, the goal is to abolish windows. Of course, everyone knows that this is impossible. At least Visual Studio cannot get rid of it. But it is my goal not to use windows to the maximum extent. In order to achieve the above goal, a large principle has been developed: If you can use Ubuntu, you don't need windows. If you can't, you can use windows in the office. In this way, a problem occurs. How can I use the office computer at home? The Organization provides a Cisco

database user (several users created by yourself) or LDAP information (for example, your active directory user) Click Next Create a new policy and name it (for example, AnyConnect). Then click Next Click New to create an address pool for the user. Do not use the same subnet as the Intranet. For example, if the Intranet uses 192.168.100.0/24, the VPN address pool can use 192.168.104.0/24. If you only want 20 IP addresses in the address pool, you can s

packet package for network transmission.MSS is the maximum value for data transmission over the network.The value of MSs header data is MTU.To put it simply, take the TCP package as an example.If the message transmits 1400 bytes of data, then MSS is 1400, plus 20 bytes of IP header and 20 bytes of TCP Header, then MTU is 1400 + 20 + 20.Of course, some headers need to be added to other protocols during transmission. In short, MTU is the total size of the final sent packets. MSS is the data size

. Note: The IP of the VPN server is to fill in the globally unique unicast address, that is, the eth0 address of the gateway server. 4. Enable VPN service Before enabling VPN, verify that the kernel's IP forwarding function is turned on, and then execute Command # Service PPTPD start to enable VPN waiting for remote

With the development of network communication technology and the emergence of network applications, more and more user data and enterprise information are transmitted over the Internet. As a result, more and more hackers and cyber threats are emerging. they steal, tamper with, and destroy confidential and sensitive data to achieve their ulterior motives. Therefore, with the development of network communication technology and the emergence of network applications, more and more user data and ente

VPN (Virtual Private Network) is an extension of a Private Network. It can simulate a point-to-point Private connection through a shared Internet or public Network connection, send data between a local computer and a remote computer. It has good confidentiality and is not subject to authorization, so that both parties can establish a free and secure point-to-point connection.There are two common VPN service

Kernel support for mppe. Our VPS kernel has compiled mppe and does not use mppe as the kernel module.Software Installation To install pptpd VPN, the ppp and iptables software must be installed.Command: yum install -y ppp iptables Then download the pptpd rpm package: 32 http://acelnmp.googlecode.com/files/pptpd-1.3.4-1.rhel5.1.i386.rpm64-bit http://acelnmp.googlecode.com/files/pptpd-1.3.4-1.rhel5.1.x86_64.r

displayed. VPN user management:Directly edit the/etc/ppp/chap-secrets file and add the user name and password in the same format. Http://blog.diahosting.com/linux-tutorial/pptpd/ Kernel supportPptpd VPN requires kernel support for mppe. Our VPS kernel has compiled mppe and does not use mppe as the kernel module. Software InstallationTo install pptpd VPN, the ppp

VPN has been for many years, but always because of laziness, so has not written about how to build a VPN server article, this year's interest caused by sharing a personal build VPN server process, write simple, do not shoot bricks. The use of VPN is very wide, can be described most of the network worms and technology s

office. On the contrary, switching is also feasible: users with Internet connections can automatically switch to the company's internal network when they enter the office. Automatically switch when the IP address is changed. When the IP address of an access device changes, the VPN connection may be seamlessly transferred to the new address. Automatic Switch during network disconnection and reconnection. VPN