Aspect: ① What is VPN?
② how to use SoftEther to build computers on the Internet into a LAN?
③ The company has blocked QQ, how can I use it secretly? Intranet BT download is too slow, how to make its speed fly? ......
Break through the blockade and end the proxy
-Softether uses the raiders
Softer in Beijing
When you download movies with the BT tool which is known for its amazing speed, you only get a speed of 1kb/s. When you want to set up an FTP server, you give up because there is no public IP. When you want to fight CS with your friends in the distance, you are frustrated because the network is blocked. Computers in the intranet, because there is no public IP, will be subject to insurmountable restrictions when using the above P2P and related software. However, the birth of a free software called SoftEther brought us a little new idea. From then on, the intranet problem became history, and the gully suddenly became a thoroughfare!
first, what are the super functions of SoftEther?
as we all know, as long as we buy a network card, HUB and network cable, we can connect several computers into a LAN. SoftEther can realize the function of VPN by virtualizing a network card on any computer and a HUB on any computer with a public IP, and can build any number of computers on the Internet (one of which must have a public IP) into a virtual local area network, which has the same function as a real local area network.
you may ask, what are the benefits of virtual LAN? This depends on the operating mechanism of the network. If there are no special restrictions on the intranet server, the intranet computer can freely access the external network, while the external network computer must be authorized by the intranet server if it wants to access the intranet computer. After a virtual local area network, the external network computer can freely access the internal network computer and realize direct communication. (See Figure 1) (Figure 8wsof1)
Tip:
What is VPN?
VPN(Virtual Private Network) means "virtual private network". For a simple example, when one department of a company is in Beijing and the other department is in Shanghai, it is necessary to use VPN technology to connect the computers of these two departments as if they were in the same LAN. In general, VPN is realized by hardware devices such as routers, while SoftEther uses software to realize VPN technology, which makes it possible for computers in the internal network and computers in the external network to form a LAN.
second, who is SoftEther useful to?
SoftEther is not suitable for all situations, but it is more useful for these kinds of people:
1. For all users who are in the intranet, if you want to make better use of services such as file transfer, voice and video, FTP setup and P2P download (such as BT).
2. For users who want to break through the restrictions of local area network servers, such as the server blocking QQ, MSN Messenger or other network services.
3. For users who want to develop multi-computer interaction, for example, you want to access files in the company's computers at home, you want to connect computers in the intranet remotely, and you want to play CS with friends in different networks.
4. other Internet services that cannot be realized due to intranet problems.
Tip:
How can I tell if a computer is in the intranet?
enter CMD in "Start → Run" and then enter "ipconfig" command to check the IP address of this machine. If it is a reserved IP such as "1.XX.XX.XXX" or "192.168.XX.XXX", this machine is in the intranet, such as computers in most companies, users in residential broadband, computers in the home LAN accessing the Internet by proxy servers, etc.
Third, it helps you to play SoftEther
SoftEther small file:
Software version: v 1. Software size: 223 KB
Software properties: * * * Enjoy the software running platform: Windows 2/NT/XP/23
Download address. net: 8181/.
analysis in front of the station: because the external network users (computers using ADSL at home) can't directly access the machines (corporate computers) in the intranet, we can use SoftEther to connect the computers at home with the computers in the corporate intranet into a virtual local area network, so as to achieve the goal.
Practical steps:
Step1: Download and install SoftEther on your home computer, and pay attention to "English" when installing, otherwise you will have to chew Japanese. When the pop-up dialog box lets you choose the language again, you should also choose "English". Finally, you should be prompted to install "Softether Virtual LAN Card Component" and "Softether Virtual HUB Component" (Figure 2) (Figure 8wsof2), and restart the computer after installation.
Step2: Running SoftEther Connection Manager on the desktop opens a HUB management screen (Figure 3) (Figure 8wsof3), where we can see that there is already a virtual HUB named "softether.com Sample HUB". We can use this virtual HUB to set up a local area network, or we can create a virtual HUB ourselves. For simplicity, we can use this default virtual hub and double-click it to connect.
Tip:
All users who install SoftEther have the possibility to connect to this default virtual HUB, so if you use it, you will already be in the same LAN with hundreds of users. I suggest you turn off all * * * users when you are not using it, and set the password of the administrator account to be more complicated to prevent intrusion from other users in the virtual LAN.
Step3: after the connection is successful, you will find that there will be an additional SoftEther Virtual LAN Connection (Figure 4) (Figure 8wsof4) in the "Network and Dial-up Connection" of this machine, which is SoftEther's virtual network card. Like a real network card, it can set IP, DNS and DHCP to automatically obtain IP, and the setting method is the same as that of a real network card. Here we can use the default settings.
Step4: do the same three-step settings on the computer you use in the company, and set the file or drive letter to * * * to * *.
Step5: when we want to access the company's computer in ADSL at home, we can use two methods:
Method 1: Open the resource manager in the home computer, click the "Search" button, select "Computer on the Network", enter the computer name of the company's machine, and after finding the computer, we can browse and access the files in the * * * sharing directory.
method 2: suppose the virtual network card address of the company machine is "1.1.151.233" (this address can be obtained by running the ipconfig command in the company machine), and drive C has been set to * * * to enjoy the disk, and enter "\ 1.1.151.233" in the "Start → Run" of the home computer.
actual combat 2: the company has banned the use of QQ. Is there any way to use QQ secretly?
pre-war analysis: at present, the company's blockade of QQ mainly adopts the method of blocking QQ servers, that is, all known QQ servers are blocked in Socks and Http proxy respectively. If we want to use QQ, we can only bypass the restrictions of the company server. We can use SoftEther's virtual HUB in home computers (home computers must have public IP, such as ADSL users), virtual network cards in the company, and servers through home computers to achieve the purpose of using QQ or other blocked network services.
Practical steps:
1. Configuration of home computers:
Step1: After installing SoftEther on home computers, run the Softether Virtual HUB Administration program in the start menu, check "This Computer(localhost)" in the pop-up dialog box, and click "CONNECT" to enter the hub configuration interface.
Step2: firstly, set a password for the virtual HUB, and then you will be prompted to set various parameters in the window. First, enter "1" (User Administration) and then enter "2" (Create User), where you can set the user name and password, and then give the virtual HUB a name after confirmation. The rest of the settings will be kept by default, and the virtual HUB will be created by entering all the way. (see figure 5) (figure 8wsof5)
Step3: after the virtual HUB is created, we will connect this computer to this HUB, start the Softether Connection Manager, run the "Account→New Account" command in turn, and give the connection a Name in the "name" column. Select "Direct TCP/IP Connection" in the "Protocol to Connect to the Virtual Hub" column, click the "Configure" button, and a dialog box will appear. Enter the local IP Address in the "Address" column, just keep the default "7777" in the "Port" column, and click "OK" after setting. (See Figure 6) (Figure 8wsof6) The software will pop up a window, and fill in the User Name and Password just set for the virtual HUB in the "User Name" and "Password" columns respectively. After setting, a new virtual HUB icon will appear in SoftEther's main window. Double-click the icon, and the system tray area will have a prompt of successful connection and connection speed after successful connection. (Figure 7) (Figure 8wsof7)
Step4: Next, set the TCP/IP of the virtual network card (SoftEther Virtual LAN Connection). Just like the real network card, we set its IP address to "192.168..1" and the subnet mask to "255.255.". (see fig. 8) (fig. 8wsof8)
2. Configuration of company computer:
Step1: Install and run SoftEther on company computer, run the "Account→New Account" command, and select "Proxy Connection" in the "protocol to connect to the virtual hub" column. Click the "Configure" button, set the Address and Port number of the proxy server in the pop-up window (if the proxy server needs to be verified, you need to enter the user name and password), fill in the IP address of the home computer in the "Address" column below, and keep the default "443" in the "Port" column. Finally, enter the user name and password of the virtual HUB in the authentication dialog box. After setting, click the newly established connection icon to connect to the home virtual HUB.
Tip:
★ Use the proxy server settings in IE for the address and port number of the proxy server, or ask the administrator.
Step2: configure the TCP/IP information of the virtual network card. Set the IP address to "192.168..2" and the subnet mask to "255.255.255.".
3. Use QQ and other network services on the company's computer
Through the above steps, we have connected the company's computer and the home computer into a local area network. Just like the real local area network, we can use the home computer as a proxy server, and the company's computer accesses the Internet through the home computer, thus bypassing the company's restrictions on the network. The steps are as follows:
Step1: First, install a proxy server software on the computer at home. If it is Windows XP, you can also use its own "Network Installation Wizard".
Step2: set the gateway address of the virtual network card to "192.168..1" at home in the company's computer. (see figure 9) (figure 8wsof9)
after setting up, we can directly use QQ or all other network services restricted by the company's network, for example, we can play online games with any friends, all of which are the same as those in the local area network.
actual combat 3: I use Great Wall Broadband (intranet user), and I want to set up an FTP server. How can I do this? BT download speed is too slow, how to make it faster?
Pre-war analysis: It has been suggested on the Internet that the method of port mapping can realize the communication between the internal network and the external network, but the port mapping needs to change the server settings, and this method obviously doesn't work for the network access in residential broadband with the same length and width. In addition, most companies access the Internet through several layers of proxy servers and firewalls. Port mapping can only solve the problem of one layer of proxy servers, and this method will not work. We can use SoftEther to make a virtual network card in the intranet, find a computer with public IP to make a virtual HUB, connect these two machines into a local area network, and then cooperate with port mapping to achieve the goal.
set up FTP server (set up with Serv-U):
1. First, install and run SoftEther on the computer at home according to the method introduced in actual combat II, find a computer with public network IP (you can ask a friend who uses ADSL to help) to install and run SoftEther, establish a virtual HUB, connect two computers into a local area network, and install proxy server software on a friend's computer to enable our computer at home to