How to do the project of computer remote company in foreign Internet?

The external network is also called wide area network , It is a remote network connecting LANs in different regions . Intranet is also called LAN , It is a computer group interconnected by multiple computers in a certain area . Generally speaking , Because the intranet IP Only the internal LAN can be accessed and connected , But the external network cannot recognize the internal network IP, Can't go directly through the intranet IP Access the intranet server .

How to realize the project of accessing intranet server and host from external network ？ Here is an intranet IP Port mapping scheme to the Internet ： Quickly resolve the port mapping . No matter what network environment , As long as you can surf the Internet , You can apply any local server and project through fast parsing IP The port provides access to the Internet connection .

 
1. Define intranet access . Whether it's remote server management , Or access the project application on the server , First, make sure that you can normally access your target application in the LAN , Specify the intranet used IP And Intranet port number .  There are usually two ways to access the intranet from the external network , One is to connect and access project applications on the server, such as web Website or FTP File sharing or other applications , The other is to need remote access server . Remote access server management is generally through remote desktop connection （windows host ） or SSH Tool remote （Linux The server ）.

2. Add intranet mapping . On the intranet server , Or on another host in the LAN , Install and log in to quick resolve add port mapping . Here, you can directly set the application's intranet address to the Internet address in one step .

Application port （ Common server ports ）：WEB The server （ Web server ）：80 port ;FTP The server （ File server ）：21 port ; Terminal Server ：3389 port ; Mail server ：25 port （SMTP） and 110 port （POP）;VPN The server ：1723 port ;3. The information related to mapping and filling in are ：

Public port type ： Choose according to your own application needs .

Intranet address ： Intranet access to fixed address . It can be a fixed intranet IP Or computer name . If the mapping is used locally on the server , It is recommended to fill in 127.0.0.1 Format .

4. Achieve Internet domain name access . After the domain name resolution takes effect, the intranet mapping takes effect quickly , That is, you can surf the Internet in any environment , Through the domain name and Internet port visit .

As long as there is local networking , Access to the Internet , That is, you can quickly resolve the port mapping settings , Connect the local server to the intranet IP The port is mapped to its own domain name or automatically generated free custom secondary domain name , Provide Internet access through domain name .

Visit intranet servers and travel outside the computer remote company project access scenarios , It's a common thing for us , Can be achieved by fast parsing mapping . The above is the introduction of the method of accessing the project application on the intranet server and host from the external network , The implementation method is not complicated . Such as setting up servers locally , The intranet releases the Internet , External network access, LAN and other cross network interconnection requirements , Can be achieved by fast parsing port mapping , Make the intranet public .

As a remote connection artifact , Resolve quickly. There is no public network IP Or dynamic public network IP Under various circumstances, there are various external network access problems . Such as LAN OA/ERP/CRM、NAS Private cloud 、 Video surveillance 、 Remote development test 、FTP/SVN/MAC/ Game server 、Windows Remote desktop 、 Website 、 Blog 、 Industry 4.0 And other applications or devices . Simple 、 Efficient 、 Stable , And support PC、 mobile phone APP Remote management , Save the mind and save labour ！