TW544580B - Method using wireless-LAN NIC to establish virtual access point architecture - Google Patents

Abstract

A method that establishes virtual access point architecture (VAPA) using Wireless-LAN (WLAN) NIC is provided, in which a WLAN NIC is installed in a server of Ethernet network and other wireless clients use Ad-Hoc to build up a WLAN. The method comprises: firstly installing a DHCP server and using the DHCP method to cut class-C private IP individually, thereby allowing both of the Ethernet network and WLAN to own various IPs and the client end to acquire a dynamic IP, in which the client IP can be set as an automatic acquisition; further installing a NAT server to transfer personal IP address of client and using public IP of the server to connect to the internet; further installing a WIN server again to allow clients of two LANs to be capable of using NetBIOS name to directly access information of member of another LAN by converting IP through WIN server.

Description

544580

V. Description of the Invention 背景 Background of the Invention The present invention relates to a wireless local area network communication system, and in particular, a wireless local area network card is used to replace a wireless network access device; (wi re 1 ess-LAN Access Point) system. Know-how description For those who are familiar with network technology, you should understand the various # and wireless LAN. The following is a brief description of some nouns. A LAN (Local Area Network) is a network in which two or more computers are connected in a small area. The Internet is formed when multiple LANs are connected. The known Internet protocol (hereinafter referred to as I p) is a so-called Internet layer protocol, which conforms to the I E E E 8 2 0 3 standard through an Ethernet-type network. That is, the 'Ethernet operates in a broadcastless area (connectionless), and generally sends a message to a plurality of host modules through a bus, that is, a single cable connects each host. Each host monitors the general bus and only accepts messages generated from its own address. Figure 1 illustrates a block diagram of a conventional network connection architecture, describing the connection of a plurality of wireless local area networks (LAN) and Ethernet to the Internet (In ΐernet). These computer systems on the network interconnect various desktop computers and / or portable personal computers to share resources. Wireless LAN systems avoid providing a direct wired connection to a wide variety of desktop computers and / or portable personal computers connected to the LAN.

Page 4 544580 V. Description of the invention (2) Summary of the invention As mentioned before, the invention is based on the Ethernet server of the Windows server architecture. By providing a wireless LAN card, Form a wireless LAN with other wireless clients to coexist with Ethernet. At the same time, NAT (Network Address Trans 1 ators) is used to serve the moon and share the Internet (Interne t); through WINS (Windows Internet Naming Service) to serve the moon, two local networks Roads can access internal resources of the Internet (Intranet). An object of the present invention is to hopefully use the present invention to practically overcome one or more problems related to the conventional art. One of the phenomena of the present invention is to provide a method for establishing a virtual access device (VAPA) using a wireless LAN card, replacing a wireless network access (AP) function with a wireless LAN card. A phenomenon of the present invention is to provide a method for establishing a virtual access device (VAPA) using a wireless LAN card, which is applicable to a Windows server environment. To access and share resources, the method includes at least the following steps: (1) A wireless LAN card is installed on an Ethernet server. Other wireless clients use the Wireless-LAN Ad-Hoc method to remove the shelf.

544580 V. Description of the invention ⑶ Construct a hotline local area network (wire 丄 ess (2) set up a DHCp temple service, cry, when ΟΛ ^ each client IP is set to obtain automatically; τρ X., f 号 子 1 j Service Jie makes the client's private IP (private W address and the server's public IP (pubHc ιρ) connected to the Internet; () = Set up an HNS server so that customers of both local networks can use NetBIOS names The "transformation through the WINS server" directly accesses the data of another local network member. One phenomenon of the present invention is that the step of setting up a DHCm server further includes: dividing the private Internet protocol by DHCP to separate The "network mask" enables the Ethernet LAN and the wireless LAN to each have 1 2 5 IPs, and the client can get a dynamic! P. Among these dynamics p is private. A phenomenon of the present invention Yes, the step of setting up a DHCP server further includes: installing the WINDOWS server on a computer with three network cards inserted, setting the IP of the first Ethernet card to a legal IP, and the second The IP of the Ethernet card is set to a virtual IP, and the third wireless network IP is also set to a virtual IP. Then, connect the ADSL modem to the first network card, the second network card to the hub, and the third network card to directly act as a wireless zone Network gateway IP (Gete way IP). Furthermore, install the DHCP service on the Windows server, and assign the subnet mask of the IP to the DHCP management respectively. The IP of all client personal computers is set to obtain automatically Therefore, DNS can be set on the DNS server provided by I $ P, Geteway presets Ethernet and wireless network gateways respectively.

544580 V. Description of the invention w) One phenomenon of the present invention is that the step of setting up the W NS of the configuration DHCP further includes: installing a Wi NS server and setting the specified client W NS server information in the DHCP server. A phenomenon of the present invention further includes the steps of setting up a NATS erver: executing "Routing and Remote Access" and "Setting a Router with Network Address Translation Routing Protocol" on Windows 2000 Server to set this router at the first On a network card, Ethernet and wireless LANs can access Internet resources through the same network address translation server at the same time. The features and advantages of the present invention can be further understood from the description below, and even partly can be understood from the description or by referring to the preferred embodiments. The framework of the description, patent application scope, and drawings described in this case is intended to illustrate the scope and spirit of the present invention. The description of the preferred embodiment is detailed to achieve the features and advantages of the invention and the purpose of the invention. As an example and a breadth description, those skilled in the art will understand the general description disclosed above and the following preferred The description of the examples details both, and is considered in all respects as exemplary and not for limitation. And it is hoped that many variations can be made without departing from the application of the present invention.

544580

Fifth, the invention explains the spirit of the scope of benefits. The invention is a method for establishing a virtual access cry (VAPA) by using a green area network card. A helmet line area 5 network card is set on an Ethernet server, and other wireless customers use Ad-H. 〇c * Architecture a wireless zone ^ network. First, set up a DHCP server and cut the private IP in the DHCp mode, so that each of the Ethernet LAN and the wireless LAN has several, and the client can get a dynamic 1 P; where the client IP is set to Available automatically. DH CP is used to dynamically assign addresses (Dynamic Host Configuration Protocol: hereinafter referred to as DHCP). The DHCP server is responsible for managing and assigning addresses, and leases IP addresses from the DHCP server. The computer at the address is called a DHCP client. Once the lease expires, the address can be assigned to other computers. As described above, the NAT server is set up to redirect the client's private IP to connect to the Internet with the server's public IP. Refer to Figure 2, which illustrates the NAT translation process. NAT is the network address transfer (hereinafter referred to as NAT). A NAT router is used as an intermediary between the internal network and the external network. The NAT router is sent to the internal network. In the case of a packet, the TCP / UDP header in the packet is rewritten, and the virtual Internet Protocol (hereinafter referred to as Ip) is changed to a legal IP before being transmitted, and the same is entered from the external network.

544580 Fifth, the description of the invention (6), the packets will also be translated, and then transmitted to the corresponding internal workstation or server. ~ The mechanism of NA T can be divided into three types: one-to-one, many-to-one, and many-to-many. One-to-one is a virtual IP corresponding to a legal Z p, which is mainly used to correspond to the external service server. Figure 3 illustrates the Nat many-to-one mechanism. Because the purpose of the many-to-one mechanism is to solve the dilemma of insufficient legality, many-to-one is to map the virtual IP of the entire internal network to a legitimate IP set on the nat router. For the external network, all network service requirements come from the nat router, but actually from the entire internal network; many-to-many is also used to correspond to a large number of workstations, the purpose is to solve the problem of insufficient legal IP Then set up the WI NS server, so that the customers of the two LANs can use the NetBIOS name to convert to IP through the WINS server to directly access the data of another LAN member. WINS is the so-called ¥ 1 \ 1). Windows Internet Naming Service (hereinafter referred to as WI NS) is a system that can distinguish the IP addresses of computers on the network. This system also becomes a name resolution . WINS supports client and server computers running Windows, and can provide name resolution services to other computers. In the case of using a DHCP server to dynamically allocate IP addresses, it is very complicated to know the IP addresses of a particular computer. W I n S uses a distributed database that automatically updates computer names and their IP addresses to complete name resolution.

Page 9 544580 V. Description of the invention ⑺ Figure 4 illustrates the process of IP broadcast between workstations. The W I N S server can solve the problems that occur when the N e t B I 0S name is resolved through IP broadcast, and the network system administrator does not need to update the static corresponding file. The W I NS database can be automatically updated when a computer moving between subnets has a new IP address because W I NS can be statically addressed. Neither users nor network administrators need to worry about adapting to such name resolution. The NA T packet cannot broadcast through the router or firewall when querying the main name browser in broadcast mode. If you want to traverse the router, you must pass the wheel in a point-to-point manner, and at this time, you must specify the destination IP. It is called WI NS server. Because of the establishment of the W NS server, the mechanism that the workstations would broadcast on a regular basis was transformed into a fixed registration and inquiry with the W NS, and it was no longer broadcast. This can effectively reduce the network load. Referring to FIG. 5, an architecture diagram of the present invention is described. On an Ethernet LAN server based on a WINDOW server architecture, the present invention provides a method for forming a wireless LAN with other wireless customers by adding a wireless LAN card to coexist with the Ethernet. . At the same time, the Internet can be shared through the network address translation server; through the W I N S server, the two regional networks can access internal resources of the Internet. FIG. 6 is a flowchart of a preferred embodiment of the present invention. Referring to Figure 6,

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V. Description of the Invention 原理 The principle of implementation of the present invention. As mentioned above, the implementation principle framework of the present invention is to set up a wireless zone on an existing Ethernet server: a card, a wireless network, and other wireless clients use Ad-Hoc to build a wireless zone secret camp. ^ With the Internet. None ’sets up a DHCP server, which will use the DHCP method to cut the private data into 1 minute, 1 a, and $ network respectively. 】 ‘Ethernet and wireless LAN each support the right one ^. There are several IPs, and each household can get a dynamic IP; where the client I p is set to obtain it automatically. Then set up a NAT server to redirect the client's private IP, and use the server's public IP to connect to the Internet. Set up the W I N S server, so that the customers of the two local networks can use the name N e ΐ B I 0S to turn it through the W I NS server! p, directly access the data of another LAN member. DHCP will be described in detail in conjunction with a preferred embodiment of the present invention. First, a Windows server is installed on a computer with three network cards inserted. The first is an Ethernet card. The IP setting text of the network card is a valid IP, for example: 2 0 2 · 1 4 5 · 7 3 · 1 8 8; the second piece is an Ethernet network card. Set the IP value of the second piece of network card. Is a virtual P, for example: 192.168.0.1 'and the second piece is a wireless network card, and the IP of the third piece of network card is set to a virtual IP, for example: 1 9 2. 1 6 8. 0 · 1 2 9 . Connect T, connect the ADSL modem to the first network card; the second network card is connected to the hub (HUB); the third network card directly acts as a wireless zone Internet gateway (ge te way) 〇

544580 V. Description of the invention (9) Then 'install the DHCP service on the WI ND0WS server, and set this group of Ethernet IP 192.168.0.1 ~ 126 (subnet mask: 255.2255. 2 5 5 · 1 2 8 ) And wireless LAN I p 1 9 2 · 1 6 8. 0 · 1 2 9 ~ 2 5 4 (subnet mask: 2 55 · 2 5 5_ 2 5 5. 1 28) assigned to MCP management. Since the IPs of all customers' personal computers are set to obtain automatically, the DNS can be set to the DNS server provided by the I SP, for example: Set the DNS server address of TTN to 2 1 0 · 1 7 · 1. 1 . Set the Ethernet and wireless networks to 19 2 · 1 6 8 · 0 · 1 and 1 9 2. 1 6 8 · 0 · 1 2 9 Go to the default gateway ° Next, refer to Figure 7 to go Describe WINS for setting up NAT and DHCP. In the network address translation setup section: Run "Routing and Remote Access" on WIND〇ws, select-IP routing, and then select NAT as the new routing protocol. Next, run "Set the network address Translate the routing protocol router "and set this router on the first network card. In this way, the Ethernet LAN and the wireless LAN can simultaneously access Internet resources through the same network address translation server (NAT). Furthermore, in the setting of the W I N S section: first, install the W I N S server; then set the designated client WINS server information in the DHCP server. In summary, the present invention enables an Ethernet network and a wireless LAN to access Internet resources on an Ethernet server and a NAT server by adding a wireless network card. Then use w 丨 NS server to make

Page 12 544580 V. Description of the Invention GO) The two regional networks can separate and contribute to each other's internal sources. The description of a specific embodiment of the present invention is now completed. It should therefore be understood that many variations can be made without departing from the spirit of the invention. The scope of the additional patent application is intended to include modifications that fall within the scope and spirit of the invention. In addition, the present invention can be implemented in different network elements, including but not limited to a main server, a proxy server, an adapter card, and the like. Those skilled in the art must understand that the disclosed embodiments are to be considered in all respects as illustrative and not restrictive.

Page 544 580 Brief description of the drawings The following drawings are included in the present invention to provide a complete understanding of the present invention, and are incorporated in the present invention to form a part of the description of the structure, and explain the embodiments disclosed by the present invention. To illustrate the principle of the present invention: Figure 1 illustrates a block diagram of a conventional network connection architecture; Figure 2 illustrates a NAT translation process; Figure 3 illustrates a NAT many-to-one mechanism; Figure 4 illustrates the process of IP broadcast between workstations; Fifth is the architecture of the preferred embodiment of the present invention; Figure 6 is a flowchart of the preferred embodiment of the present invention; and Figure 7 is a description of the WINS for setting up NAT and configuring DHCP in the preferred embodiment of the present invention.

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Claims (1)

544580 VI. Application for Patent Scope 1. A method for establishing a virtual access device using a wireless LAN card, applicable to a Windows server environment, and a method for forming wireless LAN communication and sharing resources through the wireless LAN card The method includes at least the following steps: (1) Install a wireless LAN card on the Ethernet server, and other wireless clients use Ad-Hoc to build a wireless LAN; (2) Set up a DH CP server, the client's private IP is set to automatically obtain 4; (3) Set up a network address translation server (NAT) server to make the client's private IP address, and connect to the server public IP The Internet; and (4) Setting up a WI NS server, so that customers in both LANs can use the NetBIOS name and IP address through the WINS server to directly access the data of another LAN member. . 2. For the method of applying for the first item in the patent scope, the step of setting up a DHCP server further includes: using DHCP to separate the private area network and cutting the subnet masks separately, so that the Ethernet area network and the wireless area Each network has several IPs, and clients can get a dynamic IP. 3. For the method in the second scope of the patent application, the dynamic IP of the client is private. 4. For the method of applying for the first item in the scope of patent application, the step of setting up a DHCP server further includes: installing a WINDOWS server with at least three pieces inserted Page 15 544580 VI. Patent application scope On the computer, the first piece of Ethernet card I p is set to a legal public IP 'I of the second piece of Ethernet card is also a virtual IP, and the IP of the third wireless network card is also set to a virtual IP. 5. If the method of applying for the fourth item of the scope of the patent application, further includes: connecting the aj) SL modem to the first network card, the second network card to the hub, and the third network card It directly acts as a wireless LAN gateway (Ge te w ay). 6. If method 5 of the scope of patent application is applied, it further includes installing a DHCP server on the window S server and assigning IP subnet masks to the DHCP server management respectively. 7. For example, please use the method in item 6 of the patent, in which the IPs of all customers' personal computers are set to obtain automatically, and the Ethernet and wireless network gateways are preset respectively. Therefore, the DNS can be set to the MS provided by the ISP. Above the feeder. 8. If _ please patent the scope of the first step _ to fight for the method 'Set up the DHCP client of the WU in April t server and set the D / server to use the local area network card. The system contains multiple networks. What is the system of creating a virtual access device, the server computer? When the server contains multiple clients that are always connected to the network port computer, they exist. 544580 6. The scope of the patent application is a connection method for a plurality of user computers. Each user computer can connect to the network system. The method includes the following steps: (1) Install a wireless on the Ethernet LAN server. LAN card, other wireless client commands] Use A d-c oc to build a wireless LAN; (2) Set up a DHCP server, the client IP is set to obtain automatically; (3) Set up the network The address translation server enables the client's private IP address to be connected to the Internet using the server's public IP; and (4) the WI NS server is set up so that customers on both local networks can use the NetBIOS name. It is converted into IP through WINS server to directly access the data of another local network member. Page 17