KR20020036994A - Private Web Hosting to access web servers in private network - Google Patents

Private Web Hosting to access web servers in private network Download PDF

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Publication number
KR20020036994A
KR20020036994A KR1020020019133A KR20020019133A KR20020036994A KR 20020036994 A KR20020036994 A KR 20020036994A KR 1020020019133 A KR1020020019133 A KR 1020020019133A KR 20020019133 A KR20020019133 A KR 20020019133A KR 20020036994 A KR20020036994 A KR 20020036994A
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private
address
private network
web
http
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KR1020020019133A
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Korean (ko)
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김태준
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김태준
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/09—Mapping addresses
    • H04L61/25—Mapping addresses of the same type
    • H04L61/2503—Translation of Internet protocol [IP] addresses
    • H04L61/2514—Translation of Internet protocol [IP] addresses between local and global IP addresses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2803—Home automation networks

Abstract

PURPOSE: A method and service for a private web hosting for supporting an access to web server positioned in a private network is provided to access to an individual device in a private network in an external Internet through an HTTP by suggesting a private web hosting server for hosting a web server mounted at the individual device in the private network having a private IP address or a licensed IP address and mounting the private web hosting server in a gateway positioned at a boundary line between the Internet and the private network. CONSTITUTION: A remote terminal(101) which is a mobile terminal as a computer or a PDA, a wireless LAN terminal, and a mobile phone accesses to an individual device(104) in a private network using a web browser. An NAT(Network Address Translation)(102) converts an IP address of the private network into a licensed IP address, and performs a reverse process thereof. A private web hosting server(103) is operated as a representative web server of the private network and supports an access to the individual device(104) in the private network through an HTTP in the remote terminal(101) by a domain name. The individual device(104) in the private network uses a private IP address and a licensed IP address in the private network. The NAT(102) and the private web hosting server(103) are mounted in a gateway generally.

Description

사설망 내부에 위치하는 웹 서버로의 접근을 지원하는 사설 웹호스팅 방법 및 서비스 {Private Web Hosting to access web servers in private network}Private web hosting method and service that supports access to a web server located inside a private network {Private Web Hosting to access web servers in private network}

본 발명은 사설망, 특히 홈네트워크 내부에 위치하는 개별장치들을 외부 인터넷에서 접근하도록 해주는 방법과 서비스에 관한 것이다.The present invention relates to a method and a service for allowing individual devices located inside a private network, especially a home network, to be accessed from the external Internet.

종래의 사설 IP 주소를 사용하는 사설망의 운용을 살펴보면 NAT(Network Address Translation) 기법을 사용하여 사설 IP 주소를 갖는 사설망 내 다수의 장치들이 하나 또는 소수의 공인 IP 주소를 공동으로 사용하여 외부 인터넷으로 통신할 수 있다. 하지만 외부 인터넷에서 사설망, 특히 홈네트워크에 있는 사설 IP주소를 갖는 개별장치들을 접근하는 것은 사설 IP 주소가 외부에서 보이지 않기 때문에 여의치가 않다.Looking at the operation of a private network using a conventional private IP address, using a NAT (Network Address Translation) technique, multiple devices in a private network having a private IP address to communicate with the outside Internet using one or a few public IP addresses jointly can do. However, accessing individual devices with private IP addresses on the private network, especially on the home network, from the outside Internet is not effective because the private IP addresses are not visible from the outside.

한편 하나의 웹 서버에서 다수의 도메인에 대한 웹 서비스, 즉 가상 웹 호스팅을 지원하는 방법이 있으나 이러한 가상 웹 호스팅은 하나의 컴퓨터 내에서만 지원되므로 외부 인터넷에서 사설망내 개별 장치에 탑재된 웹 서버로 접근하는 것을 지원할 수 없다.On the other hand, there is a way to support web service, that is, virtual web hosting, for multiple domains in one web server, but since this virtual web hosting is only supported on one computer, it is accessed from the external Internet to a web server mounted on a separate device in a private network. I can't support that.

이와 같은 문제로 홈 네트워크와 같은 사설망내 개별 장치에 http로 접근할 수가 없어 홈 네트워크 서비스의 활성화에 많은 걸림돌이 되고 있다.Due to this problem, individual devices in a private network such as a home network cannot be accessed by http, which causes many obstacles to activation of home network services.

따라서, 상기 문제점을 해결하기 위하여 본 발명은 사설 IP 주소 또는 공인 IP 주소를 갖는 사설망내 개별장치에 탑재된 웹 서버를 호스팅 해주는 사설 웹 호스팅 서버를 제안하고, 이를 인터넷과 사설망사이의 경계선에 위치하는 게이트웨이에 탑재하여 외부 인터넷에서 사설망내 개별 장치에 http로 접근할 수 있게 해주는 사설 웹호스팅 서비스를 제공하는 것을 목적으로 한다.Accordingly, in order to solve the above problem, the present invention proposes a private web hosting server for hosting a web server mounted on an individual device in a private network having a private IP address or a public IP address, which is located at the boundary between the Internet and the private network. The purpose of this is to provide a private web hosting service that can be installed in a gateway to allow http access to individual devices in a private network from the outside Internet.

도 1 사설 웹 호스팅 서비스를 위한 전체 구성도1 is a schematic diagram for a private web hosting service

도 2 사설 웹 호스팅서버에서 원격단말의 http 요청 메시지 처리 절차도2 is a http request message processing procedure of a remote terminal in a private web hosting server

도 3 사설 웹 호스팅서버에서 사설망내 개별장치의 http 응답 메시지 처리 절차도3 is a procedure of processing http response messages of individual devices in a private network in a private web hosting server.

이하 본 발명의 실시 예를 첨부된 도면을 참조하여 설명한다.Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

도 1은 본 발명의 바람직한 실시 예에 따른 사설 웹 호스팅 서비스를 위한 전체 구성도를 보여준다. 전체의 구성을 살펴보면 다음과 같다; 컴퓨터 또는 PDA, 무선 LAN 단말 및 휴대폰과 같은 이동단말로서 웹브라우져를 이용하여 사설망내 개별장치에 접근하는 원격단말(101); 사설망의 IP 주소를 공인 IP 주소로 변환하고 반대로도 변환해주는 NAT(Network Address Translation)(102); 사설망의 대표적인 웹 서버로 동작하며 원격단말(101)에서 도메인명에 의해 사설망내 개별장치에 http로 접근하는 것을 지원해주는 사설 웹호스팅 서버(103); 및 사설망에서 사설 IP 주소 또는 공인 IP 주소를 사용하는 사설망내 개별장치(104)로 구성되는 것을 특징으로 한다. 여기서 NAT(102)와 사설 웹호스팅 서버(103)는 일반적으로 게이트웨이에 탑재된다..1 shows an overall configuration diagram for a private web hosting service according to a preferred embodiment of the present invention. The overall structure is as follows; A remote terminal 101 for accessing individual devices in a private network using a web browser as a mobile terminal such as a computer or a PDA, a wireless LAN terminal and a mobile phone; A network address translation (NAT) 102 for translating a private network's IP address into a public IP address and vice versa; A private web hosting server 103 that acts as a representative web server of a private network and supports http access to individual devices in the private network by a domain name in the remote terminal 101; And an individual device 104 in the private network using a private IP address or a public IP address in the private network. The NAT 102 and private web hosting server 103 are typically mounted on a gateway.

본 발명의 바람직한 실시 예에서 원격단말(101)에서 사설 웹호스팅 서버(103)의 도움을 받아 사설망내 개별장치(104)에 탑재된 웹서버에 접근하는 방법은 다음과 같다; 게이트웨이에 탑재되는 사설 웹호스팅 서버(103)는 도메인명 기반의 가상 웹 호스팅 기능을 갖는다. 사설 웹호스팅 서버(103)가 지원하는 가상 웹 서버는 물리적으로 게이트웨이 내부에 탑재될 수 있지만 사설망내 개별장치(104)에 탑재될 수도 있다. 사설 웹호스팅 서버(103)는 인터넷의 원격단말(101)로부터 http 요청 메시지를 받아서 목적지 도메인명이 사설망내 개별장치(104)일 경우 그 http 요청 메시지를 해당 사설망내 개별장치(104)로 전달한다. 이와 같은 http 요청 메시지의 전달 처리과정은 도2에 도시 되어 있다. 원격단말로부터 받은 http 요청 메시지(201)에 포함된 목적지 도메인명을 조사한다(202). 목적지 도메인명이 게이트웨이 내부에 있으면 해당 가상 웹 서버로 http 요청 메시지를 넘긴다(204). 목적지 도메인명에 해당하는 웹서버가 사설망내 개별장치(104)에 탑재되어 있으면(203) 목적지 도메인명에 해당하는 IP주소를 구하여 이를 목적지 IP 주소로 설정하고, 목적지 포트번호는 사설망내 http 통신 절차에 할당된 포트번호를 설정하며, 발신측 포트번호와 IP 주소는 http 요청 메시지의 것을 그대로 설정하여 사설망내 해당 장치에 탑재된 웹서버로 http 요청 메시지를 전달한다(205).In a preferred embodiment of the present invention, a method of accessing a web server mounted on an individual device 104 in a private network with the help of a private web hosting server 103 in a remote terminal 101 is as follows; The private web hosting server 103 mounted in the gateway has a domain name-based virtual web hosting function. The virtual web server supported by the private web hosting server 103 may be physically mounted inside the gateway, but may also be mounted on an individual device 104 in the private network. The private web hosting server 103 receives the http request message from the remote terminal 101 of the Internet and transmits the http request message to the individual device 104 in the private network when the destination domain name is the individual device 104 in the private network. This process of delivering the http request message is illustrated in FIG. 2. The destination domain name included in the http request message 201 received from the remote terminal is examined (202). If the destination domain name is inside the gateway, the http request message is passed to the corresponding virtual web server (204). If the web server corresponding to the destination domain name is mounted on the individual device 104 in the private network (203), the IP address corresponding to the destination domain name is obtained and set as the destination IP address, and the destination port number is the http communication procedure in the private network. The port number assigned to the server is set, and the source port number and the IP address are set to those of the http request message as it is and the http request message is transmitted to the web server mounted on the corresponding device in the private network (205).

도 3은 본 발명의 바람직한 실시 예에서 사설 웹 호스팅 서버(103)가 사설 IP 주소를 갖는 사설망내 개별장치(104)에서 인터넷 상의 원격단말(101)로 보내는 http 응답 메시지를 받아서 처리하는 절차도이며, 구체적인 처리방법은 다음과 같다; 사설망내 개별장치(104)에서 목적지 IP 주소와 포트번호는 받은 http 요청 메시지의 발신지 IP 주소와 포트번호를 사용하고, 발신지 IP 주소와 포트번호는 받은 http 요청 메시지의 목적지 IP 주소와 포트번호로 설정하여 보낸 http 응답 메시지를 사설 웹호스팅 서버(103)가 받는다(301). http 응답 메시지를 받은 사설 웹호스팅서버(103)는 http 응답 메시지의 발신지 IP 주소와 포트번호를 당초 원격단말(101)로부터 받은 http 요청 메시지의 목적지 IP 주소와 포트번호로 대체한 후(302) 원격단말(101)로 전달한다(303). 여기서 원격단말(101)이 보낸 http 요청메시지의 목적지 IP 주소는 사설 웹호스팅 서버가 탑재된 게이트웨이의 공인 IP 주소가 되고, http 요청메시지의 목적지 포트번호는 http 통신절차에 고정적으로 할당된 포트번호, 예로 80번이 된다. 만약 게이트웨이의 공인 IP 주소가 다수이거나, http 통신절차에 할당된 포트번호가 유동적일 경우는 원격단말이 보내는 http 요청 메시지의 목적지 IP 주소와 목적지 포트번호 및 목적지 도메인명, 발신지 IP 주소와 발신지 포트번호 및 발신지 도메인 명 정보를 사설 웹 호스팅 서버의 내부 저장소에 저장하고, 사설망내 개별장치에서 보낸 http 응답 메시지를 원격단말로 전달할 때 저장된 http 요청 메시지의 목적지 IP 주소와 목적지 포트번호를 읽어내어 http 응답 메시지의 발신지 IP 주소와 포트번호로 사용하도록 한다.3 is a diagram illustrating a procedure for receiving and processing an http response message sent from a private web hosting server 103 to a remote terminal 101 on the Internet from an individual device 104 in a private network having a private IP address in a preferred embodiment of the present invention. The specific treatment method is as follows; The destination IP address and port number in the private device 104 in the private network use the source IP address and port number of the received http request message, and the source IP address and port number are set as the destination IP address and port number of the received http request message. The private web hosting server 103 receives the http response message sent (301). After receiving the http response message, the private web hosting server 103 replaces the source IP address and port number of the http response message with the destination IP address and port number of the http request message originally received from the remote terminal 101 (302). The transfer to the terminal 101 (303). Here, the destination IP address of the http request message sent by the remote terminal 101 becomes the public IP address of the gateway on which the private web hosting server is mounted, and the destination port number of the http request message is a port number fixedly assigned to the http communication procedure, For example, 80. If there are multiple public IP addresses of the gateway or the port number assigned in the http communication procedure is flexible, the destination IP address and destination port number, destination domain name, source IP address and source port number of the http request message sent by the remote terminal. And store the source domain name information in the internal storage of the private web hosting server and read the destination IP address and destination port number of the stored http request message when forwarding the http response message sent from an individual device in the private network to the remote terminal. Use as source IP address and port number of.

본 발명의 바람직한 실시 예에서 사설 IP 주소를 갖는 다수의 사설망내 개별장치(104)에서 인터넷으로 http 요청 메시지를 발송하는 것은 종래의 NAT 기능을 사용하는 방법과 동일하다.In a preferred embodiment of the present invention, sending the http request message to the Internet from a plurality of individual devices 104 in a private network having a private IP address is the same as using a conventional NAT function.

본 발명의 바람직한 실시 예에서 원격단말(101)에서 가정내 보안감시 카메라장치인 camera.kildong.pe를 접근하여 가정내부를 감시하는 사례를 기술하면 다음과 같다; 원격단말에서 http://camera.kildong.pe 명령어로 http 요청 메시지를 보낸다. camera.kildong.pe의 공인 IP 주소는 www.kildong.pe의 도메인명을 갖는 게이트웨이의 공인 IP 주소로 번역되므로 발송된 http 요청 메시지는 게이트웨이로 보내진다. 이를 받은 게이트웨이내 사설 웹호스팅 서버는 그 메시지에 포함된 목적지 도메인명인 camera.kildong.pe를 번역하여 해당 사설 IP 주소를 구한다. 여기서 camera.kildong.pe의 주소 번역은 자체적으로 또는 사설망내 DNS(Domain Name Service) 네임서버를 이용할 수 있다. 구해진 IP 주소를 목적지 IP 주소, 사설망내 http 통신 절차에 할당된 포트번호를 목적지 포트번호로 하고, 발신지 IP 주소와 포트번호는 받은 http 요청 메시지의 것을 그대로 설정한 후 http 요청 메시지를 camera.kildong.pe로 전달한다. http 요청메시지를 받은 camera.kildong.pe는 http 응답 메시지를 만들어서 반송하는데, 이때 목적지 IP 주소와 포트번호는 받은 http 요청 메시지의 발신지 IP 주소와 포트번호를 사용하고 발신지 IP 주소와 포트번호는 받은 http 요청 메시지의 목적지 IP 주소와 포트번호를 사용한다.In the preferred embodiment of the present invention describes a case of monitoring the inside of the home by accessing camera.kildong.pe in the home security surveillance camera device in the remote terminal 101 as follows; The remote terminal sends a http request message with the command http://camera.kildong.pe. Since the public IP address of camera.kildong.pe is translated into the public IP address of the gateway with the domain name of www.kildong.pe, the http request message sent is sent to the gateway. The private web hosting server in the gateway receiving the gateway translates the destination domain name camera.kildong.pe included in the message to obtain the corresponding private IP address. Here, the address translation of camera.kildong.pe may use a DNS (Domain Name Service) name server in itself or in a private network. The obtained IP address is the destination IP address and the port number assigned to the http communication procedure in the private network as the destination port number, and the source IP address and the port number are set to those of the received http request message, and the http request message is set to camera.kildong. to pe. camera.kildong.pe receives http request message and returns http response message, where destination IP address and port number use source IP address and port number of received http request message, and source IP address and port number are received http Use the destination IP address and port number of the request message.

camera.kildong.pe로부터 http 응답메시지를 받은 사설 웹호스팅서버(103)는 이 메시지의 발신지 IP 주소와 포트번호를 자신이 탑재된 게이트웨이의 공인 IP 주소와 http 통신절차에 고정적으로 할당된 포트번호, 예로 80번의 포트번호로 대체한 후 원격단말로 전달한다.The private web hosting server 103 receiving the http response message from the camera.kildong.pe sends the source IP address and port number of the message to the public IP address of the gateway on which it is mounted and the port number fixedly assigned to the http communication procedure, For example, replace with port number 80 and transfer it to the remote terminal.

본 발명은 사설 또는 공인 IP 주소를 갖는 사설망내 개별장치에 탑재된 웹 서버를 호스팅해주는 사설 웹 호스팅 서버를 제안하고, 이를 인터넷과 사설망사이의 경계선에 위치하는 게이트웨이에 탑재하여 외부 인터넷에서 사설망내 개별 장치에 http로 접근할 수 있게 해주는 것이다. 이러한 사설 웹 호스팅 서버의 도움으로 외부 인터넷에서 도메인 명으로 사설망, 특히 홈 네트워크내 개별 장치에 접근하여 원격 감시 및 제어를 용이하게 할 수 있어 홈 네트워크 서비스의 활성화에 기여할 수 있는 효과를 얻을 수 있다.The present invention proposes a private web hosting server for hosting a web server mounted on an individual device in a private network having a private or public IP address, and mounts it on a gateway located at a boundary between the Internet and the private network to separate the individual in the private network from the external Internet. It allows you to access your device with http. With the help of such a private web hosting server, access to a private network, especially an individual device in a home network, with a domain name from the external Internet can be facilitated for remote monitoring and control, thereby contributing to the activation of home network services.

아울러 본 발명의 상기 설명은 단지 예시 및 설명의 목적으로 제시된 것이다. 본 발명은 제시된 형태에 한정하지 않으며, 상기 설명한 본 발명의 원리에 비추어 많은 변형 및 수정이 가능하다. 설명된 실시 예들은 당업자들이 본 발명을 다양한 실시 예들에서, 그리고 하고자 하는 특정한 이용에 적절하게 변형하여 이용할 수 있도록 본 발명의 원리 및 실질적인 제공을 최상으로 설명하고자 선택된 것들이다. 본 발명의 범위는 하기 첨부된 청구범위에 의해서만 한정된다.In addition, the above description of the present invention has been presented for purposes of illustration and description only. The invention is not limited to the form shown, and many variations and modifications are possible in light of the principles of the invention described above. The described embodiments are selected to best describe the principles and substantive provisions of the present invention in order that those skilled in the art may use the invention in various embodiments and as appropriate to the specific application desired. It is intended that the scope of the invention only be limited by the appended claims below.

Claims (2)

사설 또는 공인 IP 주소를 갖는 사설망내 개별장치(104)에 탑재된 개별 웹 서버를 외부 인터넷의 원격단말(101)에서 도메인 명에 의해 http로 접근할 수 있게 해주는 사설 웹 호스팅 서버; 및 사설 웹 호스팅서버를 인터넷과 사설망과의 경계선에 위치하는 게이트웨이에 탑재하여 외부 인터넷의 원격단말(101)에서 도메인명에 의해 사설망내 개별장치(104)에 http로 접근하도록 해주는 사설 웹 호스팅 서비스 방법.A private web hosting server for allowing individual web servers mounted on individual devices 104 in a private network having a private or public IP address to be accessed by http by a domain name from a remote terminal 101 of the external Internet; And a private web hosting server mounted on a gateway located at a boundary between the Internet and a private network, allowing a remote terminal 101 of the external Internet to access individual devices 104 in the private network by http with a domain name as http. . 청구항 1에서,In claim 1, 사설 웹 호스팅 서버가 원격단말로부터 받은 http 요청 메시지의 목적지가 사설망내 개별장치(104)에 탑재된 웹 서버일 경우 목적지 IP 주소는 목적지 도메인명으로부터 구한 IP 주소를 사용하고, 목적지 포트번호는 사설망내 http 통신절차에 할당된 포트번호를 사용하고, 발신지 IP 주소와 포트번호는 http 요청 메시지의 발신지IP 주소와 포트번호를 사용하여 해당 개별장치에 탑재된 웹 서버로 받은 http 요청 메시지를 전달하는 방법(205); 및 사설 웹 호스팅 서버가 사설망내 개별장치로부터 받은 http 응답메시지의 발신지 IP 주소와 포트번호를 사설 웹 호스팅 서버가 탑재된 게이트웨이의 공인 IP 주소와 http 통신절차에 고정적으로 할당된 포트번호, 예로 80번으로 대체한 후 원격단말로 전달하는 방법(302,303).If the destination of the http request message received by the private web hosting server from the remote terminal is a web server mounted on the individual device 104 in the private network, the destination IP address uses an IP address obtained from the destination domain name, and the destination port number is in the private network. Using the port number assigned in the http communication procedure, using the source IP address and port number of the http request message as the source IP address and port number to deliver the http request message received to the web server mounted on the individual device. 205); And the IP address and port number of the http response message received by the private web hosting server from the individual device in the private network, and the public IP address of the gateway equipped with the private web hosting server and the port number fixedly assigned to the http communication procedure. Substituting this to the remote terminal (302,303).
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KR20040001254A (en) * 2002-06-27 2004-01-07 주식회사 케이티 The Home gateway for supporting Multiple Class IP Addressing Service
KR20040009627A (en) * 2002-07-24 2004-01-31 장영호 Broadband xDSL/Cable Router
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