CN113472873B - Method for fixing pseudo IP address to access router homepage - Google Patents
Method for fixing pseudo IP address to access router homepage Download PDFInfo
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- CN113472873B CN113472873B CN202110713102.8A CN202110713102A CN113472873B CN 113472873 B CN113472873 B CN 113472873B CN 202110713102 A CN202110713102 A CN 202110713102A CN 113472873 B CN113472873 B CN 113472873B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
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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
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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
- H04L61/2596—Translation of addresses of the same type other than IP, e.g. translation from MAC to MAC addresses
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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
- H04L61/50—Address allocation
- H04L61/5007—Internet protocol [IP] addresses
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate
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Abstract
The invention relates to the router technical field, and discloses a method for accessing a router homepage by fixing a pseudo IP address. In this way, the bi-directional communication from the client to the link layer of the router is performed by using the pseudo IP address, in this way, the conventional access manner by the IP address or domain name can be replaced, and the router homepage can be ensured to be successfully accessed regardless of whether the router works in the gateway or in the bridge mode.
Description
Technical Field
The invention relates to the technical field of structural engineering, in particular to a method for accessing a router homepage by a fixed pseudo IP address.
Background
Currently, in the process of configuring a router, a router homepage needs to be accessed at a client, most of the router homepage is accessed through an IP address or a domain name at the present stage, the IP address of the router is dynamically allocated by a bridge router for a bridge mode, the IP address is unknown to a user, so that the bridge mode is difficult to access through the IP address, the domain name access is realized through hijacking of a DNS, but some browsers judge whether the domain name resolution is derived from resolution of authoritative domain name resolution or not, if the domain name resolution is not directly refused by the browser, and the other browsers must contain www, the beginning or the com and the end of cn for the domain name, or else the domain name is refused to access by the browser.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a method for accessing a router homepage by using a fixed pseudo IP address of the pseudo IP mode to access the router homepage regardless of whether a router works in a gateway or the router actual IP address is in a bridge mode.
The aim of the invention is realized by the following technical scheme:
a method of securing a pseudo IP address to access a router homepage, comprising:
s101, a router generates a predefined pseudo IP address and a pseudo IP mapping table;
s102, the client generates an http request to the predefined pseudo IP address and acquires an MAC address corresponding to the predefined pseudo IP address;
s103, the client identifies whether the predefined pseudo IP address and the client IP address are the same network segment or not, and initiates the http request to the predefined pseudo IP address;
s104, the router generates an interception instruction at a link layer, saves a source MAC address in an http data packet and a destination MAC address in the http data packet into the pseudo IP mapping table, and carries out modification operation on the destination IP address in the http data packet and the destination MAC address;
s105, the router intercepts the modified http data packet at the link layer, extracts a destination MAC address corresponding to the source MAC address in the pseudo IP mapping table, carries out changing operation, generates a feedback data packet and sends the feedback data packet to the client.
In one embodiment, in the step that the client generates an http request to the pseudo IP address and obtains the MAC address corresponding to the predefined pseudo IP address, the method further includes the following steps:
if the predefined pseudo IP address is the same as the network segment of the IP address of the client, judging whether the MAC address corresponding to the predefined pseudo IP address can be searched from an ARP table, if yes, initiating an http request to the MAC address corresponding to the predefined pseudo IP address and the predefined pseudo IP address, if not, initiating an ARP request in a local area network by the client, acquiring a corresponding destination MAC address of the predefined pseudo IP address, and sending an ARP data packet by the router, replying the ARP data packet by the router, so that the client acquires the MAC address corresponding to the predefined pseudo IP address, and storing the MAC address in the ARP table, and simultaneously, initiating an http request to the MAC address corresponding to the predefined pseudo IP address by the client to generate a data packet and sending the data packet to the router;
if the predefined pseudo IP address is different from the network segment of the IP address of the client, the client initiates the http request to a gateway MAC address and the predefined IP address.
In one embodiment, the modifying operation specifically includes the following steps:
and modifying the destination IP address and the destination MAC address in the http data packet into a network bridge IP address and a network bridge MAC address, and calculating a check value of the http data packet.
In one embodiment, the modifying operation specifically includes the following steps:
comparing the destination MAC address in the http data packet with the source MAC address in the pseudo-IP mapping table, if the destination MAC address is the same, setting the destination MAC address in the pseudo-IP mapping table corresponding to the source MAC address in the pseudo-IP mapping table as a first destination MAC address, changing the source IP address in the http data packet into the predefined pseudo-IP address, changing the source MAC address of the http data packet into the first destination MAC address, and calculating the check value of the http data packet.
In one embodiment, after extracting the source MAC address and the pseudo IP address in the pseudo IP mapping table in the step to generate a feedback packet, and sending the feedback packet to the client, the method further includes the following steps:
the client acquires the feedback data packet to access the router homepage.
Compared with the prior art, the invention has the following advantages:
the invention relates to a method for accessing router homepage by fixed pseudo IP address, which comprises pre-defining a pseudo IP address form, intercepting http data packet at router link layer for modification, changing the destination MAC address and destination IP address of the intercepted data packet into the actual MAC address and actual IP address of router bridge card, and re-counting check code to make client end smoothly access router homepage. In this way, the bi-directional communication from the client to the link layer of the router is performed by using the pseudo IP address, in this way, the conventional access manner by the IP address or domain name can be replaced, and the router homepage can be ensured to be successfully accessed regardless of whether the router works in the gateway or in the bridge mode.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of steps of a method for a fixed pseudo IP address to access a router homepage according to an embodiment of the present invention.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
In one embodiment, a method for accessing a router homepage by a fixed pseudo IP address includes the steps of:
s101, a router generates a predefined pseudo IP address and a pseudo IP mapping table;
s102, the client generates an http request to the pseudo IP address and acquires an MAC address corresponding to the predefined pseudo IP address;
s103, the client identifies whether the predefined pseudo IP address and the client IP address are the same network segment or not, and initiates an http request to the predefined pseudo IP address;
s104, the router generates an interception instruction at a link layer, saves a source MAC address in an http data packet and a destination MAC address in the http data packet into a pseudo IP mapping table, and modifies the destination IP address and the destination MAC address in the http data packet;
s105, the router intercepts the modified http data packet at the link layer, extracts a destination MAC address corresponding to the source MAC address in the pseudo IP mapping table, carries out changing operation, generates a feedback data packet and sends the feedback data packet to the client.
In order to better understand the technical concept of the method of the fixed pseudo IP address to access the router homepage, in particular,
step S101, the router generates a predefined pseudo IP address and a pseudo IP mapping table.
It should be noted that, first, the predefined pseudo IP address is set by a worker, and after the setting, the pseudo IP address is not changeable, and the pseudo IP mapping table is used to store the source MAC address and the destination MAC address of the http packet.
Step S102, the client generates an http request to the predefined pseudo IP address and acquires the MAC address corresponding to the predefined pseudo IP address.
It should be noted that, the client generates a request for accessing the homepage of the router, that is, an http request, and obtains the MAC address corresponding to the predefined pseudo IP address, so as to send the http request to the router.
Step S103, the client identifies whether the predefined pseudo IP address and the client IP address are the same network segment or not, and initiates an http request to the predefined pseudo IP address.
Specifically, in the step that the client generates an http request to the pseudo IP address and obtains the MAC address corresponding to the predefined pseudo IP address, the method further includes the following steps:
if the predefined pseudo IP address is the same as the network segment of the IP address of the client, judging whether the MAC address corresponding to the predefined pseudo IP address can be searched from an ARP table, if so, initiating an http request to the MAC address corresponding to the predefined pseudo IP address and the predefined pseudo IP address, if not, initiating an ARP request in a local area network by the client, acquiring the corresponding destination MAC address of the predefined pseudo IP address, and sending an ARP data packet to a router, and replying the ARP data packet by the router by using the own bridge MAC address, so that the client acquires the MAC address corresponding to the predefined pseudo IP address, saves the MAC address in the ARP table, and simultaneously, initiating an http request to the MAC address corresponding to the predefined pseudo IP address by the client to generate the data packet to be sent to the router; if the predefined pseudo IP address is different from the network segment of the IP address of the client, the client initiates an http request to the gateway MAC address and the predefined IP address.
It should be noted that before the client sends the http request to the router, it needs to determine whether the IP address of the client is the same as the network segment of the predefined pseudo IP address, if not, the client searches the MAC address corresponding to the predefined pseudo IP address in its own APR table, if so, directly initiates the http request to the MAC address and the predefined pseudo IP address, if the client cannot find the MAC address corresponding to the predefined pseudo IP address in its own ARP table, the client initiates the APR request in the lan, obtains the destination MAC address corresponding to the predefined pseudo IP address, and sends an ARP packet request to the router, and after the router receives the ARP packet, the router replies to the client with its own bridge MAC address, so that the client obtains the MAC address corresponding to the predefined pseudo IP address, records in its own ARP table, and initiates the http request to the predefined pseudo IP address, and then the client generates an http packet and sends the http packet to the router. Further, if the IP address of the client is different from the network segment of the predefined pseudo IP address, the client may initiate an http request to the MAC address of the gateway and the predefined IP address.
S104, the router generates an interception instruction at the link layer, saves a source MAC address in the http data packet and a destination MAC address in the http data packet into a pseudo IP mapping table, and modifies the destination IP address and the destination MAC address in the http data packet.
Specifically, the modification operation includes the following steps:
and modifying the destination IP address and the destination MAC address in the http data packet into the network bridge IP address and the network bridge MAC address, and calculating the check value of the http data packet.
It should be noted that, the router may generate an interception instruction at the link layer, intercept the http data packet, and modify the http data packet, first save the source MAC address in the http data packet and the destination MAC address in the http data packet in the pseudo IP mapping table, then change the destination IP address and the destination MAC address in the http data packet into the bridge IP address and the bridge MAC address, respectively, and after modification, reproduce and calculate the check value of the http data packet, and after modification, continue to send, so that the http data packet can smoothly reach the http server of the router.
Step 105, the router intercepts an http data packet replied to the client request at the link layer, extracts a destination MAC address corresponding to the source MAC address in the pseudo IP mapping table, performs a modification operation, generates a feedback data packet, and sends the feedback data packet to the client.
Specifically, the modification operation includes the following steps:
comparing the destination MAC address in the http data packet with the source MAC address in the pseudo-IP mapping table, if the destination MAC address is the same, setting the destination MAC address in the pseudo-IP mapping table corresponding to the source MAC address in the pseudo-IP mapping table as a first destination MAC address, changing the source IP address in the http data packet into a predefined pseudo-IP address, changing the source MAC address of the http data packet into the first destination MAC address, and calculating the check value of the http data packet.
More specifically, the step of extracting the source MAC address and the pseudo IP address in the pseudo IP mapping table, generating a feedback packet, and sending the feedback packet to the client, further includes the following steps:
the client obtains the feedback data packet to access the access router homepage.
It should be noted that, the router intercepts the destination MAC address in the http packet at the link layer and compares the destination MAC address with the source MAC address in the pseudo IP mapping table, if the destination MAC address is the same, the destination MAC address in the pseudo IP mapping table corresponding to the source MAC address in the pseudo IP mapping table is assumed to be the first destination MAC address, and simultaneously, the intercepted http packet is modified, the source IP address in the http packet is changed to a predefined pseudo IP address, the source MAC address of the http packet is changed to the first destination MAC address, the check value of the http packet is recalculated, after modification, a feedback packet is generated and sent to the client, and finally, the homepage of the access router is realized.
It should be further noted that the first MAC address needs to satisfy the condition that it is the destination MAC address in the IP mapping table, and the source MAC address corresponding to it is the same as the destination MAC address in the feedback packet.
Therefore, by predefining a form of a pseudo IP address and intercepting the http data packet at the router link layer for modification, the destination MAC address and the destination IP address of the intercepted data packet are changed into the actual MAC address and the actual IP address of the router bridge network card, and the check code is recounted, so that the client can smoothly access the router homepage. In this way, the bi-directional communication from the client to the link layer of the router is performed by using the pseudo IP address, in this way, the conventional access manner by the IP address or domain name can be replaced, and the router homepage can be ensured to be successfully accessed regardless of whether the router works in the gateway or in the bridge mode.
The above embodiments represent only a few embodiments of the present invention, which are described in more detail and are not to be construed as limiting the scope of the present invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (5)
1. A method for securing a pseudo IP address to access a home page of a router, comprising:
the router generates a predefined pseudo IP address and a pseudo IP mapping table;
the client generates an http request to the predefined pseudo IP address and acquires an MAC address corresponding to the predefined pseudo IP address;
the client identifies whether the predefined pseudo IP address and the client IP address are the same network segment or not, and initiates the http request to the predefined pseudo IP address;
the router generates an interception instruction at a link layer, saves a source MAC address in an http data packet and a destination MAC address in the http data packet into the pseudo IP mapping table, and modifies the destination IP address in the http data packet and the destination MAC address;
the router intercepts the modified http data packet at the link layer, extracts a destination MAC address corresponding to a source MAC address in the pseudo IP mapping table, carries out changing operation, generates a feedback data packet and sends the feedback data packet to the client.
2. The method for accessing a router homepage by a fixed pseudo IP address according to claim 1, wherein in said step of generating an http request from said pseudo IP address by a client and obtaining a MAC address corresponding to said predefined pseudo IP address, further comprising the steps of:
if the predefined pseudo IP address is the same as the network segment of the IP address of the client, judging whether the MAC address corresponding to the predefined pseudo IP address can be queried from an ARP table, if yes, initiating the http request to the MAC address corresponding to the predefined pseudo IP address and the predefined pseudo IP address, if not, initiating an ARP request in a local area network by the client, acquiring a corresponding destination MAC address of the predefined pseudo IP address, and sending an ARP data packet to the router, and replying the ARP data packet by the router by using the MAC address of the router bridge network card, so that the client acquires the MAC address corresponding to the predefined pseudo IP address, saves the MAC address into the ARP table, and simultaneously, initiating an http request to the MAC address corresponding to the predefined pseudo IP address by the client to generate a data packet and sending the data packet to the router;
if the predefined pseudo IP address is different from the network segment of the client IP address, the client initiates the http request to a gateway MAC address and the predefined pseudo IP address.
3. The method for accessing a router homepage according to claim 1, wherein said modifying operation comprises the steps of:
and modifying the destination IP address and the destination MAC address in the http data packet into a network bridge IP address and a network bridge MAC address, and calculating a check value of the http data packet.
4. A method for accessing a router home page at a fixed pseudo IP address as claimed in claim 3 wherein the modifying operation is specifically the steps of:
comparing the destination MAC address in the http data packet with the source MAC address in the pseudo-IP mapping table, if the destination MAC address is the same, setting the destination MAC address in the pseudo-IP mapping table corresponding to the source MAC address in the pseudo-IP mapping table as a first destination MAC address, changing the source IP address in the http data packet into the predefined pseudo-IP address, changing the source MAC address of the http data packet into the first destination MAC address, and calculating the check value of the http data packet.
5. The method according to claim 4, wherein in the step the router intercepts the http packet in reply to the client request at the link layer, compares a destination MAC address in the http packet with a source MAC address in the pseudo IP mapping table, if the destination MAC address in the pseudo IP mapping table is the same, sets the source MAC address in the pseudo IP mapping table as a first destination MAC address, changes the source IP address in the http packet to the predefined pseudo IP address, changes the source MAC address of the http packet to the first destination MAC address, and calculates the check value of the http packet, further comprising the steps of:
the client acquires the feedback data packet to access the router homepage.
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