CN113472873A - Method for accessing router homepage by fixed pseudo IP address - Google Patents
Method for accessing router homepage by fixed pseudo IP address Download PDFInfo
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- CN113472873A CN113472873A CN202110713102.8A CN202110713102A CN113472873A CN 113472873 A CN113472873 A CN 113472873A CN 202110713102 A CN202110713102 A CN 202110713102A CN 113472873 A CN113472873 A CN 113472873A
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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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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention relates to the technical field of routers, and discloses a method for accessing a router homepage by fixing a pseudo IP address. In this manner, the bi-directional communication from the client to the link layer of the router is communicated using the pseudo-IP address, which can replace the conventional access via IP address or domain name, and can ensure successful access to the router home page regardless of whether the router is operating 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
At present, a router homepage needs to be accessed at a client side in the process of configuring a router, at present, most of the access is carried out through an IP address or a domain name, the IP address is for a bridge mode, the IP address of the router is dynamically allocated by the bridge router, at the moment, the IP address is unknown for a user, so the access in the bridge mode is difficult to carry out through the IP address, the domain name access is realized through DNS hijacking, but some browsers can judge whether domain name resolution is from authoritative domain name resolution or not, if not, the domain name resolution is directly rejected by the browsers, and the browsers must contain www.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a method for ensuring that a router homepage can be accessed through a fixed pseudo IP address of a pseudo IP mode to access the router homepage no matter what the router works in a gateway or the actual IP address of the router in a bridge mode.
The purpose of the invention is realized by the following technical scheme:
a method for accessing a router homepage by a fixed pseudo IP address, 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 is the same as the client IP address in the network segment, and initiates the http request to the predefined pseudo IP address;
s104, the router generates an interception instruction at a link layer, stores 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;
and S105, the router intercepts an http data packet which replies the client request at the link layer, extracts a destination MAC address corresponding to the source MAC address in the pseudo IP mapping table, changes the destination MAC address, 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 acquires 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 in an ARP table can be inquired, if so, initiating the http request to the MAC address corresponding to the predefined pseudo IP address and the predefined pseudo IP address, if not, initiating the ARP request in a local area network by the client, acquiring a target MAC address corresponding to the predefined pseudo IP address, 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 IP address and stores the MAC address in the ARP table, and meanwhile, initiating the http request to the MAC address corresponding to the predefined IP address by the client so as to generate a data packet and send the data packet to the router;
and if the network segments of the predefined pseudo IP address and the client IP address are different, 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 target IP address and the target 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 changing 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 in the pseudo IP mapping table is the same as the source MAC address in the pseudo IP mapping table, setting the source MAC address in the pseudo IP mapping table corresponding to the destination 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, modifying 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 the step of extracting the source MAC address and the pseudo IP address in the pseudo IP mapping table, generating a feedback data packet, and sending the feedback data packet to the client, the method further includes the following steps:
and the client acquires the feedback data packet so as to access the router homepage.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the invention relates to a method for accessing a router homepage by fixing a pseudo IP address, which changes a target MAC address and a target IP address of an intercepted data packet into an actual MAC address and an actual IP address of a router bridge network card by predefining a pseudo IP address form and intercepting an http data packet at a router link layer for modification, and then counts check codes again so as to enable a client to smoothly access the router homepage. In this manner, the bi-directional communication from the client to the link layer of the router is communicated using the pseudo-IP address, which can replace the conventional access via IP address or domain name, and can ensure successful access to the router home page regardless of whether the router is operating 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 needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a flowchart illustrating steps of a method for accessing a home page of a router by using a fixed pseudo IP address according to an embodiment of the present invention.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. 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 "secured 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 as used herein are for illustrative purposes only and do not represent the only embodiments.
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. As used herein, the term "and/or" 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 following steps:
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 is the same as the client IP address in the network segment, and initiates an http request to the predefined pseudo IP address;
s104, the router generates an interception instruction at a link layer, stores 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;
and S105, the router intercepts an http data packet which is requested by a reply client side of the http data packet at a link layer, extracts a destination MAC address corresponding to a source MAC address in the pseudo IP mapping table, changes the destination MAC address, generates a feedback data packet and sends the feedback data packet to the client side.
In order to better understand the technical idea of the method for accessing the router home page by fixing the pseudo IP address, 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 the staff, and is not changeable after setting, and the pseudo IP mapping table is used for storing the source MAC address and the destination MAC address of the http packet.
And 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 home page of the router, i.e. an http request, and obtains a MAC address corresponding to the predefined pseudo IP address to send the http request to the router.
Step S103, the client identifies whether the predefined pseudo IP address is the same as the client IP address in the network segment, 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 acquires 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 in an ARP (address resolution protocol) table can be inquired, if so, initiating an http (hyper text transport protocol) 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 target MAC address corresponding to the predefined pseudo IP address, sending an ARP (Address resolution protocol) data packet to a router, replying the ARP data packet by using the MAC address of a network bridge of the router so as to enable the client to acquire the MAC address corresponding to the predefined IP address and store the MAC address in the ARP table, and meanwhile, initiating an http request to the MAC address corresponding to the predefined IP address by the client so as to generate a data packet to be sent to the router;
and if the predefined pseudo IP address is different from the network segment of the client IP address, 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 judge whether the IP address of the client is the same as the network segment of the predefined pseudo IP address, if not, the client will look up the MAC address corresponding to the predefined pseudo IP address in its own APR table, if found, it will directly send 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 ARP table, the client will send the APR request in the local area network, obtain the destination MAC address corresponding to the predefined pseudo IP address, and send the ARP packet request to the router, after the router receives the ARP packet, the router replies to the client with its own MAC bridge address, so that the client obtains the MAC address corresponding to the predefined pseudo IP address, and records in its ARP table, and sends the http request to the MAC address and the predefined pseudo IP address, and then, the client generates an http data packet and sends the http data 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 will initiate an http request to the MAC address of the gateway and the predefined IP address.
And S104, the router generates an interception instruction in a link layer, stores 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 specifically includes the following steps:
and modifying the target IP address and the target 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.
The method includes the steps that a router generates an interception instruction at a link layer, intercepts an http data packet, and modifies the http data packet, firstly, a source MAC address in the http data packet and a destination MAC address in the http data packet are stored in a pseudo IP mapping table, then the destination IP address and the destination MAC address in the http data packet are respectively changed into a bridge IP address and a bridge MAC address, a check value of the http data packet is calculated after modification, and the http data packet is continuously sent after modification is finished, so that the http data packet can smoothly reach an http server of the router.
And step S105, the router intercepts an http data packet which is requested by a reply client side of the http data packet at a link layer, extracts a destination MAC address corresponding to a source MAC address in the pseudo IP mapping table, changes the destination MAC address, generates a feedback data packet and sends the feedback data packet to the client side.
Specifically, the changing operation specifically includes the following steps:
and 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 in the pseudo IP mapping table is the same as the source MAC address in the pseudo IP mapping table, setting the source MAC address in the http data packet corresponding to the destination 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, modifying the source MAC address of the http data packet into the first destination MAC address, and calculating a check value of the http data packet.
More specifically, after extracting the source MAC address and the pseudo IP address in the pseudo IP mapping table in the step, generating a feedback data packet, and sending the feedback data packet to the client, the method further includes the following steps:
the client acquires the feedback data packet to access the home page of the access router.
It should be noted that, the router intercepts a destination MAC address in an http data packet at a link layer and compares the destination MAC address with a source MAC address in a pseudo IP mapping table, if the destination MAC address is the same as the source MAC address in the pseudo IP mapping table, 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 a first destination MAC address, meanwhile, the intercepted http data packet is modified, the source IP address in the http data packet is changed into a predefined pseudo IP address, the source MAC address of the http data packet is changed into the first destination MAC address, a check value of the http data packet is recalculated, a feedback data packet is generated after the modification, the feedback data packet is sent to the client, and finally, the router homepage is accessed.
It should be noted that the first MAC address is required to satisfy the condition that it must be the destination MAC address in the IP mapping table, and its corresponding source MAC address is the same as the destination MAC address in the feedback packet.
Therefore, by predefining a pseudo IP address form and intercepting the http data packet at the router link layer for modification, the target MAC address and the target 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 then the check code is counted again, so that the client can smoothly access the router homepage. In this manner, the bi-directional communication from the client to the link layer of the router is communicated using the pseudo-IP address, which can replace the conventional access via IP address or domain name, and can ensure successful access to the router home page regardless of whether the router is operating in the gateway or in the bridge mode.
The above embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (5)
1. A method for accessing a router homepage by a fixed pseudo IP address, 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 is the same as the client IP address or not, and initiates the http request to the predefined pseudo IP address;
the router generates an interception instruction at a link layer, stores 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 a destination IP address in the http data packet and the destination MAC address;
and the router intercepts the http data packet which replies the client request at the link layer, extracts the destination MAC address corresponding to the source MAC address in the pseudo IP mapping table, changes the destination MAC address, generates a feedback data packet and sends the feedback data packet to the client.
2. The method for accessing the home page of the router by the fixed pseudo IP address according to claim 1, wherein 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 comprises 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 inquired from an ARP table, if so, initiating the http request to the MAC address corresponding to the predefined pseudo IP address and the predefined pseudo IP address, if not, initiating the ARP request in a local area network by the client, acquiring the destination MAC address corresponding to the predefined pseudo IP address, and sending an ARP data packet to the router, wherein the router replies the ARP data packet by using the MAC address of the router network card bridge so as to enable the client to acquire the MAC address corresponding to the predefined IP address and store the MAC address into the ARP table, and meanwhile, initiating the http request to the MAC address corresponding to the predefined IP address by the client so as to generate a data packet to be sent to the router;
and 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 the home page of the router by using the fixed pseudo IP address as claimed in claim 1, wherein the modifying operation is embodied as the following steps:
and modifying the target IP address and the target 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. The method for accessing the home page of the router by using the fixed pseudo IP address as claimed in claim 3, wherein the change operation is embodied by the following steps:
comparing a destination MAC address in the http data 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 as the source MAC address in the pseudo IP mapping table, setting the source MAC address in the http data packet corresponding to the destination 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, modifying 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 said step, said router intercepts said http packet in reply to said client request at said link layer, compares a destination MAC address in said http packet with a source MAC address in said pseudo IP mapping table, if they are the same, sets the source MAC address in the pseudo IP mapping table corresponding to the destination MAC address in said pseudo IP mapping table as a first destination MAC address, changes the source IP address in said http packet to said predefined pseudo IP address, modifies the source MAC address of said http packet to said first destination MAC address, and calculates said check value of said http packet, further comprising the steps of:
and the client acquires the feedback data packet to access the router homepage.
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