CN117376179A - Method, system, equipment and medium for filtering GRE protocol message - Google Patents
Method, system, equipment and medium for filtering GRE protocol message Download PDFInfo
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- 238000013461 design Methods 0.000 abstract description 3
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/02—Capturing of monitoring data
- H04L43/028—Capturing of monitoring data by filtering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
- H04L47/2483—Traffic characterised by specific attributes, e.g. priority or QoS involving identification of individual flows
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Abstract
The invention discloses a method, a system, equipment and a medium for filtering GRE protocol messages, which relate to the technical field of message filtering and comprise the following steps: acquiring a network message to be filtered, wherein the network message comprises a network inner layer message and a network outer layer message; determining the initial position of a target message layer in the network outer layer message, and obtaining the identification result of whether the target message layer contains GRE messages; if the identification result is that the GRE message is contained, executing a preset filtering mode and obtaining the GRE message in the network message, increasing the message filtering support protocol type of the network processor, improving the flexibility, accurately extracting the appointed field in the GRE message, and finishing the verification and marking by combining elements of other layers in the message to realize more requirements; meanwhile, when the GRE message is filtered, the performance of the network processor under the complex protocol is accelerated by adopting a flow design without blocking.
Description
Technical Field
The invention relates to the technical field of message filtering, in particular to a method, a system, equipment and a medium for filtering GRE protocol messages.
Background
The network message filtering is a flow monitoring and control technology based on an application layer, but protocols of the network message are numerous, the complexity is inconsistent, and the performance requirement of the message filtering equipment is further increased; the GRE protocol has complex format, and the message protocols supported before and after are numerous, and the GRE protocol is to be developed aiming at the mode of filtering GRE messages.
Disclosure of Invention
The invention aims to provide a method, a system, equipment and a medium for filtering GRE protocol messages, so as to solve the problems in the background technology.
The technical aim of the invention is realized by the following technical scheme:
in a first aspect, an embodiment of the present application provides a method for filtering a GRE protocol packet, including the following steps:
acquiring a network message to be filtered, wherein the network message comprises a network inner layer message and a network outer layer message;
determining the initial position of a target message layer in the network outer layer message, and obtaining the identification result of whether the target message layer contains GRE messages;
if the identification result is that the GRE message is contained, executing a preset filtering mode and obtaining the GRE message in the network message.
The beneficial effects of the invention are as follows: in the scheme, the message filtering support protocol type of the network processor can be increased by utilizing the proposed filtering mode, the flexibility is improved, the appointed field in the GRE message is accurately extracted, the verification and marking can be completed by combining elements of other layers in the message, and more requirements are met; meanwhile, when the GRE message is filtered, the performance of the network processor under the complex protocol is accelerated by adopting a flow design without blocking.
On the basis of the technical scheme, the invention can be improved as follows.
Further, the method further comprises the steps of:
and obtaining the end position of the GRE message according to the GRE message, and determining the end position of the GRE message as the boundary position between the network outer layer message and the network inner layer message.
The beneficial effects of adopting the further scheme are as follows: the boundary position between the network outer layer message and the network inner layer message in the network message can be found out, so that the processing of the network inner layer message is facilitated.
Further, the network outer layer message comprises a first target layer, a second target layer and a target message layer which are sequentially arranged; determining a starting position of a target message layer in a network outer layer message comprises:
obtaining a message type of a first target layer, and obtaining an end position of the first target layer according to the message type of the first target layer;
determining the ending position of the first target layer as the starting position of the second target layer, obtaining the ending position of the second target layer according to the message type of the second target layer, and taking the ending position of the second target layer as the starting position of the target message layer.
The beneficial effects of adopting the further scheme are as follows: and finally obtaining the matching result of the GRE part in each message through step-by-step processing, and finishing multi-layer message filtering processing.
Further, the filtering mode specifically includes:
taking the initial position of the target message layer as the initial position of the head layer in the GRE message, and obtaining the end position of the head layer;
taking the end position of the header layer as the initial position of the data layer in the GRE message, and scanning beat by beat from the initial position of the data layer to obtain a plurality of continuously arranged variable-length loads in the data layer, wherein the variable-length loads comprise data heads and data loads;
and determining the end position of the data head in the last variable-length load as the end position of the GRE message until the length of the data load in the last variable-length load is zero.
The beneficial effects of adopting the further scheme are as follows: in the scheme, the boundary of the GRE message is determined by beat, so that the filtering of the message is ensured not to be blocked, and the overall system performance is improved; the defects of limited filtering range and inflexible filtering in the existing method are overcome; by determining the limit of each GRE part, complex and variable-length network messages containing GREs can be filtered, so that the requirements of large bandwidth and flexibility of network message filtering are met.
In a second aspect, an embodiment of the present application provides a system for filtering GRE protocol packets, which is applied to a method for filtering GRE protocol packets in any one of the first aspect, including:
the first module is used for acquiring a network message to be filtered, wherein the network message comprises a network inner layer message and a network outer layer message;
the second module is used for determining the initial position of a target message layer in the network outer layer message and obtaining the identification result of whether the target message layer contains GRE messages or not;
and the third module is used for executing a preset filtering mode and obtaining the GRE message in the network message if the identification result is that the GRE message is contained.
Further, the system further includes:
and a fourth module, configured to obtain an end position of the GRE packet according to the GRE packet, and determine the end position of the GRE packet as a boundary position between the network outer layer packet and the network inner layer packet.
Further, the network outer layer message comprises a first target layer, a second target layer and a target message layer which are sequentially arranged; a second module, comprising:
the first sub-module is used for acquiring the message type of the first target layer and acquiring the end position of the first target layer according to the message type of the first target layer;
the second sub-module is used for determining the ending position of the first target layer as the starting position of the second target layer, obtaining the ending position of the second target layer according to the message type of the second target layer, and taking the ending position of the second target layer as the starting position of the target message layer;
further, the third module includes:
a fourth sub-module, configured to take a start position of the target packet layer as a start position of a header layer in the GRE packet, and obtain an end position of the header layer;
a fifth sub-module, configured to take the end position of the header layer as the start position of the data layer in the GRE packet, and perform beat-to-beat scanning from the start position of the data layer to obtain a plurality of continuously arranged variable length loads in the data layer, where the variable length loads include a data header and a data load;
and a sixth sub-module, configured to determine an end position of the data header in the last variable length load as an end position of the GRE packet until the length of the data load in the last variable length load is zero.
In a third aspect, embodiments of the present application provide an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method of any one of the first aspects when executing the computer program.
In a fourth aspect, a non-transitory computer-readable storage medium stores computer instructions that cause a computer to perform the method of any of the first aspects.
Compared with the prior art, the invention has at least the following beneficial effects:
in the application, the proposed filtering mode can be used for increasing the message filtering support protocol types of the network processor, improving the flexibility, accurately extracting the designated fields in the GRE message, completing the verification and marking by combining the elements of other layers in the message, and realizing more requirements; meanwhile, when the GRE message is filtered, the performance of the network processor under the complex protocol is accelerated by adopting a flow design without blocking.
In the method, the boundary of the GRE message is determined through beat, so that the filtering of the message is ensured not to be blocked, and the overall system performance is improved; the defects of limited filtering range and inflexible filtering in the existing method are overcome; by determining the limit of each GRE part, complex and variable-length network messages containing GREs can be filtered, so that the requirements of large bandwidth and flexibility of network message filtering are met; and finally obtaining the matching result of the GRE part in each message through step-by-step processing, completing multi-layer message filtering processing, and simultaneously finding out the boundary position between the outer layer message and the inner layer message in the network message so as to facilitate the processing of the inner layer message.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention. In the drawings:
FIG. 1 is a flow chart of a filtering method according to an embodiment of the present invention;
FIG. 2 is a block diagram illustrating the connection of a filtration system in accordance with an embodiment of the present invention;
fig. 3 is a schematic connection diagram of an electronic device according to an embodiment of the invention.
Description of the embodiments
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the embodiments of the present invention, "plurality" means at least 2.
Example 1: the embodiment provides a method for filtering GRE protocol messages, as shown in fig. 1, comprising the following steps:
s1, acquiring a network message to be filtered, wherein the network message comprises a network inner layer message and a network outer layer message.
The network message is a network message, wherein the received network message comprises an outer layer message and an inner layer message, namely the network inner layer message and the network outer layer message, and the network inner layer message is also called a tunnel layer; for the GRE message, namely the message data of the GRE protocol, the GRE message exists in the network outer layer message, and the end position of the GRE message is the interval position between the network inner layer message and the network outer layer message, so that the interface between the network inner layer message and the network outer layer message can be found out when the GRE message is filtered through the scheme in the application, and the processing of the network inner layer message is facilitated.
S2, determining the initial position of a target message layer in the network outer layer message, and obtaining the identification result of whether the target message layer contains GRE messages.
Specifically, the network outer layer message also includes multiple layers of messages, the multiple layers of messages are arranged in sequence, and the GRE message exists in the multiple layers of messages.
Optionally, the network outer layer packet includes a first target layer, a second target layer, and a target packet layer that are sequentially arranged, where the first target layer, the second target layer, and the target packet layer are the above-mentioned multi-layer packet, that is, an L2 layer, an L3 layer, and an L4 layer in sequence, in the first target layer, a packet protocol is one of ETH, VLAN, QINQ, etc., in the second target layer, a leopard stripe protocol is one of IPV4, IPV6, etc., in the target packet layer, a packet protocol is one of TCP, UDP, GRE, etc., so when a GRE packet exists, the GRE packet must exist in the L4 layer, that is, in the target packet layer.
Optionally, determining the starting position of the target message layer in the network outer layer message includes:
obtaining a message type of a first target layer, and obtaining an end position of the first target layer according to the message type of the first target layer;
determining the ending position of the first target layer as the starting position of the second target layer, obtaining the ending position of the second target layer according to the message type of the second target layer, and taking the ending position of the second target layer as the starting position of the target message layer.
The message protocols in the first target layer and the second target layer can be obtained through the prior art, and according to the message types, the starting time slice, the ending time slice, the starting offset, the ending offset and the like of each layer can be clearly reached, namely the starting and ending positions of each layer; and the first target layer, the second target layer and the target message layer are arranged and connected at one time, and when the ending position of the second target layer is found, the starting position of the target message layer is obtained.
And S3, if the identification result is that the GRE message is contained, executing a preset filtering mode and obtaining the GRE message in the network message.
When the GRE message is detected or identified to be in the target message layer, the GRE message is filtered in the filtering mode in the scheme; of course, when the GRE message is not identified in the target message layer, the network message is acquired again.
Optionally, the filtering mode specifically includes:
taking the initial position of the target message layer as the initial position of the head layer in the GRE message, and obtaining the end position of the head layer;
taking the end position of the header layer as the initial position of the data layer in the GRE message, and scanning beat by beat from the initial position of the data layer to obtain a plurality of continuously arranged variable-length loads in the data layer, wherein the variable-length loads comprise data heads and data loads;
and determining the end position of the data head in the last variable-length load as the end position of the GRE message until the length of the data load in the last variable-length load is zero.
For GRE messages in a target message layer, each beat is connected in sequence, and the bandwidth of each beat can be obtained; in each beat of the GRE message, a plurality of variable-length loads are included in sequence; for each variable length load, the data head and the data load are arranged in sequence, the length of the data head is fixed 32 bits, the length of the data load is variable, the variable length load in each beat can be obtained through scanning beat by beat, when the length of the data load of the variable length load is scanned to be 0, the end of the GRE message is indicated, and the end position of the data head in the last variable length load is determined as the end position of the GRE message.
Specifically, if the bandwidth of the message is 128bps, that is, each beat has 128 bits of data, after the whole head of the GRE protocol is removed, starting from the first variable length load, the first variable length load is 32 bits, then the first variable length load is the data load of the first variable length load, for example, 8bits, then the total length of the first variable length load is 40 bits, then the next variable length load, when the first beat scanning is finished, if the data load is the shortest, that is, 8bits, the length of the first three variable length loads is 40 bits, then the beat is still 8bits, the above beat-by-beat scanning means that the remaining 8bits are accessed into the second beat scanning, so for the 4 th variable length load, the data head of the 4 th variable length load is 32 bits, that is, the remaining 8bits in the first beat and the 24 bits starting from the starting position in the second beat are included, so that when the boundary of the GRE message is determined, the whole filtering performance of the message is ensured, and the system performance is improved; the defects of limited filtering range and inflexible filtering in the existing method are overcome; by determining the limit of each GRE part, complex and variable-length network messages containing GREs can be filtered, so that the requirements of large bandwidth and flexibility of network message filtering are met; similarly, when the data load of each variable-length load changes, the beat-to-beat scanning mode is adopted until the position with the length of 0 of the data load is scanned.
Optionally, the method further comprises:
s4, obtaining the end position of the GRE message according to the GRE message, and determining the end position of the GRE message as the boundary position between the network outer layer message and the network inner layer message.
The end position of the GRE message is the boundary position between the network outer layer message and the network inner layer message, and the network outer layer message and the network inner layer message can be separated through the boundary position, so that the network inner layer message can be conveniently processed and applied.
Example 2: the embodiment of the application provides a filtering system for a GRE protocol packet, which is applied to the filtering method for the GRE protocol packet in any one of embodiment 1, as shown in fig. 2, and includes:
the first module is used for acquiring a network message to be filtered, wherein the network message comprises a network inner layer message and a network outer layer message.
And the second module is used for determining the initial position of the target message layer in the network outer layer message and obtaining the identification result of whether the target message layer contains the GRE message.
Optionally, the network outer layer message includes a first target layer, a second target layer and a target message layer which are sequentially arranged; a second module, comprising:
the first sub-module is used for acquiring the message type of the first target layer and obtaining the end position of the first target layer according to the message type of the first target layer.
And the second sub-module is used for determining the ending position of the first target layer as the starting position of the second target layer, obtaining the ending position of the second target layer according to the message type of the second target layer, and taking the ending position of the second target layer as the starting position of the target message layer.
And the third module is used for executing a preset filtering mode and obtaining the GRE message in the network message if the identification result is that the GRE message is contained.
Optionally, the third module includes:
a fourth sub-module, configured to take a start position of the target packet layer as a start position of a header layer in the GRE packet, and obtain an end position of the header layer;
a fifth sub-module, configured to take the end position of the header layer as the start position of the data layer in the GRE packet, and perform beat-to-beat scanning from the start position of the data layer to obtain a plurality of continuously arranged variable length loads in the data layer, where the variable length loads include a data header and a data load;
and a sixth sub-module, configured to determine an end position of the data header in the last variable length load as an end position of the GRE packet until the length of the data load in the last variable length load is zero.
Optionally, the system further includes:
and a fourth module, configured to obtain an end position of the GRE packet according to the GRE packet, and determine the end position of the GRE packet as a boundary position between the network outer layer packet and the network inner layer packet.
Example 3: an embodiment of the present application provides an electronic device, as shown in fig. 3, including a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor executes the computer program to implement the method of any one of embodiment 1.
Example 4: a non-transitory computer readable storage medium storing computer instructions that cause a computer to perform the method of any one of embodiment 1.
The foregoing detailed description of the invention has been presented for purposes of illustration and description, and it should be understood that the invention is not limited to the particular embodiments disclosed, but is intended to cover all modifications, equivalents, alternatives, and improvements within the spirit and principles of the invention.
Claims (10)
1. The filtering method of the GRE protocol message is characterized by comprising the following steps:
acquiring a network message to be filtered, wherein the network message comprises a network inner layer message and a network outer layer message;
determining the initial position of a target message layer in the network outer layer message, and obtaining the identification result of whether the target message layer contains GRE messages;
and if the identification result is that the GRE message is contained, executing a preset filtering mode and obtaining the GRE message in the network message.
2. The method for filtering GRE protocol messages according to claim 1, further comprising:
and obtaining the end position of the GRE message according to the GRE message, and determining the end position of the GRE message as the boundary position between the network outer layer message and the network inner layer message.
3. The method for filtering GRE protocol messages according to claim 1, wherein said network outer layer messages comprise a first target layer, a second target layer, and a target message layer arranged in sequence; the determining the starting position of the target message layer in the network outer layer message comprises the following steps:
acquiring the message type of the first target layer, and acquiring the end position of the first target layer according to the message type of the first target layer;
determining the ending position of the first target layer as the starting position of a second target layer, obtaining the ending position of the second target layer according to the message type of the second target layer, and taking the ending position of the second target layer as the starting position of the target message layer.
4. The method for filtering GRE protocol messages according to claim 1, wherein the filtering mode is specifically as follows:
taking the initial position of the target message layer as the initial position of the head layer in the GRE message, and obtaining the end position of the head layer;
taking the end position of the header layer as the start position of a data layer in the GRE message, and scanning beat by beat from the start position of the data layer to obtain a plurality of continuously arranged variable length loads in the data layer, wherein the variable length loads comprise data heads and data loads;
and determining the end position of the data head in the last variable-length load as the end position of the GRE message until the length of the data load in the last variable-length load is zero.
5. A GRE protocol message filtering system, applied to the method for filtering GRE protocol messages according to any one of claims 1 to 4, comprising:
the first module is used for acquiring a network message to be filtered, wherein the network message comprises a network inner layer message and a network outer layer message;
the second module is used for determining the initial position of a target message layer in the network outer layer message and obtaining the identification result of whether the target message layer contains GRE messages or not;
and the third module is used for executing a preset filtering mode and obtaining the GRE message in the network message if the identification result is that the GRE message is contained.
6. The system for filtering GRE protocol messages according to claim 5, further comprising:
and a fourth module, configured to obtain an end position of the GRE packet according to the GRE packet, and determine the end position of the GRE packet as a boundary position between the network outer layer packet and the network inner layer packet.
7. The system of claim 5, wherein the network outer layer message comprises a first target layer, a second target layer, and a target message layer arranged in sequence; the second module includes:
the first sub-module is used for acquiring the message type of the first target layer and acquiring the end position of the first target layer according to the message type of the first target layer;
and the second sub-module is used for determining the ending position of the first target layer as the starting position of a second target layer, obtaining the ending position of the second target layer according to the message type of the second target layer, and taking the ending position of the second target layer as the starting position of the target message layer.
8. The system of claim 5, wherein the third module comprises:
a fourth sub-module, configured to take a start position of the target packet layer as a start position of a header layer in the GRE packet, and obtain an end position of the header layer;
a fifth sub-module, configured to take an end position of the header layer as a start position of a data layer in the GRE packet, and perform beat-to-beat scanning from the start position of the data layer, to obtain a plurality of continuously arranged variable length loads in the data layer, where the variable length loads include a data header and a data load;
and a sixth sub-module, configured to determine, until the length of the data payload in the last variable length payload is zero, the end position of the data header in the last variable length payload as the end position of the GRE packet.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method of any one of claims 1-4 when the computer program is executed by the processor.
10. A non-transitory computer readable storage medium storing computer instructions that cause a computer to perform the method of any one of claims 1-4.
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| CN202311643359.6A CN117376179A (en) | 2023-12-04 | 2023-12-04 | Method, system, equipment and medium for filtering GRE protocol message |
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| CN202311643359.6A CN117376179A (en) | 2023-12-04 | 2023-12-04 | Method, system, equipment and medium for filtering GRE protocol message |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103152254A (en) * | 2013-02-01 | 2013-06-12 | 汉柏科技有限公司 | Generic route encapsulation tunnel message forwarding method and system |
| WO2014026571A1 (en) * | 2012-08-14 | 2014-02-20 | 中兴通讯股份有限公司 | Method and device for sending generic routing encapsulation tunnel message |
| CN109302354A (en) * | 2018-10-26 | 2019-02-01 | 盛科网络（苏州）有限公司 | A kind of chip implementing method and device of UDP encapsulation GRE message |
| CN109787878A (en) * | 2017-11-10 | 2019-05-21 | 北京华为数字技术有限公司 | A kind of tunnel links detection method and relevant device |
| WO2021093641A1 (en) * | 2019-11-13 | 2021-05-20 | 中兴通讯股份有限公司 | Message transmission method and system, vpn device at sending end and gre splicing device |
| CN113300929A (en) * | 2021-04-15 | 2021-08-24 | 新华三信息安全技术有限公司 | Message forwarding method and device, electronic equipment and storage medium |
| CN113824706A (en) * | 2021-09-10 | 2021-12-21 | 杭州迪普信息技术有限公司 | Message analysis method and network equipment |
-
2023
- 2023-12-04 CN CN202311643359.6A patent/CN117376179A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014026571A1 (en) * | 2012-08-14 | 2014-02-20 | 中兴通讯股份有限公司 | Method and device for sending generic routing encapsulation tunnel message |
| CN103152254A (en) * | 2013-02-01 | 2013-06-12 | 汉柏科技有限公司 | Generic route encapsulation tunnel message forwarding method and system |
| CN109787878A (en) * | 2017-11-10 | 2019-05-21 | 北京华为数字技术有限公司 | A kind of tunnel links detection method and relevant device |
| CN109302354A (en) * | 2018-10-26 | 2019-02-01 | 盛科网络（苏州）有限公司 | A kind of chip implementing method and device of UDP encapsulation GRE message |
| WO2021093641A1 (en) * | 2019-11-13 | 2021-05-20 | 中兴通讯股份有限公司 | Message transmission method and system, vpn device at sending end and gre splicing device |
| CN113300929A (en) * | 2021-04-15 | 2021-08-24 | 新华三信息安全技术有限公司 | Message forwarding method and device, electronic equipment and storage medium |
| CN113824706A (en) * | 2021-09-10 | 2021-12-21 | 杭州迪普信息技术有限公司 | Message analysis method and network equipment |
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