CN101707608A - Method and device for automatically testing application layer protocol - Google Patents
Method and device for automatically testing application layer protocol Download PDFInfo
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Abstract
The embodiment of the invention relates to a method and a device for automatically testing an application layer protocol, wherein the method comprises the following steps of: resolving a schema file, and generating a messaging control sequence according to a message control logic in the schema file, wherein the messaging control sequence is used for controlling the message content in the schema file; according to the messaging control sequence, sending an application layer message containing the message content resolved from the schema file; receiving the application layer message processed by a tested device, and acquiring the processed message content from the processed application layer message; and detecting the processed message content according to a message detection rule in the schema file. The method and the device for automatically testing the application layer protocol realize comprehensive automatic tests on security gateway devices.
Description
Technical field
The present invention relates to technical field of measurement and test, particularly a kind of application layer protocol automated testing method and device.
Background technology
Along with popularizing of network, network security problem becomes the focus of concern day by day.These attacks based on the application layer content such as network attack, virus document are propagated, spam spreads unchecked have had a strong impact on carrying out of regular traffic.Operator, enterprise customer etc. press for corresponding apparatus and are on the defensive reducing loss, so various gateway device such as fire compartment wall, viral gateway, Mail Gateway etc. arise at the historic moment.These gateway devices generally all need through just may operate in the network safety in order to maintaining network after the test.
Traditional method of testing need be built real server and client side, and, judge whether success of test that this equipment under test is carried out by the test result (being the data content that server or client receive) after by equipment under test (being various gateway devices) of observed data artificially.The testing tool of equipment under test being tested at the application layer content is few in the market, and costs an arm and a leg.Testing tool mainly comprises: hardware based professional test instrument and based on the packet capturing playback instrument of software.
Two ports with the professional test instrument in the prior art directly link to each other with equipment under test, and equipment under test is tested.The professional test instrument mainly is the performance that is used to test indexs such as the throughput of equipment under test or newly-built connection to the method for testing of the application layer content by equipment under test.
The internal processes of this professional test instrument adopt the shortcoming of the technical scheme that hardware based professional test instrument tests equipment under test to be: owing to can not change flexibly, when this professional test instrument is dispatched from the factory, be customized, so the application layer protocol type that this professional test instrument is supported is fewer, the mutual message of application layer is fairly simple, thereby can easily not be transplanted in other applied environments; The sequence of client and the mutual message of service end only is question-response mode, the sequence of configuration interactive message neatly; Need the artificial correctness of checking that equipment under test is handled message.
Method of testing based on packet capturing playback instrument in the prior art is as follows: at first, utilize packet capturing software to obtain application layer traffic in the real network, i.e. and application layer message, and save as the packet capturing file of packet capturing file format; Then, read the packet capturing file, and revise parameters such as IP address in this packet capturing file with the application layer message in the real network that reset to grasp by equipment under test by packet capturing playback instrument; At last, pass through the result of the application layer message after equipment under test is handled by manual detection.The original application layer traffic content of flow content-dependent in the packet capturing file that this method produces.
In realizing process of the present invention, the inventor finds, when employing is tested equipment under test based on packet capturing playback instrument, though the application layer protocol type of supporting in the time of can solving the professional test instrument of above-mentioned hardware and test is few, the problem of the sequence of configuration interactive message neatly, promptly can obtain the application layer traffic in the real network, produce the needed application layer message of test simply.But, this application layer message only is the application layer message from the correct message format under the network in the operate as normal, do not possess the function that extracting client or service end are in the application layer message of the error message form that produces under the abnormal condition, and the application layer message of error message form also is the message that destroys network security, therefore it is still comprehensive inadequately to be somebody's turn to do test, and can not realize automatic test.
Summary of the invention
The embodiment of the invention provides a kind of application layer protocol automated testing method and device, to realize comprehensive, the detailed automatic test of security gateway equipment.
The embodiment of the invention provides a kind of application layer protocol automated testing method, comprising:
The interpretive model file, and according to the generation of the message control logic in described schema file message transmission control sequence, described message sends the message content that control sequence is used for controlling described schema file;
Send control sequence according to described message, send the application layer message that includes the described message content that parsing obtains from described schema file;
Application layer message after reception is handled via equipment under test, and the message content after obtaining the application layer message after described processing to handle;
According to the message content after the described processing of message audit rule detection in the described schema file.
The embodiment of the invention also provides a kind of application layer protocol automatic test device, comprising:
Parsing module is used for the interpretive model file, and generates message transmission control sequence according to the message control logic in the described schema file, and described message sends the message content that control sequence is used for controlling described schema file;
Sending module is used for sending control sequence according to described message, sends the application layer message that includes the described message content that parsing obtains from described schema file;
Receiver module is used to receive the application layer message via after the equipment under test processing, and the message content after obtaining the application layer message after described processing to handle;
Detection module is used for according to the message content after the described processing of message audit rule detection of described schema file.
By above technical scheme as can be known, the application layer protocol automated testing method and the device of the embodiment of the invention, can construct the application layer message of supporting multiple application layer protocol by the schema file that is provided with, simulate real application layer protocol reciprocal process, need not to build real application layer services device; The application layer message that constructs from the schema file of configuration can be the message of error message form, makes that test is more comprehensive; By the message audit rule that is provided with, can carry out fine-grained inspection to the application layer message, make that test is more detailed; And, because message content and predefined message audit rule after can will handling by host's main frame are carried out automatic matching check, need not manual operation, realized the automatic test mode.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of application layer protocol automated testing method first embodiment of the present invention;
Fig. 2 is the schematic flow sheet of application layer protocol automated testing method second embodiment of the present invention;
Fig. 3 is the structural representation of application layer protocol automatic test device first embodiment of the present invention;
Fig. 4 is the structural representation of application layer protocol automatic test device second embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention; technical scheme in the embodiment of the invention is clearly and completely described; obviously; described embodiment only is the present invention's part embodiment; rather than whole embodiment. based on the embodiment among the present invention; those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
For the clearer elaboration embodiment of the invention; at first the equipment under test that can be suitable for the described method of testing of the embodiment of the invention is simply introduced; the equipment under test of the embodiment of the invention can be security gateway---UTM (the Unified Threat Management of a new generation; be called for short UTM) equipment; UTM is a kind of content-based attack detecting gateway; can the depth perception message content and detect the data traffic of flowing through on it; the malice message is abandoned with the blocking-up attack; the abuse message is carried out current limliting with the protecting network bandwidth resources, possess network firewall; functions such as network invasion monitoring/defence and gateway anti-virus.For UTM equipment, need to pay close attention to it to HTML (Hypertext Markup Language) (Hyper Text TransferProtocol, be called for short HTTP), Simple Mail Transfer protocol (Simple Mail Transfer Protocol, be called for short SMTP), the content detection of post office protocol basic application layer protocols such as (Post Office Protocol are called for short POP3).When the application layer message between client and the service end passed through UTM equipment, according to configured strategy on the UTM equipment and application layer content of message, UTM equipment can produce following action: the clearance message; Blocking-up, dropping packets and to the client push warning page; Message stamped let pass after handling label; To letting pass behind the message deletion given content etc.Therefore, content for the UTM testing equipment mainly comprises: the result behind the inspection UTM device processes application layer message, for example: client sends after the request message, the inspection to end data that client is received by this UTM equipment (as receiving the result of the page after UTM handles that service end pushes inspection); And the inspection of the application layer message that sends by client that receives of service end (as blocking through UTM, label, declaration waits the message after the operation) etc.
Fig. 1 is the schematic flow sheet of application layer protocol automated testing method first embodiment of the present invention.As shown in Figure 1, comprising:
This schema file is a user-defined file, comprising information such as message content, message control logic, message audit rule are arranged.Select a main frame (operating system of this main frame can be Linux) as the host who produces the application layer message, abbreviate host's main frame in the embodiment of the invention as.This host's main frame is resolved schema file, generates message according to wherein message control logic and sends control sequence, is used for controlling the transmission rate, the time interval of the application layer message that is generated according to message content by host's main frame etc.
Concrete, in host's main frame, two cards of throwing the net can be set, and throw the net two and to set up an external path between card, like this, two one of throwing the net in the card can be used as transmit port, another Zhang Zuowei receiving port.The message that generates according to step 101 sends control sequence, can send the application layer message that comprises message content by transmit port.
Handle via an equipment under test by the application layer message that transmit port sends, this equipment under test comprises tested security gateway equipment, after equipment under test is handled this application layer message, can be sent to the receiving port of host's main frame, promptly the receiving port of host's main frame receives via the message content after the equipment under test processing.
Host's main frame receives via the application layer message after the equipment under test processing, message content after obtaining to handle, meeting and the message audit rule that parsing obtains from schema file are mated, and whether the application layer message that sends to before promptly checking according to the message audit rule in the equipment under test is turned back on host's main frame after correct the processing.
The application layer protocol automated testing method that present embodiment provides can simulate real application layer protocol reciprocal process by the self-defined of schema file and separate unit host main frame, need not to build real application layer services device, makes things convenient for the transplanting of test environment; And because message content and predefined message audit rule after can will handling by host's main frame are mated, therefore realized the automatic test mode, need not manual operation.
Fig. 2 is the schematic flow sheet of application layer protocol automated testing method second embodiment of the present invention.To be example with the http protocol below, introduce the basic skills of application layer protocol automatic test.As shown in Figure 2, comprising:
Virtual route on step 201, the initialization host main frame so that can communicate via described equipment under test between two physical network cards on described host's main frame, enters step 202.
Wherein, on host's main frame of this virtual route by the (SuSE) Linux OS of a generation application layer message at least 2 physical network cards being installed realizes.Conventional (SuSE) Linux OS is not supported to communicate by external network between two physical network cards, in order to realize the outside equipment under test of communication flows process of virtual client and service end, need make (SuSE) Linux OS virtual support router, concrete, can be by host's main frame kernel be carried out patch, make its virtual support routing forwarding (Virtual Routing Forwarding, be called for short VRF) function, such physical network card is as client, another physical network card realizes that as service end the application layer message that client and service end produce can arrive the opposite end later on by the equipment under test of external network.
The mode that this host's main frame obtains this schema file can have multiple, for example: can be prepattern file on host's main frame in advance, perhaps this host's main frame reads schema file from remote data base, under the both of these case, this schema file all can be the multiple different schema file that is applicable to multiple application layer protocol that writes in advance; Perhaps receive schema file by a control appliance editor, can think control appliance of the common configuration of this host's main frame, be used for the edit pattern file specially, can edit at any time, revise, delete, can self-defined neatly client and the message content of the mutual application layer message of service end and the logical relation between each application layer message.
Concrete, the information of preserving in this schema file has: the message content of the application layer message that customization client and service end are mutual and the logical relation between each application layer message.For example, according to the RFC standard of HTTP application layer protocol, the schema file of customization need comprise mutual header of HTTP and message content; In order to realize the logical relation of application layer message interaction, the schema file of employing XML form is described the reciprocal process of whole HTTP application layer protocol simultaneously.
Particularly, schema file is with＜package〉...＜/package〉represent that a mutual application layer message, " package " label inside comprise information such as the sequence number of message, direction, head, content.The explanation of each element can be with reference to the content that provides in the following form:
| Element | Content | Description of contents | Format description |
| ?package | Data message | Test serial number, direction, masterplate, head, content, logical attribute | ??<package?order＝″1″type＝″1″??templatemethod＝″Get″> |
| ?order | Test serial number | Positive integer greater than 1 | ??order＝″1″ |
| Element | Content | Description of contents | Format description |
| ?type | The |
1 expression client is to the server requests message, and 2 represent server to client end response messages | ??type＝″1″ |
| ?method | The http requesting method | Get, Post, client-requested methods such as Put | ??<method>GET</method> |
| ?url | The http request path | Request URI path | ??<url>/cgi-bin/create.pl</url> |
| ?version | Http version number | The version of http agreement | ??<version>HTTP/1.1</version> |
| ?elm | The header elements label | The title of containing element and value | ??<elm>??<key>Accept:</key>??<value>image/gif，image/x-xbitmap，??image/jpeg，image/pjpeg，??*/*</value>??</elm> |
| ?key | Element term | ??<key>Accept:</key> | |
| ?value | Element value | ??<value>image/gif，image/x-xbitmap，??image/jpeg，image/pjpeg，??*/*</value> | |
| ?content | Message content | Http message content information | <content order=" 0 " type=" 2 "><filename>Project is followed the tracks of .xls</filename></content> |
| ?attribute | Logical attribute | Http message logic control attribute | |
| ?timeout | Time-out time | The message waiting-timeout time | ??<timeout>20</timeout> |
| ?thinktime | Stand-by period | Message is waited for transmitting time | ??<thinktime>1000</thinktime> |
| ?integrity | Inspection policy | Fine granularity inspection policy, acquiescence judge whether transmission receives consistent | ??<integrity>1</integrity> |
In this step 203, host's main frame is resolved the schema file that obtains, and it is resolved to a kind of sequence of message that this host's main frame can be handled.
Concrete, can throw the net card as virtual client with one in host's main frame, another card of throwing the net is as the virtualization services end, and client and service end all possess transmitting-receiving message function, the corresponding client of transmit port in the present embodiment, receiving port corresponding with service end.
Comprise in the described schema file: message content, message control logic and message audit rule.Wherein, the message audit rule in the described schema file for example is the fine granularity inspection policy.The inspection rule to certain application layer message that defines in the schema file is an example to add deletion explanation rule in mail header, and the message audit rule definition in the schema file is as follows:
<integrity>
<elm>
<id>6</id>
<type>2</type>
<keyword>test@hacker.com</keyword>
<notification>The?email?message?has?been?deleted?because?it?is?not?comply
with?our?content?security?policy.</notification>
</elm>
</integrity>
Element representation in " Intergrity " label is the fine granularity inspection to the inspection rule of the application layer message after handling through outside equipment under test, is defaulted as to judge whether transmission/reception is consistent." elm " for checking regular label, one of a pair of elm label intermediate representation is checked rule, in a stage mode file, can add a plurality of inspection rules; " id " label represents to check the field of object; " type " label represents to handle type of action, comprises that this message is the message that is sent to service end by client, is still sent to the message of client by service end; " keyword " label is represented the keyword of needs coupling; " notification " label represents to handle the explanation of action.Host's main frame can be according to checking object and handling action, and whether the coupling keyword has added the deletion explanation for the mail of " test@hacker.com " in the inspection Mail Contents.Deletion explanation when detecting mail shows that equipment under test is correct to the processing of mail, and test result is for passing through.
After host's main frame is finished automation and is detected, can be with check result, for example: " by " or " failure ", output on the visible equipment of a certain user, thereby the user can judge intuitively whether this equipment under test (security gateway equipment) can be by test according to check result.
The application layer protocol automated testing method that present embodiment provides, utilize two mutual client and service ends of physical network cards difference simulation application layer protocol on host's main frame, and in conjunction with the schema file that is provided with, can be so that this host's main frame meets the basic reciprocal process of various application layer protocols, thereby make this host's main frame can support the automatic test of multiple application layer protocol, and can expand attainable application layer protocol, realize the height portability of automatic test environment; This automatic test scheme can also be carried out the fine granularity inspection to the message content that receives according to the message audit rule of schema file customization, and generates a test report that comprises check result, generates journal file and with convenient the result is observed; This self-defining schema file can also make equipment under test to detect unusual application message effectively by the unusual application layer message of customization.
Fig. 3 is the structural representation of application layer protocol automatic test device first embodiment of the present invention.As shown in Figure 3, this application layer protocol automatic test device comprises: parsing module 31, sending module 32, receiver module 33 and detection module 34.Wherein:
Parsing module 31 is used for the interpretive model file, and generates message transmission control sequence according to the message control logic in the described schema file, and described message sends the message content that control sequence is used for controlling described schema file;
Sending module 32 is used for sending control sequence according to the described message that parsing module 31 generates, and sends the application layer message that includes the described message content that parsing obtains from described schema file;
Receiver module 33 is used for receiving via the application layer message after the equipment under test processing by this receiver module 33, and the message content after obtaining the application layer message after described processing to handle;
Message content after the described processing that detection module 34, the message audit rule detection that is used for resolving the described schema file that obtains according to parsing module 31 receive from receiver module 33.
The application layer protocol automatic test device that present embodiment provides can be the host's main frame described in the said method embodiment, this application layer protocol automatic test device realizes that the specific descriptions of application layer protocol automated testing method see said method embodiment for details, do not repeat them here.
The application layer protocol automatic test device that present embodiment provides can simulate real application layer protocol reciprocal process by the self-defined of schema file and separate unit host main frame, need not to build real application layer services device, makes things convenient for the transplanting of test environment; And because message content and predefined message audit rule after can will handling by host's main frame are mated, therefore realized the automatic test mode, need not manual operation.
Fig. 4 is the structural representation of application layer protocol automatic test device second embodiment of the present invention.As shown in Figure 4, wherein description of the concrete function of parsing module 41, sending module 42, receiver module 43 and detection module 44 as above-mentioned application layer protocol automatic test device first embodiment are described in Fig. 3, do not repeat them here.In addition, can also comprise in this application layer protocol automatic test device:
Concrete, the described directly self-defined schema file on host's main frame of module 45 that is provided with also can obtain described schema file from remote data base, is arranged in this host's main frame after can also receiving the described schema file by a control appliance editor.
Daily record output module 48 is used for the journal file that output packet contains testing result.
Concrete, behind the message content after detection module 44 is according to the described processing of message audit rule detection in the described schema file, by daily record output module 48 output testing results.
The application layer protocol automatic test device that present embodiment provides can be the host's main frame described in the said method embodiment, this application layer protocol automatic test device realizes that the specific descriptions of application layer protocol automated testing method see said method embodiment for details, do not repeat them here.
The application layer protocol automatic test device that present embodiment provides, utilize two mutual client and service ends of physical network cards difference simulation application layer protocol on host's main frame, and in conjunction with the schema file that is provided with, can be so that this host's main frame meets the basic reciprocal process of various application layer protocols, thereby make this host's main frame can support the automatic test of multiple application layer protocol, and can expand attainable application layer protocol, realize the height portability of automatic test environment; This automatic test scheme can also be carried out the fine granularity inspection to the message content that receives according to the message audit rule of schema file customization, and generates a test report that comprises check result, generates journal file and with convenient the result is observed; This self-defining schema file can also make equipment under test to detect unusual application message effectively by the unusual application layer message of customization.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (9)
1. an application layer protocol automated testing method is characterized in that, comprising:
The interpretive model file, and according to the generation of the message control logic in described schema file message transmission control sequence, described message sends the message content that control sequence is used for controlling described schema file;
Send control sequence according to described message, send the application layer message that includes the described message content that parsing obtains from described schema file;
Application layer message after reception is handled via equipment under test, and the message content after obtaining the application layer message after described processing to handle;
According to the message content after the described processing of message audit rule detection in the described schema file.
2. application layer protocol automated testing method according to claim 1 is characterized in that, also comprises: obtain described schema file.
3. application layer protocol automated testing method according to claim 2 is characterized in that, describedly obtains described schema file and comprises:
Set in advance described schema file; Or
From remote data base, obtain described schema file; Or
Reception is by described schema file of the control appliance editor.
4. according to claim 1,2 or 3 described application layer protocol automated testing methods, it is characterized in that also comprise: output packet contains the journal file of testing result.
5. according to claim 1,2 or 3 described application layer protocol automated testing methods, it is characterized in that, before described transmission includes the application layer message of the described message content that parsing obtains from described schema file, also comprise: the virtual route that initialization can communicate via described equipment under test.
6. an application layer protocol automatic test device is characterized in that, comprising:
Parsing module is used for the interpretive model file, and generates message transmission control sequence according to the message control logic in the described schema file, and described message sends the message content that control sequence is used for controlling described schema file;
Sending module is used for sending control sequence according to described message, sends the application layer message that includes the described message content that parsing obtains from described schema file;
Receiver module is used to receive the application layer message via after the equipment under test processing, and the message content after obtaining the application layer message after described processing to handle;
Detection module is used for according to the message content after the described processing of message audit rule detection of described schema file.
7. application layer protocol automatic test device according to claim 6 is characterized in that, also comprises:
Module is set, is used to be provided with described schema file.
8. according to claim 6 or 7 described application layer protocol automatic test devices, it is characterized in that, also comprise:
The daily record output module is used for the journal file that output packet contains check result.
9. according to claim 6 or 7 described application layer protocol automatic test devices, it is characterized in that, also comprise:
Virtual routing module is used for the virtual route that initialization can communicate via described equipment under test.
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