EP3311546A1 - Einrichtung und verfahren zum kontrollieren einer datenübertragung in einem datennetzwerk - Google Patents
Einrichtung und verfahren zum kontrollieren einer datenübertragung in einem datennetzwerkInfo
- Publication number
- EP3311546A1 EP3311546A1 EP16747878.3A EP16747878A EP3311546A1 EP 3311546 A1 EP3311546 A1 EP 3311546A1 EP 16747878 A EP16747878 A EP 16747878A EP 3311546 A1 EP3311546 A1 EP 3311546A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- data
- detection means
- detecting means
- transmission
- detecting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000001514 detection method Methods 0.000 claims abstract description 39
- 239000003365 glass fiber Substances 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009420 retrofitting Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/14—Network architectures or network communication protocols for network security for detecting or protecting against malicious traffic
- H04L63/1408—Network architectures or network communication protocols for network security for detecting or protecting against malicious traffic by monitoring network traffic
- H04L63/1425—Traffic logging, e.g. anomaly detection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/12—Applying verification of the received information
- H04L63/123—Applying verification of the received information received data contents, e.g. message integrity
Definitions
- the safety responsibility lies with the signal boxes, in which personnel together with the safety devices installed there ensure safety.
- Route centers Radio Blog Center, RBC
- control units Element Control Computer, ECC
- Communication takes place here via data transmission, for example with Ethernet, Profibus or other technologies.
- VB Vehicle Bus
- a checksum value for example MD4
- a re-hash value is calculated for the transmitted data, which is compared with the transmitted Ardsum ⁇ menwert.
- this method does not identify whether the data transmitted has been deliberately and maliciously altered. A hidden manipulation would be possible if the transmitted checksum value is adapted to the changed data. It is the object of the present invention to provide a device and a method of the type mentioned, with which the security during data transmission can be increased.
- a device for Kontrol ⁇ lose a data transmission in a data network comprising a first detecting means for detecting the data point sent to a start, a second detecting means for detecting the receiving of an end point of data and a first with the Detection means and the second Erfas ⁇ means connected comparator, which is designed to compare the data detected by the first and second detection means.
- the object is achieved by a method for controlling a data transmission in a data network, in which the data sent at a starting point and the data received at an end point are respectively detected and compared with one another.
- the inventive solution has the advantage that it can be retrofitted to be ⁇ standing facilities, thereby improving the IT security of existing systems.
- the first detection means and the second detection means can each be designed to transmit the acquired data to the comparison device.
- This has the advantage that the verification of the collected data is done centrally in the comparator, which is particularly effective.
- the first detecting means and the second detecting means can in each case be formed to provide the collected data with a Se ⁇ quenz devis and / or time information.
- the first detection means and the second detection means may each be designed for a feedback-free detection of the transmitted data.
- an opening formed between the comparison means and the first detection means and / or the second detection means data connection can be, depending ⁇ wells at least in sections constructed as an Ethernet connection, or Internet connection.
- a data connection formed between the comparison device and the first detection means and / or the second detection means can each be designed as a glass fiber connection.
- data transmission between the starting point and the end point can be designed as an analog transmission or Digitalübertra ⁇ supply.
- the first detection means and / or the second detection means can each be designed as a network tap. This has the advantage that network tap are already available on the market at low cost and thereby the inventive solution can be provided cost ⁇ cost.
- the device may be formed separately from the data network.
- the data can each be detected without feedback.
- the invention can be so easily imple ⁇ ren.
- the data can be recorded separately from the data network.
- the acquired data can each be provided with a sequence number and / or time information and the matching data can be determined based on the sequence number and / or the time information and compared with each other.
- an alarm can be triggered if an inequality has been established when comparing the data. This has the advantage that, if necessary, can be reacted very quickly.
- a data network 1 here has a starting point 2 and a
- the inventive device 5 for controlling the data transmission 4 in the exemplary embodiment comprises a first detecting means 6, a second detecting means 7 and a comparator 8. It ⁇ acquisition means 6, 7 are each connected by a data link 9 to the comparing means. 8
- the first detection means 6 which is embodied as a network tap in the embodiment shown by way of example in the figure, detects the data 10 sent at the starting point 2.
- the data transmission 4 between the start point 2 and the end point 3 takes place in the exemplary case illustrated in FIG embodiment via an Ethernet connection 11.
- the first detection means 6 detects the starting point 2 ge ⁇ sent data 10 itself without using the data network 1 and to be connected to the data transfer. 4
- the second detecting means 7 is formed in the same manner as the first detecting means 6. With the difference that the second detection means 7 detects the data 10 received at the end point 3.
- the data 12 acquired by the detection means 6, 7, which are a copy of the data 10 of the data transmission 4, are respectively provided by the detection means 6, 7 with a sequence number and time information.
- the first detection means 6 and the second detection means 7 each have a clock 13 and a sequence number generator 14.
- the data 12 provided with the sequence number and the time information are transmitted by the detection means 6, 7 via the data connection 9 to the comparison device 8.
- the comparison device 8, which is formed, for example, by a microcontroller, determines the mutually matching acquired data 12 on the basis of their sequence number and their time information. It is sufficient to determine the appropriate data 12 based on one of them, the sequence number or the time information. These matched data 12 are compared and analyzed by the comparator 8.
- the comparison device 8 checks whether the data 10 sent at the starting point coincide with the data 10 received at the end point 3.
- various checking devices and analysis methods can be used by the comparing device 8. If, for example, a message-based transmission is monitored with checksum backup, an alerting of the comparison device 8 is triggered in the event of an inequality of the checksum values. However, if the checksum values at start point 2 and end point 3 are the same, but the message contents are different, it is a bit error due to the disturbance that the receiver system will discover and respond to according to specification.
- an analog transmission of the data transmission 4 it is possible, for example, to analyze the frequency and distribution of unequal detection values and to conclude either a random or a deliberate disturbance.
- the device 5 according to the invention for controlling the data transmission 4 is not connected directly to the data network 1 and the data transmission 4.
- the interception of the data 10 by the first and second detection means 6, 7 ge ⁇ happens completely without feedback.
- the data transmission 4 is therefore not influenced in any way. Therefore, in an implementation of the device 5 according to the invention in the data network 1 of systems already operating for years, no re-examination or regulatory approval is necessary.
- the function of the existing system is not affected and does not need to be changed.
- the control device 5 according to the invention is shown disjointly by the data network 1. Therefore, it does not have to meet any requirements according to, for example, the standard EN50159.
- the movement of such data ⁇ bond 9 between the detection means 6, 7 and the comparator 8 can be formed as an Ethernet connection, or even as an Internet connection, if this is possible in a reliable manner, without thereby the data network 1 would be compromised.
- the data link 9 is established on the basis of high data rate Ethernet.
- the transmission takes place in particular via glass fiber, since the distance between the detection means 6, 7 and the comparison device 8 here is greater than 50 m.
- the type of data transmission 4 is not of interest. Therefore, the data transmission 4 can be configured both as an analog transmission or as a digital transmission.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Hardware Design (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Small-Scale Networks (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015215370.3A DE102015215370A1 (de) | 2015-08-12 | 2015-08-12 | Einrichtung und Verfahren zum Kontrollieren einer Datenübertragung in einem Datennetzwerk |
| PCT/EP2016/067758 WO2017025316A1 (de) | 2015-08-12 | 2016-07-26 | Einrichtung und verfahren zum kontrollieren einer datenübertragung in einem datennetzwerk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3311546A1 true EP3311546A1 (de) | 2018-04-25 |
Family
ID=56609857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16747878.3A Withdrawn EP3311546A1 (de) | 2015-08-12 | 2016-07-26 | Einrichtung und verfahren zum kontrollieren einer datenübertragung in einem datennetzwerk |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3311546A1 (de) |
| DE (1) | DE102015215370A1 (de) |
| WO (1) | WO2017025316A1 (de) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7548515B2 (en) * | 2005-03-24 | 2009-06-16 | Agilent Technologies, Inc. | Apparatus for monitoring a network |
| US20070226804A1 (en) * | 2006-03-22 | 2007-09-27 | Method and system for preventing an unauthorized message |
-
2015
- 2015-08-12 DE DE102015215370.3A patent/DE102015215370A1/de not_active Withdrawn
-
2016
- 2016-07-26 WO PCT/EP2016/067758 patent/WO2017025316A1/de not_active Ceased
- 2016-07-26 EP EP16747878.3A patent/EP3311546A1/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| DE102015215370A1 (de) | 2017-02-16 |
| WO2017025316A1 (de) | 2017-02-16 |
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Legal Events
| Date | Code | Title | Description |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| 17P | Request for examination filed |
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| AK | Designated contracting states |
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| AX | Request for extension of the european patent |
Extension state: BA ME |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SIEMENS MOBILITY GMBH |
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| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| 17Q | First examination report despatched |
Effective date: 20181025 |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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| 18D | Application deemed to be withdrawn |
Effective date: 20190305 |