[ovs-dev] Is the Open Flow switch able to calculate the gap of sequence number

[Soliman Awad Alshra´a Abdullah TU Ilmenau]

Dear All,
First of all , I apologize if I send my inquiry to the wrong Email list

I have read in some publication


OpenFLow switch is able to keep track of the sequence number of each traffic 
flow to detect MAC spoofing attack. Upon reception of a frame, the algorithm 
calculates the gap G between the sequence number of the current frame and that 
of the last frame received from the same source address. If G = 0, the current 
frame is considered as a re-transmitted frame, while if G = 1 or G = 2, the 
current frame is considered the right one. But, if the gap between the current 
frame and previous frame is in between 3 and 4096, then it is considered an 
abnormal sequence number.

In my case, I use Ryu Controller and I would like to do the same work, where 
the switch sends the alert to the controller after the switch detects the gap.



M.Sc Abdullah Soliman
Technische Universität Ilmenau
Fakultät für Elektrotechnik und Informationstechnik
Fachgebiet Kommunikationsnetze
Besucheradresse:
Helmholtzplatz 2
98693 Ilmenau

Postadresse:
PF 10 05 65
98684 Ilmenau


Telefon

+49 3677 69-2698

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abdullah.alsh...@tu-ilmenau.de<mailto:jochen.se...@tu-ilmenau.de>
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www.tu-ilmenau.de/it-kn<https://www.tu-ilmenau.de/it-kn>

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