ML-Based Delay Attack Detection and Isolation for Fault-Tolerant Software-Defined Industrial Networks

. 2022 Sep 14;22(18):6958. doi: 10.3390/s22186958

Algorithm 1 DA-DIS detection and isolation algorithm

Input: Current Topology G = (Sw,E)

Output: Path/Backup path (P $_{i}$ ) between source-destination node pair

Contract_Observer(Sw $_{i}$ , Port P $_{i}$ )

Status Sw $_{m}$ = Check_Status_Change();

for all Sw $_{i}$ ∈ G do

if Check_Status_Change() == Sw $_{j}$ do

List P $_{i}$ = all_k_shortest_path(Sw $_{i}$ , Sw $_{j}$ );

if Sw $_{m}$ ∈ P $_{i}$ then

graph_list G $_{l}$ = graph.monitor.path - Sw $_{m}$ ;

Identify_attack( Sw $_{m}$ ,Port P $_{i}$ );

call k_shortest_path(Sw $_{i}$ , Sw $_{j}$ ) ;

else

return P $_{i}$ ;

end if

end for