ISCXInstallation Support Center of Expertise (US Army Corps of Engineers)
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Furthermore, Tables 6 and 7 report the results obtained from our proposed anomaly detection system on both ISCX 2012 IDS and DARPA 1999 datasets.
After this point, the performance of the proposed PCA-based TMAD dropped significantly to 40% and 97% for ISCX 2012 and DARPA1999 datasets, respectively.
However, while considering the ISCX 2012 IDS dataset, the proposed detection model accomplished lower performance.
10 the results showed that the proposed PCA-based model performed better using the DARPA 1999 dataset as compared to using the ISCX 2012 dataset.
11 shows the difference between the true and false positive rates generated by PCA-based TMAD, where k subset equal to 25 was attained (k=25 for ISCX 2012).
To demonstrate a better snapshot of the proposed PCA-based TMAD performance, we compared the proposed PCA-based TMAD against three state-of-the-art payload-based anomaly detection systems; TMAD, McPAD, and LDA-based GSAD using the same ISCX 2012 and DARPA 1999 datasets.
In the first experiment, we randomly divided the HTTP/GET traffic in ISCX 2012 dataset into two groups; 80% for training and 20% for testing.
The proposed method was assessed using HTTP packet payload of ISCX 2012 IDS [33] and DARPA 1999 datasets [34].