Article ID: | iaor20133038 |
Volume: | 57 |
Issue: | 11-12 |
Start Page Number: | 2635 |
End Page Number: | 2646 |
Publication Date: | Jun 2013 |
Journal: | Mathematical and Computer Modelling |
Authors: | Yao Yu, Xie Xiao-wu, Guo Hao, Yu Ge, Gao Fu-Xiang, Tong Xiao-jun |
Keywords: | security |
Internet worm attacks reduce network security and cause economic losses. The use of a quarantine strategy is prominent in defending against worms, and it has been applied to various worm propagation models. Although theoretical analysis suggests that worms must get eliminated under quarantine, such a result does not appear in a real network. The time delay considered in this paper, which is caused by the time window of the intrusion detection system (IDS) that exists in the propagation system, is one of the main reasons for this. A worm propagation model with time delay under quarantine is constructed for practical application. The stability of the positive equilibrium and local Hopf bifurcation are discussed. By analysis, a critical value