Visible to the public Biblio

Filters: Author is Wu, Wenfei  [Clear All Filters]
2017-10-19
Wu, Wenfei, Zhang, Ying, Banerjee, Sujata.  2016.  Automatic Synthesis of NF Models by Program Analysis. Proceedings of the 15th ACM Workshop on Hot Topics in Networks. :29–35.

Network functions (NFs), like firewall, NAT, IDS, have been widely deployed in today’s modern networks. However, currently there is no standard specification or modeling language that can accurately describe the complexity and diversity of different NFs. Recently there have been research efforts to propose NF models. However, they are often generated manually and thus error-prone. This paper proposes a method to automatically synthesize NF models via program analysis. We develop a tool called NFactor, which conducts code refactoring and program slicing on NF source code, in order to generate its forwarding model. We demonstrate its usefulness on two NFs and evaluate its correctness. A few applications of NFactor are described, including network verification.

2017-09-15
Song, Linhai, Huang, Heqing, Zhou, Wu, Wu, Wenfei, Zhang, Yiying.  2016.  Learning from Big Malwares. Proceedings of the 7th ACM SIGOPS Asia-Pacific Workshop on Systems. :12:1–12:8.

This paper calls for the attention to investigate real-world malwares in large scales by examining the largest real malware repository, VirusTotal. As a first step, we analyzed two fundamental characteristics of Windows executable malwares from VirusTotal. We designed offline and online tools for this analysis. Our results show that malwares appear in bursts and that distributions of malwares are highly skewed.