Abstract:

With the development of the Internet, more and more people perform the payment and transfer procedures in life and work at home by browsing Web sites or clients. Also with the increase of network frauds and other criminal cases, malicious Web site becomes the main means of fraud. SDN network has the ability to flexibly deploy cyber sources ,which can be used to prevent the malicious sites very well. This paper proposes a malicious Web site protection model based on OpenFlow which processes DNS access requests from client on Floodlight controller by using the characteristic that control and forwarding is separated in SDN, which ensures that the normal Web sites can be accessed on the premise of the malicious Web sites interception.

Key words: malicious Web site, SDN, OpenFlow, DNS