随着计算机网络的不断发展,校团信息化已成为我校发展的大趋势。但由于计算机网络具有联结形式多样性、终端分布不均匀性和网络的开放性、互连性等特征,致使网络易受黑客、怪客、恶意软件和其他不轨的攻击,所以网上信息的安全和保密是一个至关重要的问题。 With the continuous development of computer networks, school information has become the school’s development trend. However, because of the diversity of connection forms, terminal distribution unevenness, network openness and interconnectivity, the network is vulnerable to attacks by hackers, geeks, malicious software and other misdeeds. Therefore, the security of online information and Confidentiality is a crucial issue.