随着电缆和XDSI技术的成熟, 以及宽带的日益普及,客户面临着新的威胁和更大的危险。企业用户通过TI和ISDN业务到Internet的持续连接,长期以来已经成为计算机病毒和黑客攻击的首选对象。而与企业用户相比。家用和SOHO用户甚至还没有意识到危险的存在,也很少有人知道可以采取特殊的措施来对其进行保护。 宽带连接比拨号上网更加危险的原因有多种。 首先, “全时开放”连接产生了一个到用户机的开放且可见的入门,使用户机暴露于病毒和恶意代码未经授权的入侵和攻击之下。拨号上网的用户连接时都会分配到一个新的IP地 As cable and XDSI technologies mature and broadband becomes more widely available, customers are faced with new threats and greater risks. The continuous connection of enterprise users to the Internet through TI and ISDN services has long been the preferred target of computer viruses and hacking. Compared with business users. Household and SOHO users are not even aware of the danger and few know that special measures can be taken to protect them. There are several reasons why a broadband connection is more dangerous than dial-up. First, the “Full-time open” connection creates an open and visible entry to the user machine, exposing the user machine to unauthorized intrusion and attack by viruses and malicious code. Dial-up users are assigned a new IP address when connected