校园网网速变慢原因紧急调查中
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0"><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">近日,很多学生为校园网频出故障感到头疼不已。“网速慢得离谱,还老是掉线!”同学们心急之余免不了抱怨和疑问,甚至有人“被莫名其妙地封网”。为此,记者走访了网络中心故障维修处网管<?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:PersonName ProductID="严昭力" w:st="on">严昭力</st1:PersonName>老师和</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt">网络运行部的熊老师</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。</SPAN><SPAN lang=EN-US><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0"><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">熊老师解释,一般上网高峰期肯定会对网速有些影响,但不至于太离谱。如果慢到连网页都打不开,加上掉线,则极有可能是遭到了</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">ARP</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">网关欺骗攻击。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt">网速变慢的原因无外乎两个,一个是内部网络问题,校园网是个共享网络,只要其中有一位用户的电脑受到病毒攻击,其他电脑也会受到很大的影响;另外一个可能就是整个网络的状态都出了问题,</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">局域网内某些中毒的计算机会自动发起</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">ARP</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">欺骗,使其他计算机无法正常通信,或者监听被欺骗者的通信内容。当然,也不排除有人使用</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">ARP</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">欺骗的木马程序进行恶意攻击。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt">最近病毒非常猖獗,网上已经进行了不少关于病毒爆发的预报。对于这次状况,雄老师更偏向于认为是本校学生寝室楼栋内的局域网出了问题</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0"><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt">有很多同学喜欢上校内网,但最近校内网的速度实在令人不敢恭维,熊老师当场对校内网的问题进行了分析。据他分析,校内网并不属于教育网,应该隶属于中国电信或者网通。而我校的校园网只能保证同学们访问到教育网、电信或者网通的路径是顺畅的,而并不能保证数据流在网通或者电信内部的畅通。</SPAN><SPAN lang=EN-US style="mso-font-kerning: 0pt"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0"><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">当问及如何防御</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">ARP</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的欺骗攻击时,<st1:PersonName ProductID="严" w:st="on">严</st1:PersonName>老师建议使用</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">360</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">安全卫士。在防火墙设置中勾选</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">[</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">启用</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">ARP</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">欺骗防御</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">]</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">选项,绑定</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">ARP</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">静态地址,手动添加网关。此防御功能将对局域网中指定的计算机进行保护。</SPAN><SPAN lang=EN-US><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0"><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">就有些同学被封网的问题,<st1:PersonName ProductID="严" w:st="on">严</st1:PersonName>老师做出了如下解释:一些同学发现有人对自己的计算机攻击,便打电话给我们举报。我们会查出攻击方的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">MAC</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">地址,将其列入黑名单,这时攻击方就被封网了。但一般被封网的同学并不是恶意,而是自己的电脑中毒却不知晓,他们一联网就会影响其他计算机的速度,引发他人掉线。当然,被封网的同学也不用着急,<st1:PersonName ProductID="严" w:st="on">严</st1:PersonName>老师又解释到,“我们会要求他们清除病毒,只有全盘格式化,重装系统才能彻底杀毒,完后写个说明或申请交过来,我们会再开网。”但现在的问题是,有些同学为了上网就写个说明交差,并没有真的按要求杀了毒,加上还有人根本不知道自己电脑有问题,所以网络还会是有故障。我希望被封网的同学是真正杀了毒再来要求开网。同学们需要提高网络安全意识。</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0"><FONT size=3><st1:PersonName ProductID="从雄" w:st="on"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt">从熊</SPAN></st1:PersonName><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt">老师当前掌握的资料来看,校园网各个出口的流量、设备压力都很正常,所以,对于网速变慢的具体原因,网络运行部的工作人员们也感到非常奇怪。目前正在积极排查原因。因为网速变慢的症状有很多,比如访问网页变慢、看视频的速度变慢、下载的速度变慢等等,这些反常的背后都有着不同的原因,所以还需要一段时间进行具体的调查分析。请广大网络用户耐心等待。</SPAN></FONT><SPAN lang=EN-US style="mso-font-kerning: 0pt"><o:p></o:p></SPAN></P>
责任编辑:余文龙