除了投訴之外，怎么才能更有效地阻止聯(lián)通的劫持呢？最近深受聯(lián)通的廣告劫持困擾，一開始是在頁面的左下角彈出虛假廣告，這直接導致G-zip壓縮的頁面變成下載、頁面內(nèi)的javascript失效或-ttps連接中斷，必須重新-新才可訪問。現(xiàn)在劫持手段變成一個jsp程序了，即劫持到一個他專門的廣告頁面上，等待幾秒之后再跳轉到原來的頁面上，這使得需要提交表格信息的頁面提交失敗，十分的耗時。已知這不是電腦-引起的，因為包括iPad和iP-one通過safari訪問-ttp協(xié)議的網(wǎng)站都會出現(xiàn)這種情況。查詢網(wǎng)頁源代碼，劫持的頁面所在的服務器位于221.204.213.27而對于221.204.213.27這個-來看，查詢WHOIS信息如下WHOIS Results for：221.204.213.27% [w-ois.apnic.net node-4]% W-ois data copyrig-t terms apnic.net/db/dbcopy...inetnum: 221.204.0.0 - 221.205.255.255netname: UNICOM-SXdescr: C-ina Unicom S-anxi Province Networkdescr: C-ina Unicomcountry: CNadmin-c: CH1302-APtec--c: XH63-APre-rks: service providermnt-by: APNIC-HMmnt-lower: MAINT-CNCGROUP-SXmnt-routes: MAINT-CNCGROUP-RRstatus: ALLOCATED PORTABLEre-rks: T-is object can only be modified by APNIC -ost-sterre-rks: If you wis- to modify t-is object details pleasere-rks: send e-il to -ost-ster@apnic.net wit- your organisationre-rks: account name in t-e subject line.c-anged: -m-c-anged@apnic.net 20030702c-anged: -m-c-anged@apnic.net 20060124c-anged: -m-c-anged@apnic.net 20090508source: APNICroute: 221.204.0.0/15descr: CNC Group CHINA169 S-anxi Province Networkcountry: CNorigin: AS4837mnt-by: MAINT-CNCGROUP-RRc-anged: abuse@cnc-noc.net 20060118source: APNICperson: C-inaUnicom Host-sternic--dl: CH1302-APe--il: abuse@c-inaunicom.cnaddress: No.21,Jin-Rong Streetaddress: Beijing,100140address: P.R.C-inap-one: 86-10-66259940fax-no: 86-10-662597-country: CNc-anged: abuse@c-inaunicom.cn 20090408mnt-by: MAINT-CNCGROUPsource: APNICperson: xue-ong -anaddress: BingZ-ou Nort- Road YouDian Front Street NO.2 S-anXi Data Communciation Bureau TaiYuan S-anXi C-inacountry: CNp-one: 86-351-4091749fax-no: 86-351-4088347e--il: -x-@public.ty.sx.cnnic--dl: XH63-APmnt-by: MAINT-CHINANET-SXc-anged: -x-@public.ty.sx.cn 20010208source: APNIC可以得出221.204.213.27這個-地址是屬于聯(lián)通旗下的。所以請求網(wǎng)絡專家支招，如何避免劫持，怎么把被劫持的頁面劫持回來。1 個答案
答案 1：
換個DNS試試， OpenDNS:208.67.222.222和208.67.220.220, Google: 8.8.8.8, 8.8.4.4
