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Can ping IP but not URLs
I'm completely puzzled about this: I have a laptop with Windows XP SP2 and
I'm connection to a router SpeedTouch using a Intel PRO/Wireless adapter. It 'sees' and connects to router just fine. The DHCP gives my laptop an IP and everything looks fine and well connected. However, I can't open IE with a URL! If I type in a URL then it says page cannot be displayed. If I type the IP address for that URL... it works and the pge is opened! I've been going through this problem for days now and I don't know what else to do. My Windows firewall is disabled and also the McAfee one. Could someone please help me? Thanks! Ana |
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#2
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Can ping IP but not URLs
On Tue, 30 Nov 2004 09:37:04 -0800, Ana wrote:
I'm completely puzzled about this: I have a laptop with Windows XP SP2 and I'm connection to a router SpeedTouch using a Intel PRO/Wireless adapter. It 'sees' and connects to router just fine. The DHCP gives my laptop an IP and everything looks fine and well connected. However, I can't open IE with a URL! If I type in a URL then it says page cannot be displayed. If I type the IP address for that URL... it works and the pge is opened! I've been going through this problem for days now and I don't know what else to do. My Windows firewall is disabled and also the McAfee one. Could someone please help me? Thanks! Ana Ana, Do you have this problem with all websites? From a command window: 1) Ping www.yahoo.com. 2) Ping 66.94.230.33. Report success / exact text of error messages. From your browser: 3) Browse www.yahoo.com. 4) Browse 66.94.230.33. Report success / exact text of error messages. DNS resolution is affected by the LSP / Winsock subsystem. http://support.microsoft.com/?id=318584 http://support.microsoft.com/?id=811259 If XP SP2, Start - Run - "cmd". Type "netsh winsock reset catalog" into the command window. Give LSP-Fix http://www.cexx.org/lspfix.htm, WinsockFix http://www.tacktech.com/display.cfm?ttid=257, or WinsockXPFix http://www.spychecker.com/program/winsockxpfix.html a shot. If no help yet, reset TCP/IP. http://support.microsoft.com/?id=299357 Start - Run - "cmd". Type "netsh int ip reset c:\netsh.txt" into the command window. If no help yet, provide ipconfig information for each computer, and we'll diagnose the problem. Start - Run - "cmd". Type "ipconfig /all c:\ipconfig.txt" into the command window - Open c:\ipconfig.txt in Notepad, make sure that Format - Word Wrap is NOT checked!, copy and paste entire contents into your next post. -- Cheers, Chuck Paranoia comes from experience - and is not necessarily a bad thing. |
#3
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Can ping IP but not URLs
Hi Chuck,
Thanks so much for your support!! :-) I did everything you said and the problem still remains. I also ran XP netdiag and the winsock is ok, the test ran successfully. I also reset TCP/IP. I don't understand what's happening. Here you have my ipconfig, it's in Portuguese but the placement of lines is the same as in english: Configuração IP do Windows Nome do sistema anfitrião. . . . .: Loomy Sufixo DNS principal. . . . . . . : Tipo de nó. . . . . . . . . . . . : HÃ*brido Rota IP activado. . . . . . . . . : Não WINS Proxy activado . . . . . . . : Não Lista de procura de sufixo de DNS : lan Adaptador ethernet Ligação de rede sem fios: Sufixo DNS especÃ*fico da ligação. : lan Descrição . . . . . . . . . . . . : Intel(R) PRO/Wireless 2200BG Network Connection Endereço fÃ*sico . . . . . . . . . : 00-0E-35-0F-94-2D DHCP activado . . . . . . . . . . : Sim Autoconfiguração activada . . . . : Sim Endereço IP . . . . . . . . . . . : 10.0.0.2 Máscara de sub-rede . . . . . . . : 255.255.255.0 Gateway predefinido . . . . . . . : 10.0.0.138 Servidor DHCP . . . . . . . . . . : 10.0.0.138 Servidores DNS. . . . . . . . . . : 10.0.0.138 Concessão obtida. . . . . . . . . : sexta-feira, 3 de Dezembro de 2004 19:35:32 Concessão obtida válida até . . . : sexta-feira, 3 de Dezembro de 2004 21:35:32 Thanks so much!! "Chuck" wrote: On Tue, 30 Nov 2004 09:37:04 -0800, Ana wrote: I'm completely puzzled about this: I have a laptop with Windows XP SP2 and I'm connection to a router SpeedTouch using a Intel PRO/Wireless adapter. It 'sees' and connects to router just fine. The DHCP gives my laptop an IP and everything looks fine and well connected. However, I can't open IE with a URL! If I type in a URL then it says page cannot be displayed. If I type the IP address for that URL... it works and the pge is opened! I've been going through this problem for days now and I don't know what else to do. My Windows firewall is disabled and also the McAfee one. Could someone please help me? Thanks! Ana Ana, Do you have this problem with all websites? From a command window: 1) Ping www.yahoo.com. 2) Ping 66.94.230.33. Report success / exact text of error messages. From your browser: 3) Browse www.yahoo.com. 4) Browse 66.94.230.33. Report success / exact text of error messages. DNS resolution is affected by the LSP / Winsock subsystem. http://support.microsoft.com/?id=318584 http://support.microsoft.com/?id=811259 If XP SP2, Start - Run - "cmd". Type "netsh winsock reset catalog" into the command window. Give LSP-Fix http://www.cexx.org/lspfix.htm, WinsockFix http://www.tacktech.com/display.cfm?ttid=257, or WinsockXPFix http://www.spychecker.com/program/winsockxpfix.html a shot. If no help yet, reset TCP/IP. http://support.microsoft.com/?id=299357 Start - Run - "cmd". Type "netsh int ip reset c:\netsh.txt" into the command window. If no help yet, provide ipconfig information for each computer, and we'll diagnose the problem. Start - Run - "cmd". Type "ipconfig /all c:\ipconfig.txt" into the command window - Open c:\ipconfig.txt in Notepad, make sure that Format - Word Wrap is NOT checked!, copy and paste entire contents into your next post. -- Cheers, Chuck Paranoia comes from experience - and is not necessarily a bad thing. |
#4
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Can ping IP but not URLs
On Thu, 2 Dec 2004 12:23:04 -0800, Ana wrote:
Hi Chuck, Thanks so much for your support!! :-) I did everything you said and the problem still remains. I also ran XP netdiag and the winsock is ok, the test ran successfully. I also reset TCP/IP. I don't understand what's happening. Here you have my ipconfig, it's in Portuguese but the placement of lines is the same as in english: Configuração IP do Windows Nome do sistema anfitrião. . . . .: Loomy Sufixo DNS principal. . . . . . . : Tipo de nó. . . . . . . . . . . . : Híbrido Rota IP activado. . . . . . . . . : Não WINS Proxy activado . . . . . . . : Não Lista de procura de sufixo de DNS : lan Adaptador ethernet Ligação de rede sem fios: Sufixo DNS específico da ligação. : lan Descrição . . . . . . . . . . . . : Intel(R) PRO/Wireless 2200BG Network Connection Endereço físico . . . . . . . . . : 00-0E-35-0F-94-2D DHCP activado . . . . . . . . . . : Sim Autoconfiguração activada . . . . : Sim Endereço IP . . . . . . . . . . . : 10.0.0.2 Máscara de sub-rede . . . . . . . : 255.255.255.0 Gateway predefinido . . . . . . . : 10.0.0.138 Servidor DHCP . . . . . . . . . . : 10.0.0.138 Servidores DNS. . . . . . . . . . : 10.0.0.138 Concessão obtida. . . . . . . . . : sexta-feira, 3 de Dezembro de 2004 19:35:32 Concessão obtida válida até . . . : sexta-feira, 3 de Dezembro de 2004 21:35:32 Thanks so much!! SNIP Ana, Is this a problem for all websites? Has this computer always had this problem? Also, your NAT router ("10.0.0.138") apparently is your DNS server. Is it configured that way on purpose? What make and model router are you using? Do its instructions say explicitly to configure it this way? Most NAT routers pass the IP address of your ISPs DNS servers to the computers. Some will act as a DNS cache, but if this one doesn't, and you configure your computer to assume that it does, you'll get this problem. But it will be a universal problem - all websites will be unreachable. Which is why I asked previously (but you did not answer). Do you have this problem with all websites? From a command window: 1) Ping www.yahoo.com. 2) Ping 66.94.230.33. Report success / exact text of error messages. From your browser: 3) Browse www.yahoo.com. 4) Browse 66.94.230.33. Report success / exact text of error messages. If the above is not helpful, if only some websites are unreachable, or if your NAT router (what make and model?) WILL act as a DNS cache (maybe a router problem then), then you might get clues from an analysis website, like PCPitStop http://www.pcpitstop.com/default.asp. You also may be a victim of a DNS / Hosts Hijack. You've already checked the LSP / Winsock. Search your entire system drive, including hidden and system folders, for file "hosts". There is one legit copy, in C:\WINDOWS\system32\drivers\etc\ (for Windows NT/2000/XP, for instance). The others are possibly bogus, and part (but just part) of the problem. Examine the contents of each copy of "hosts" found, using Notepad. Scroll to the end of each Hosts file, by hitting Ctrl-End, then back up to the top, page by page, before deciding that any "hosts" file is empty. Look out for blank lines at the beginning and end of the file, after "localhost", placed there by an exploit. Do not assume that a file is empty simply because you see "localhost" followed by 50 blank lines! Also, check carefully for spyware or viral infection. If you're having trouble getting one of the websites listed below (since your problem is, after all, getting websites DOHH), use one of these websites to get you an ip address: All-NetTools: http://www.all-nettools.com/tools1.htm All-NetTools: http://216.92.207.177/toolbox DNSStuff: http://www.dnsstuff.com/ DNSStuff: http://69.2.200.183/ How current is your virus protection? Try one or more of these free online virus scans, which should complement your current protection: http://www.bitdefender.com/scan/license.php http://www.pandasoftware.com/activescan http://www.ravantivirus.com/scan/ http://security.symantec.com/ssc/home.asp http://housecall.trendmicro.com/housecall/start_corp.asp Now check for, and learn to defend against, additional problems - adware, crapware, spyware. Start by downloading each of the following additional free tools: AdAware http://www.lavasoftusa.com/ CWShredder http://www.majorgeeks.com/download4086.html HijackThis http://www.majorgeeks.com/download.php?det=3155 LSP-Fix http://www.cexx.org/lspfix.htm WinsockXPFix http://www.spychecker.com/program/winsockxpfix.html Spybot S&D http://www.safer-networking.org/index.php?page=download Stinger http://us.mcafee.com/virusInfo/default.asp?id=stinger TrendMicro Engine http://www.trendmicro.com/download/dcs.asp TrendMicro Signatures http://www.trendmicro.com/download/pattern.asp TrendMicro Instructions http://www.trendmicro.com/ftp/products/tsc/readme.txt Create a separate folder for HijackThis, such as C:\HijackThis - copy the downloaded file there. Create a separate folder for the two TrendMicro files, such as C:\TrendMicro - copy the downloaded files there (unzipped if necessary). AdAware, CWShredder, and Spybot S&D have install routines - run them. The other downloaded programs can be copied into, and run from, any convenient folder. First, run Stinger. Have it remove any problems found. Next, close all Internet Explorer and Outlook windows, and run CWShredder. Have it fix all problems found. Next, disable System Restore. http://vil.nai.com/vil/SystemHelpDocs/DisableSysRestore.htm Boot your computer into Safe Mode. http://support.microsoft.com/?id=315222 Run C:\TrendMicro\Sysclean.com. Delete any infectors found. Reboot your computer, and re enable System Restore. Next, run AdAware. First update it, configure for full scan (http://forums.spywareinfo.com/index.php?showtopic=11150), then scan. When scanning finishes, remove all Critical Objects found. Next, run Spybot S&D. First update it, then run a scan. Trust Spybot, and delete everything ("Fix Problems") that is displayed in Red. Then, run HijackThis ("Scan"). Do NOT make any changes immediately. Save the HJT Log. http://forums.spywareinfo.com/index.php?showtopic=227 http://forums.spywareinfo.com/index.php?showtopic=11150 Finally, have your HJT log interpreted by experts at one or more of the following security forums (and please post a link to your forum posts, here): Aumha: http://forum.aumha.org/index.php Net-Integration: http://forums.net-integration.net/ Spyware Info: http://forums.spywareinfo.com/ Spyware Warrior: http://spywarewarrior.com/index.php Tom Coyote: http://forums.tomcoyote.org/ If removal of any spyware affects your ability to access the internet (some spyware builds itself into the network software, and its removal may damage your network), run LSP-Fix and / or WinsockXPFIx. -- Cheers, Chuck Paranoia comes from experience - and is not necessarily a bad thing. |
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