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can ping, can't access web page


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#1
naty99

naty99

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hi
i have been trying to connect a router and here is my problem:

the router is airlink AR670W wireless N router.
my modem is in bridge mode (checked with the ISP people).
my internet connection is ADSL. the connection
phone jack-->modem-->laptop works fine.
the connection that i am trying to establish is
phone jack-->modem-->router wan port--- router lan port-->laptop.
i configured the router as PPoE, entered the username and pswd, cloned mac address.
now i can't access all web pages, i can access yahoo and check my email, so it is not a temp page, i can access google. i can't access many pages for example, my bank website, fatwallet.com and many others.
when i configure the wireless connection, the same problem exists. i did the rebooting. everything is off, then i turn on the modem, after all the lights settel, i turn on the router, wait 2 minutes and turn on the laptop.
i also tried to disable the antivirus programs.
no viruses or malware (i use superantispyware, malwarebytes' and microsoft security essentials)
also i downloaded firefox and the same problem exists.
by the way, i can ping successfuly thru cmd command even the sites that i can't access.
nothing so far solved my problem.
i would appreciate ant help.
thanks

Edited by naty99, 20 January 2010 - 12:52 PM.

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#2
naty99

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..so far i did the following (followed ADMIN post http://www.geekstogo...ide-t2852.html)

1-TFC- temp file cleaner
2-ERUNT
3-malwarebytes', updated first, then ran quick scan.(No malicious items detected)
4-i have microsoft security essentials for antivirus.
5- reboot. same problem still exists.
6- GMER rootkit scanner. now when i run it, i get "c:windows\system32\config\system:system cannot find the file spcified", i clicked "ok" , i get all the options down to services shadowed, so i can't check them, i clicked scan anyway,it tells me that the same file (c:windows\system32\config\system:system) is used by another process, cannot access". i click ok, it scans but did not get "ark.txt" but got message "no modifications found".
7-ran OTL, got otl.txt but no extras.txt, i don't know how to read the otl file.

still having the same problem.
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#3
Dan

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Hi naty99; welcome to G2G :)

Let's have a look at your setup. Connect your machine directly to your modem (so that all sites work), and then do the following:
  • Select Start
  • In the Start Search field type cmd -- right-click on the cmd program and choose Run as administrator
  • In the new command prompt window, type ipconfig /all > C:\ipconfig.txt
  • Navigate to your C: drive and open the text file ipconfig.txt -- please copy/paste the contents of this file into your next response.
Once you've posted that log (give it a heading to indicate it was the direct modem connection), connect your machine back into the router (so that you can only access certain sites), and then please do the following:

Step 2 - Connectivity test:
  • Select Start
  • In the Start Search field type cmd -- right-click on the cmd program and choose Run as administrator
  • In the new command prompt window, please type the following commands (*Note: each ping will take approximately 10 seconds to complete; wait for the command prompt to return before you type the next one. Also, the single '>' and double '>>' are intentional; please type the commands exactly as they appear):
    • ipconfig /all > C:\results.txt
    • route print >> C:\results.txt
    • ping 127.0.0.1 >> C:\results.txt
    • ping fatwallet.com >> C:\results.txt
    • ping 216.138.164.31 >> C:\results.txt
  • Once the above commands have completed, navigate to your C: drive and open the text file results.txt -- please copy/paste the contents of this file into your next response.
- Dan
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#4
naty99

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first let me say Thank You for helping me, i appreciate it.

here are the logs



direct modem connection (ipconfig/all)


Windows IP Configuration

Host Name . . . . . . . . . . . . : ansari-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

PPP adapter comporium ADSL:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : comporium ADSL
Physical Address. . . . . . . . . :
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 67.58.112.188(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.255
Default Gateway . . . . . . . . . : 0.0.0.0
DNS Servers . . . . . . . . . . . : 208.104.2.85
208.104.244.45
NetBIOS over Tcpip. . . . . . . . : Disabled

Wireless LAN adapter Wireless Network Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel® WiFi Link 5100 AGN
Physical Address. . . . . . . . . : 00-24-D6-07-37-EE
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Broadcom NetLink ™ Gigabit Ethernet
Physical Address. . . . . . . . . : 00-26-D5-08-34-EE
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Autoconfiguration IPv4 Address. . : 169.254.84.85(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :
NetBIOS over Tcpip. . . . . . . . : Enabled
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#5
naty99

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here is the router connection



Windows IP Configuration

Host Name . . . . . . . . . . . . : ansari-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Wireless LAN adapter Wireless Network Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel® WiFi Link 5100 AGN
Physical Address. . . . . . . . . : 00-24-D6-07-37-EE
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Broadcom NetLink ™ Gigabit Ethernet
Physical Address. . . . . . . . . : 00-26-D5-08-34-EE
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 192.168.1.100(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Saturday, January 23, 2010 3:02:02 PM
Lease Expires . . . . . . . . . . : Saturday, January 30, 2010 3:02:02 PM
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 192.168.1.1
NetBIOS over Tcpip. . . . . . . . : Enabled
===========================================================================
Interface List
12...00 24 d6 07 37 ee ......Intel® WiFi Link 5100 AGN
11...00 26 d5 08 34 ee ......Broadcom NetLink ™ Gigabit Ethernet
1...........................Software Loopback Interface 1
===========================================================================

IPv4 Route Table
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 192.168.1.1 192.168.1.100 20
127.0.0.0 255.0.0.0 On-link 127.0.0.1 306
127.0.0.1 255.255.255.255 On-link 127.0.0.1 306
127.255.255.255 255.255.255.255 On-link 127.0.0.1 306
169.254.0.0 255.255.0.0 On-link 192.168.1.100 306
169.254.255.255 255.255.255.255 On-link 192.168.1.100 276
192.168.1.0 255.255.255.0 On-link 192.168.1.100 276
192.168.1.100 255.255.255.255 On-link 192.168.1.100 276
192.168.1.255 255.255.255.255 On-link 192.168.1.100 276
224.0.0.0 240.0.0.0 On-link 127.0.0.1 306
224.0.0.0 240.0.0.0 On-link 192.168.1.100 276
255.255.255.255 255.255.255.255 On-link 127.0.0.1 306
255.255.255.255 255.255.255.255 On-link 192.168.1.100 276
===========================================================================
Persistent Routes:
Network Address Netmask Gateway Address Metric
169.254.0.0 255.255.0.0 192.168.2.101 1
===========================================================================

IPv6 Route Table
===========================================================================
Active Routes:
If Metric Network Destination Gateway
1 306 ::1/128 On-link
1 306 ff00::/8 On-link
===========================================================================
Persistent Routes:
None

Pinging 127.0.0.1 with 32 bytes of data:
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128

Ping statistics for 127.0.0.1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms

Pinging fatwallet.com [216.138.164.31] with 32 bytes of data:
Reply from 216.138.164.31: bytes=32 time=61ms TTL=49
Reply from 216.138.164.31: bytes=32 time=60ms TTL=49
Reply from 216.138.164.31: bytes=32 time=62ms TTL=49
Reply from 216.138.164.31: bytes=32 time=57ms TTL=49

Ping statistics for 216.138.164.31:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 57ms, Maximum = 62ms, Average = 60ms

Pinging 216.138.164.31 with 32 bytes of data:
Reply from 216.138.164.31: bytes=32 time=60ms TTL=49
Reply from 216.138.164.31: bytes=32 time=61ms TTL=49
Reply from 216.138.164.31: bytes=32 time=72ms TTL=49
Reply from 216.138.164.31: bytes=32 time=89ms TTL=49

Ping statistics for 216.138.164.31:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 60ms, Maximum = 89ms, Average = 70ms
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#6
Dan

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Every thing looks fine there; like you said, your pings go through without any apparent hitches.

I know you've disabled your antivirus programs to test if these are the cause of your issue, however simply disabling security software does not always mean they're out of the way - they will often still be lurking around in memory and continue to provide you with "protection". So, since your pings go through, yet you can't connect, this suggests that it may be a software issue, since software security will often let through low-level traffic while stopping other traffic (such as HTTP).

Now, I know you might be thinking that if its software interference, it should be affecting you when you're connecting directly to the modem. However, depending on the software, it may be differentiating between the two connections (one may be deemed to be public, with the other being private). Of course, the fact that you can connect to some sites and not others pokes a few holes in this theory, but I'd still like to test it out anyway, mainly because its very easy to check.

Connect your machine via the router (use an Ethernet connection, not wireless please), and then do the following:

Step 1 - Restart your machine in Safe Mode with Networking:
Please restart the problematic machine in Safe Mode with Networking and then see if you can connect to the sites that you previously could not; can you?
*Note: You will not be able to use a wireless connection while in Safe Mode; please ensure all tests are performed with a wired (Ethernet) connection.

If you still can't connect to the problematic pages, then it may be that the MTU value set in your router is too large. To check this, login to your routers web console (you seem pretty tech savvy, so I won't post the exact steps - just ask if you don't know how to do this). Once logged in, look in your WAN settings (different on every router) for a section talking about your Maximum Transmission Unit (MTU). Normally, this defaults to 1500. Try changing this value down to 576 and then see if you can connect to the websites. If you cannot, change it back to 1492, then try again. If you still can't, decrease the MTU value by another 10, to 1482, and test again. Continue to repeat this process and see if you can ever connect to the sites. Don't go below 576. If this doesn't resolve your problem, set it back to 1500.

Finally, post a trace route to fatwallet.com.
  • Select Start
  • In the Start Search field type cmd and press the ENTER key
  • In the new command prompt window, type tracert fatwallet.com > C:\trace.txt
  • This command will take a few minutes to complete -- wait for your command prompt to return. Navigate to your C: drive and open the text file trace.txt -- please copy/paste the contents of this file into your next response.

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#7
naty99

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so far this is what i got

-restarting in safe mode with networking resulted in the same problem.

-changing MTU value
mtu= 576---same, still can ping
the default MTU on the router is 1492
so i decreased by 10 like you said, same problem plus now i can't access bing.com(my homepage) which i had no problem with before.
when i decrese the mtu i just click APPLY, and i restart the router from the router's web console (soft restart?), i don't turn everything off and on again.
i will continue with the testing (decresing mtu value) it will take some time.

question: could my router be defective?

again thank you for your help.

here is the tracert for fatwallet.com



Tracing route to fatwallet.com [216.138.164.31]
over a maximum of 30 hops:

1 1 ms <1 ms <1 ms ar670w [192.168.1.1]
2 33 ms 27 ms 29 ms 206.74.232.129
3 70 ms 73 ms 76 ms atm-1-0-9110701.r01.ncchrl.infoave.net [165.166.139.42]
4 70 ms 72 ms 70 ms te3-1.ccr02.clt01.atlas.cogentco.com [38.104.168.29]
5 81 ms 81 ms * te8-3.ccr01.atl01.atlas.cogentco.com [154.54.6.173]
6 75 ms 78 ms 85 ms te4-3.ccr01.atl02.atlas.cogentco.com [154.54.0.162]
7 78 ms 79 ms 81 ms qwest.atl02.atlas.cogentco.com [154.54.10.62]
8 96 ms 97 ms 95 ms cer-core-02.inet.qwest.net [67.14.8.14]
9 97 ms 103 ms 99 ms cer-edge-14.inet.qwest.net [205.171.139.6]
10 224 ms 407 ms 479 ms 65-117-139-62.dia.static.qwest.net [65.117.139.62]
11 118 ms 113 ms 115 ms core-01-g4-2.lsvokyqy.cinergycom.net [216.205.213.232]
12 113 ms 112 ms 117 ms agg-01-g4-23.iplwin75.cinergycom.net [72.4.78.41]
13 111 ms 112 ms 109 ms ge-2-3-0-500.chc-core-r2.norlight.net [66.84.254.1]
14 107 ms 111 ms 109 ms ge-0-1-0-0.brk-dist-r1.norlight.net [66.84.254.78]
15 106 ms 109 ms 110 ms 216.138.164.31

Trace complete.
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#8
naty99

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i forgot to mention that i did not disable antivirus programs but uninstalled microsoft security essentials, superantisyware and malwarebytes' (thru control panel -programms-uninstall), also uninstalled Windows Defender. still got same result.
after the test, i installed avast! instead of microsoft security essentails.
just thought to mention this if it makes any difference.
thanks.
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#9
Dan

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Do you have a different computer that you can try plugging into the router, to see if it has the same issues?

For ADSL connections, your MTU should be set at 1400. Try setting your routers MTU value to that. Alternatively, login to your modems web console and try to find a section in regards to its MTU value. Note this value down then set your routers value to the same. There's a slim chance that it may be your machines MTU value, although I think syncing the value set in your router with the value your modem is using may help.

Packets are going through fine, so I don't know if I'd label it a faulty router just yet, but there's always a possibility.

I will try to post more later -- short on time right now.
- Dan
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#10
naty99

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hi
the same problem occures with my other desktop (windows xp).
i contacted the ISP people to ask how to access the modem config. menu, was told that the modem is in bridge mode, and there is no way to access it from my computer. according to the cd that came with the modem i was supposed to be able to access it using the web browser (192.168.1.1),did not work.
at one point i did change the router ip address to 192.168.2.1 in case of conflict, that did not work.

i took my laptop to a starbucks and had no problem connecting to their free wifi.
thank you Dan for all your help.
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#11
peterm

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Hi Naty99
Have you tried to plug the computer directly into the modem ?
To be honest I can not remember if the computer will worlk if plugged into a modem in bridge mode. Worth a try.
If need be we can force the modem out of bridge mode. This would then elimate the router as a fault point.
Cheers
Peterm
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