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Iced Tea
Sep 11, 2012, 9:10:13 AM9/11/12
to
I have 3 computers and some other electronics (BluRay, TVs, Wii) on my home
network, About 3 weeks ago the main computer that is running Windows XP SP3
will lose the internet connection at the same time evey morning for about 10
minutes. I can access the other comptuers on the network and they can access
the one that loses the internet connection. The computer with Vista &
Windows 7 don't have this problem.
My network setup is the following and everything is hardwired:
Linksys WRT54GL
Zonet 16 port hub
3 computers (XP,Vista and 7)
Everything has static IPs with the exception of 3 devices which you have no
control over.
Any help would be greatly appreciated, Thanks,
Carl
network, About 3 weeks ago the main computer that is running Windows XP SP3
will lose the internet connection at the same time evey morning for about 10
minutes. I can access the other comptuers on the network and they can access
the one that loses the internet connection. The computer with Vista &
Windows 7 don't have this problem.
My network setup is the following and everything is hardwired:
Linksys WRT54GL
Zonet 16 port hub
3 computers (XP,Vista and 7)
Everything has static IPs with the exception of 3 devices which you have no
control over.
Any help would be greatly appreciated, Thanks,
Carl
Char Jackson
Sep 11, 2012, 10:54:23 AM9/11/12
to
On Tue, 11 Sep 2012 08:10:13 -0500, "Iced Tea" <iced...@cox.net>
wrote:
Nothing jumps out at me, with the possible exception of an IP
addressing conflict (perhaps with one of the devices which you have no
control over) since everything is static, so I would use a systematic
approach. When Internet connectivity is lost, you've already verified
that the LAN isn't affected by pinging or accessing in both
directions, so (from the XP PC) ping the router's IP to make sure it's
reachable, then ping your ISP's gateway IP and/or an Internet address
such as 4.2.2.2 or 8.8.8.8, two easy to remember IPs. It would be nice
to know where connectivity is breaking down.
You could also disconnect everything from the WRT54GL (during the
affected period) and connect the XP PC directly to the router,
bypassing the Zonet hub (switch?). The point is to rule things out and
narrow down the possible culprits. Disconnecting everything else rules
out conflicts from those systems/devices, while connecting directly to
the router rules out the hub. Pinging various endpoints verifies basic
connectivity without relying on Layer 7 applications such as web
browsers. I assume you've already considered whether the XP PC is
scheduled to run a task every day that's causing this behavior.
wrote:
addressing conflict (perhaps with one of the devices which you have no
control over) since everything is static, so I would use a systematic
approach. When Internet connectivity is lost, you've already verified
that the LAN isn't affected by pinging or accessing in both
directions, so (from the XP PC) ping the router's IP to make sure it's
reachable, then ping your ISP's gateway IP and/or an Internet address
such as 4.2.2.2 or 8.8.8.8, two easy to remember IPs. It would be nice
to know where connectivity is breaking down.
You could also disconnect everything from the WRT54GL (during the
affected period) and connect the XP PC directly to the router,
bypassing the Zonet hub (switch?). The point is to rule things out and
narrow down the possible culprits. Disconnecting everything else rules
out conflicts from those systems/devices, while connecting directly to
the router rules out the hub. Pinging various endpoints verifies basic
connectivity without relying on Layer 7 applications such as web
browsers. I assume you've already considered whether the XP PC is
scheduled to run a task every day that's causing this behavior.
Iced Tea
Sep 13, 2012, 11:09:12 AM9/13/12
to
I have discovered something sort of new this morning, I turned the computer
on later than I usually do and it seems like it is 30-35 minutes after I
turn on the XP PC that I lose the connection for about 10 minutes.
I did ping the router ip and my ISP gateway and had 0% loss, as far as the
XP PC running some sort of task that would shut the connection down, there
is nothing that I am aware of.
I have bypassed the hub/switch but I figured since I didn't have any signal
loss that it was either one of those devices. I am wrong to think that?
Remember I am not a network guru just know the very basics.
"Char Jackson" <no...@none.invalid> wrote in message
news:u7ju48hnlthroiiuv...@4ax.com...
on later than I usually do and it seems like it is 30-35 minutes after I
turn on the XP PC that I lose the connection for about 10 minutes.
I did ping the router ip and my ISP gateway and had 0% loss, as far as the
XP PC running some sort of task that would shut the connection down, there
is nothing that I am aware of.
I have bypassed the hub/switch but I figured since I didn't have any signal
loss that it was either one of those devices. I am wrong to think that?
Remember I am not a network guru just know the very basics.
"Char Jackson" <no...@none.invalid> wrote in message
news:u7ju48hnlthroiiuv...@4ax.com...
Char Jackson
Sep 13, 2012, 1:47:19 PM9/13/12
to
On Thu, 13 Sep 2012 10:09:12 -0500, "Iced Tea" <iced...@cox.net>
wrote:
>I have discovered something sort of new this morning, I turned the computer
>on later than I usually do and it seems like it is 30-35 minutes after I
>turn on the XP PC that I lose the connection for about 10 minutes.
I suppose that points to something on that particular PC, versus
something elsewhere on the network, like the router.
>I did ping the router ip and my ISP gateway and had 0% loss,
If that test was performed during the period of lost connectivity, it
indicates that connectivity is not actually lost. That brings up the
obvious question: how are you determining that you're losing Internet
connectivity for a period of time? Let me expand that question: What
are ALL OF THE WAYS that you're determining that you're losing
Internet connectivity for a period of time?
wrote:
>I have discovered something sort of new this morning, I turned the computer
>on later than I usually do and it seems like it is 30-35 minutes after I
>turn on the XP PC that I lose the connection for about 10 minutes.
something elsewhere on the network, like the router.
>I did ping the router ip and my ISP gateway and had 0% loss,
indicates that connectivity is not actually lost. That brings up the
obvious question: how are you determining that you're losing Internet
connectivity for a period of time? Let me expand that question: What
are ALL OF THE WAYS that you're determining that you're losing
Internet connectivity for a period of time?
Iced Tea
Sep 14, 2012, 10:18:04 AM9/14/12
to
Yes I did perform those tests when I lost connectivity. The only way I know
that I lose the connection is that I am usually surfing the web or checking
my email with IE 8, Microsoft Office Outlook 2003 and Outlook Express 6. I
start getting 'Web page cannot be displayed' or 'News server cannot be
found' or the error when Outlook tries to send/receive email.
Not sure what else to check.
Thanks for your help so far,
Carl
that I lose the connection is that I am usually surfing the web or checking
my email with IE 8, Microsoft Office Outlook 2003 and Outlook Express 6. I
start getting 'Web page cannot be displayed' or 'News server cannot be
found' or the error when Outlook tries to send/receive email.
Not sure what else to check.
Thanks for your help so far,
Carl
"Char Jackson" <no...@none.invalid> wrote in message
news:bg6458lgmvcel5trf...@4ax.com...
Char Jackson
Sep 14, 2012, 1:38:47 PM9/14/12
to
On Fri, 14 Sep 2012 09:18:04 -0500, "Iced Tea" <iced...@cox.net>
wrote:
>Yes I did perform those tests when I lost connectivity. The only way I know
>that I lose the connection is that I am usually surfing the web or checking
>my email with IE 8, Microsoft Office Outlook 2003 and Outlook Express 6. I
>start getting 'Web page cannot be displayed' or 'News server cannot be
>found' or the error when Outlook tries to send/receive email.
The good news seems to be that it's not a network or connectivity
issue. It looks like a DNS issue, possibly caused by malware. Which
antimalware tools do you regularly use?
You can easily check if it's limited to DNS by gathering the IP
address(es) of one or more popular web sites and/or your email servers
before you're experiencing the problem. Then, when you can't access
the website or mail server by it's usual URL, try to use its IP
address instead. If the site loads, something is stepping on your
DNS...possibly malware trying to intercept your DNS requests and
redirecting them.
Examples:
www.google.com
74.125.225.208
www.yahoo.com
98.139.183.24 (Yahoo page saying page not found, but redirects
automatically)
www.microsoft.com
65.55.57.27
wrote:
>Yes I did perform those tests when I lost connectivity. The only way I know
>that I lose the connection is that I am usually surfing the web or checking
>my email with IE 8, Microsoft Office Outlook 2003 and Outlook Express 6. I
>start getting 'Web page cannot be displayed' or 'News server cannot be
>found' or the error when Outlook tries to send/receive email.
issue. It looks like a DNS issue, possibly caused by malware. Which
antimalware tools do you regularly use?
You can easily check if it's limited to DNS by gathering the IP
address(es) of one or more popular web sites and/or your email servers
before you're experiencing the problem. Then, when you can't access
the website or mail server by it's usual URL, try to use its IP
address instead. If the site loads, something is stepping on your
DNS...possibly malware trying to intercept your DNS requests and
redirecting them.
Examples:
www.google.com
74.125.225.208
www.yahoo.com
98.139.183.24 (Yahoo page saying page not found, but redirects
automatically)
www.microsoft.com
65.55.57.27
Iced Tea
Sep 15, 2012, 12:28:26 PM9/15/12
to
I have the AVG Internet Security Suite (paid subscription) and I us the free
version of Spybot. Definitions on both are up to date and neither one find
anything, if you have another malware finder to reccomend please let me
know. You help has and is very much appreciated.
Thanks!!!
version of Spybot. Definitions on both are up to date and neither one find
anything, if you have another malware finder to reccomend please let me
know. You help has and is very much appreciated.
Thanks!!!
Carl
"Char Jackson" <no...@none.invalid> wrote in message
news:5bo658dt7h98asnj0...@4ax.com...
"Char Jackson" <no...@none.invalid> wrote in message
Char Jackson
Sep 16, 2012, 10:57:10 AM9/16/12
to
On Sat, 15 Sep 2012 11:28:26 -0500, "Iced Tea" <iced...@cox.net>
wrote:
>I have the AVG Internet Security Suite (paid subscription) and I us the free
>version of Spybot. Definitions on both are up to date and neither one find
>anything, if you have another malware finder to reccomend please let me
>know. You help has and is very much appreciated.
I use Malwarebytes Antimalware (MBAM) and SuperAntiSpyware, both free.
No real idea if they are better, but different tools sometimes find
things missed by others.
Were you able to test the DNS bypass that I suggested earlier?
wrote:
>I have the AVG Internet Security Suite (paid subscription) and I us the free
>version of Spybot. Definitions on both are up to date and neither one find
>anything, if you have another malware finder to reccomend please let me
>know. You help has and is very much appreciated.
No real idea if they are better, but different tools sometimes find
things missed by others.
Were you able to test the DNS bypass that I suggested earlier?
Iced Tea
Sep 17, 2012, 8:42:57 AM9/17/12
to
Not yet on the DNS bypass, will let you know
"Char Jackson" <no...@none.invalid> wrote in message
news:e1qb585i4l89kcd4j...@4ax.com...
"Char Jackson" <no...@none.invalid> wrote in message
Vinodh Kumar VS
Feb 25, 2013, 1:34:13 AM2/25/13
to
You can also check if AVG is running some kind of a scan or firewall to
drop http packets. you can verify by doing a ping to www.yahoo.com, if
the ip is resolved DNS works and so there could be a problem that http
is not working.
Thanks,
Vinodh
drop http packets. you can verify by doing a ping to www.yahoo.com, if
the ip is resolved DNS works and so there could be a problem that http
is not working.
Thanks,
Vinodh
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