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Internet Access on small LAN

Author
12 May 2009 1:04 PM
Kevin
Dear NG:
Windows XP Pro Version 5.1 (Build 2600.xpsp_sp3_gdr.080814-1236 : Service
Pack 3)
Internet Explorer Version: 8.0.6001.18702
No Spybot, No Ad-Aware
AVG free 8.5.323
D-Link DI-704

I have a small Ethernet LAN - 3 Win XP Pro machines - connected through
D-Link.

Computers A and B will connect successfully to the internet, however C will
not.

I can successfully connect to Computer C via Remote Desktop from either A or
B.  This leads me to assume,  that the problem is NOT a mechanical one.
However I admit that my knowledge of networking is limited.

If I Ping the Default Gateway from Computer C, all the packets time out.
100% loss.
However, I can successfully Ping Computers A or B from C.
If I Ping Computer C from either A or B, again all packets time out.  100%
loss.

DHCP is enabled on the D-Link and all computers.  Computers A, B and C all
successfully retrieve IP addresses.

I'm stumped.

-Kevin

Author
12 May 2009 1:43 PM
smlunatick
Show quote Hide quote
On May 12, 2:04 pm, "Kevin" <nos...@nospam.com> wrote:
> Dear NG:
> Windows XP Pro Version 5.1 (Build 2600.xpsp_sp3_gdr.080814-1236 : Service
> Pack 3)
> Internet Explorer Version: 8.0.6001.18702
> No Spybot, No Ad-Aware
> AVG free 8.5.323
> D-Link DI-704
>
> I have a small Ethernet LAN - 3 Win XP Pro machines - connected through
> D-Link.
>
> Computers A and B will connect successfully to the internet, however C will
> not.
>
> I can successfully connect to Computer C via Remote Desktop from either A or
> B.  This leads me to assume,  that the problem is NOT a mechanical one.
> However I admit that my knowledge of networking is limited.
>
> If I Ping the Default Gateway from Computer C, all the packets time out.
> 100% loss.
> However, I can successfully Ping Computers A or B from C.
> If I Ping Computer C from either A or B, again all packets time out.  100%
> loss.
>
> DHCP is enabled on the D-Link and all computers.  Computers A, B and C all
> successfully retrieve IP addresses.
>
> I'm stumped.
>
> -Kevin

What are the DNS "server" IP addresses on each?
Author
12 May 2009 2:22 PM
Kevin
Show quote Hide quote
"smlunatick" <yves***@gmail.com> wrote in message
news:75b5e898-5ce0-4dd7-8bda-9c22c7280fb9@u10g2000vbd.googlegroups.com...
On May 12, 2:04 pm, "Kevin" <nos...@nospam.com> wrote:
> Dear NG:
> Windows XP Pro Version 5.1 (Build 2600.xpsp_sp3_gdr.080814-1236 : Service
> Pack 3)
> Internet Explorer Version: 8.0.6001.18702
> No Spybot, No Ad-Aware
> AVG free 8.5.323
> D-Link DI-704
>
> I have a small Ethernet LAN - 3 Win XP Pro machines - connected through
> D-Link.
>
> Computers A and B will connect successfully to the internet, however C
> will
> not.
>
> I can successfully connect to Computer C via Remote Desktop from either A
> or
> B. This leads me to assume, that the problem is NOT a mechanical one.
> However I admit that my knowledge of networking is limited.
>
> If I Ping the Default Gateway from Computer C, all the packets time out.
> 100% loss.
> However, I can successfully Ping Computers A or B from C.
> If I Ping Computer C from either A or B, again all packets time out. 100%
> loss.
>
> DHCP is enabled on the D-Link and all computers. Computers A, B and C all
> successfully retrieve IP addresses.
>
> I'm stumped.
>
> -Kevin

What are the DNS "server" IP addresses on each?

smlunatick,
Thanks for your reply.
ipconfig /all
DNS Servers 24.29.103.15 and 24.29.103.16 on all 3 machines.
-Kevin
Author
12 May 2009 3:46 PM
smlunatick
Show quote Hide quote
On May 12, 3:22 pm, "Kevin" <nos...@nospam.com> wrote:
> "smlunatick" <yves***@gmail.com> wrote in message
>
> news:75b5e898-5ce0-4dd7-8bda-9c22c7280fb9@u10g2000vbd.googlegroups.com...
> On May 12, 2:04 pm, "Kevin" <nos...@nospam.com> wrote:
>
>
>
> > Dear NG:
> > Windows XP Pro Version 5.1 (Build 2600.xpsp_sp3_gdr.080814-1236 : Service
> > Pack 3)
> > Internet Explorer Version: 8.0.6001.18702
> > No Spybot, No Ad-Aware
> > AVG free 8.5.323
> > D-Link DI-704
>
> > I have a small Ethernet LAN - 3 Win XP Pro machines - connected through
> > D-Link.
>
> > Computers A and B will connect successfully to the internet, however C
> > will
> > not.
>
> > I can successfully connect to Computer C via Remote Desktop from either A
> > or
> > B. This leads me to assume, that the problem is NOT a mechanical one.
> > However I admit that my knowledge of networking is limited.
>
> > If I Ping the Default Gateway from Computer C, all the packets time out..
> > 100% loss.
> > However, I can successfully Ping Computers A or B from C.
> > If I Ping Computer C from either A or B, again all packets time out. 100%
> > loss.
>
> > DHCP is enabled on the D-Link and all computers. Computers A, B and C all
> > successfully retrieve IP addresses.
>
> > I'm stumped.
>
> > -Kevin
>
> What are the DNS "server" IP addresses on each?
>
> smlunatick,
> Thanks for your reply.
> ipconfig /all
> DNS Servers 24.29.103.15 and 24.29.103.16 on all 3 machines.
> -Kevin

Good!  Then, in Control Panel, check the Firewall "status."  Turn it
off on the "C" PC and test again.  If it works, then the firewall is
set too "strictly."
Author
12 May 2009 3:02 PM
Jack (MVP-Networking)
Hi
Maybe this can Help, http://www.ezlan.net/debug.html
Jack (MS, MVP-Networking)

Show quoteHide quote
"Kevin" <nospam@nospam.com> wrote in message
news:Oc1S$Iw0JHA.1372@TK2MSFTNGP05.phx.gbl...
> Dear NG:
> Windows XP Pro Version 5.1 (Build 2600.xpsp_sp3_gdr.080814-1236 : Service
> Pack 3)
> Internet Explorer Version: 8.0.6001.18702
> No Spybot, No Ad-Aware
> AVG free 8.5.323
> D-Link DI-704
>
> I have a small Ethernet LAN - 3 Win XP Pro machines - connected through
> D-Link.
>
> Computers A and B will connect successfully to the internet, however C
> will not.
>
> I can successfully connect to Computer C via Remote Desktop from either A
> or B.  This leads me to assume,  that the problem is NOT a mechanical one.
> However I admit that my knowledge of networking is limited.
>
> If I Ping the Default Gateway from Computer C, all the packets time out.
> 100% loss.
> However, I can successfully Ping Computers A or B from C.
> If I Ping Computer C from either A or B, again all packets time out.  100%
> loss.
>
> DHCP is enabled on the D-Link and all computers.  Computers A, B and C all
> successfully retrieve IP addresses.
>
> I'm stumped.
>
> -Kevin
>
>
>
>
>
Author
12 May 2009 8:40 PM
Kevin
Thanks everyone for your suggestions.
It turned out that the D-Link router was the problem.  I switched it out
with a new router and I was operational in minutes.
I got quite an education in the past two days on troubleshooting a small
LAN.  So all was not lost.
Thanks again,
Kevin

Show quoteHide quote
"Jack (MVP-Networking)" <j***@discussiongroup.com> wrote in message
news:u2ZSBKx0JHA.2300@TK2MSFTNGP06.phx.gbl...
> Hi
> Maybe this can Help, http://www.ezlan.net/debug.html
> Jack (MS, MVP-Networking)
>
> "Kevin" <nospam@nospam.com> wrote in message
> news:Oc1S$Iw0JHA.1372@TK2MSFTNGP05.phx.gbl...
>> Dear NG:
>> Windows XP Pro Version 5.1 (Build 2600.xpsp_sp3_gdr.080814-1236 : Service
>> Pack 3)
>> Internet Explorer Version: 8.0.6001.18702
>> No Spybot, No Ad-Aware
>> AVG free 8.5.323
>> D-Link DI-704
>>
>> I have a small Ethernet LAN - 3 Win XP Pro machines - connected through
>> D-Link.
>>
>> Computers A and B will connect successfully to the internet, however C
>> will not.
>>
>> I can successfully connect to Computer C via Remote Desktop from either A
>> or B.  This leads me to assume,  that the problem is NOT a mechanical
>> one. However I admit that my knowledge of networking is limited.
>>
>> If I Ping the Default Gateway from Computer C, all the packets time out.
>> 100% loss.
>> However, I can successfully Ping Computers A or B from C.
>> If I Ping Computer C from either A or B, again all packets time out.
>> 100% loss.
>>
>> DHCP is enabled on the D-Link and all computers.  Computers A, B and C
>> all successfully retrieve IP addresses.
>>
>> I'm stumped.
>>
>> -Kevin
>>
>>
>>
>>
>>
>