D
Don
I'm running XP Pro with all the latest updates. I have 2 machines
both running the same version of XP Pro on my local net. The 2
machines are connected to the same D-Link router and the router is
connected to a cable modem and on to my ISP.
Something happened on one of the machines that suddently cut off
access to the Internet for most of the applications. Applications
like Firefox and Thunderbird will not talk to the net at all getting
a "connection refused by server" message. Outlook can sometimes get
out. IE is the only application that can get to the net pretty
consistently but even that is not 100%. Some pages won't come up.
The second machinge on the local net is stil working fine so I assume
the router hardware and cable modem are still working correctly and
the problem must be software on the bad machine.
The obviously wrong symptom on the broken machine is that I cannot
ping that machine's own IP address (either numerically or
symbolically).
The good computer can ping it's own IP address with no problems and
has no trouble getting out to the Internet and this second machine can
ping the computer that is having the trouble.
I've tried adding entries for both local machinse into the hosts file
but that had no effect of the problem.
I've tried running with the XP firewall disabled and enabled with no
change in the symptoms and currently have it disabled and the service
is not even running. The firewall does not make any diffence to the
good machine. That machine works with the firewall either disabled
or enabled so the firewall is probably not the problem.
I've tried resetting the tcp/ip stack using "netsh" with no effect.
I've tried restoring the system to a previously know good working
point using the system restore utility and it reported that there
were no differences in the system files and did nothing,
I've tried reinstalling XP and that did not fix the problem either.
I've tried updating the driver on my NIC to the latest version and
that did not fix the problem.
I can ping the other computer on my home network and I can ping both
127.0.0.1 and "localhost" on the problem machine with no problems.
The "good" computer can ping all of the above and it can ping the "bad"
computer. It can also ping it's own IP address just fine. Both
machines can ping the router with no problems. The only ping that
does not work is on the problem machine trying to ping itself.
Running the XP network diagnostic on the "good" computer shows
everything passing with no errors but running it on the bad computer
shows everything passing except the ping of itself.
In the process of trying to post information on the net from my good
machine, I had to somehow get data from the bad machine to the good
one. I can't use a floppy because the bad machine does not have a
floppy drive.
What I wound up doing was creating a shared folder on the "good"
machine and mapping it on the "bad" machine and that worked. I am able
to map network drives that exist on the "good" machine onto the "bad"
one. The reverse does not work though. I cannot create a shared
folder on the "bad" machine and map it on the "good" one. When I try
to map a folder this way, the "good" machine sees the "bad" machine's
name as part of my local network but it cannot see anything inside the
machine.
The IP is set up as DHCP from my local router. I've released and
renewed the license several times using ipconfig and even forced it to
use a different IP address by changing the settings in my router. None
of that had any effect.
The DNS server is passed through my router to the ISP and appears to
work fine as the other computer on my home net has no problems
accessing the net.
The WINS settings are to enable LMHOSTS lookup and the NetBIOS is set
to the "default" setting. No WINS servers are specified.
I tried comparing the settings on the two machines. So far, I think
I've gone through all the dialog boxes there are and have not found
any differences in the setting on the two machines except one. In
the Network Connections dialog box (Start/Settings/Network
Connections),
the good machine shows only one entry under "LAN or High-Speed
Internet"
which is the local area connection.
The bad machine has 2 entries under that heading but one is for the
firewire interface (that I'm not currently using). However, the bad
machine also has a heading entitled "Internet Gateway" and there is
one connection listed under that which reads "Internet Connection"
with type "Internet Gateway", status "Connected", and name "Internet
Connection". I've been told that this is an entry for the ICS service.
Trying to bring up the properties window on this connection results in
a dialog box that does not have any useful information in it. Right
clicking on it and asking for it's status brings up a dialog box that
indicates that the connection is good and working fine and there is
constant send and receive traffic on the interface (not a large amount
but the counters do constantly increment). There is a "disable" button
on this form and pressing it causes the router to release it's IP
address thereby disabling the connection to my ISP. Choosing the
"enable" option causes the router to "renew" its IP address and
everything works fine again.
I've tried everything I can think of to get rid of this entry and
cannot. I've even resorted to disabling the firewall/ICS service
and confirmed that it is not running any more but the entry still
exists. I've also tried manually editing the registry to disable
the ICS service (per a posting on the net) and that did not work
either.
When I reboot the bad system and immediately log on and bring up
the Network Connections dialog box, the Gateway entry is missing
but after about 30-60 seconds, it suddently appears in the window
again.
Can anyone tell me if this Internet Gateway entry is what is
causing my ping problems and if so, what can I do to fix it?
both running the same version of XP Pro on my local net. The 2
machines are connected to the same D-Link router and the router is
connected to a cable modem and on to my ISP.
Something happened on one of the machines that suddently cut off
access to the Internet for most of the applications. Applications
like Firefox and Thunderbird will not talk to the net at all getting
a "connection refused by server" message. Outlook can sometimes get
out. IE is the only application that can get to the net pretty
consistently but even that is not 100%. Some pages won't come up.
The second machinge on the local net is stil working fine so I assume
the router hardware and cable modem are still working correctly and
the problem must be software on the bad machine.
The obviously wrong symptom on the broken machine is that I cannot
ping that machine's own IP address (either numerically or
symbolically).
The good computer can ping it's own IP address with no problems and
has no trouble getting out to the Internet and this second machine can
ping the computer that is having the trouble.
I've tried adding entries for both local machinse into the hosts file
but that had no effect of the problem.
I've tried running with the XP firewall disabled and enabled with no
change in the symptoms and currently have it disabled and the service
is not even running. The firewall does not make any diffence to the
good machine. That machine works with the firewall either disabled
or enabled so the firewall is probably not the problem.
I've tried resetting the tcp/ip stack using "netsh" with no effect.
I've tried restoring the system to a previously know good working
point using the system restore utility and it reported that there
were no differences in the system files and did nothing,
I've tried reinstalling XP and that did not fix the problem either.
I've tried updating the driver on my NIC to the latest version and
that did not fix the problem.
I can ping the other computer on my home network and I can ping both
127.0.0.1 and "localhost" on the problem machine with no problems.
The "good" computer can ping all of the above and it can ping the "bad"
computer. It can also ping it's own IP address just fine. Both
machines can ping the router with no problems. The only ping that
does not work is on the problem machine trying to ping itself.
Running the XP network diagnostic on the "good" computer shows
everything passing with no errors but running it on the bad computer
shows everything passing except the ping of itself.
In the process of trying to post information on the net from my good
machine, I had to somehow get data from the bad machine to the good
one. I can't use a floppy because the bad machine does not have a
floppy drive.
What I wound up doing was creating a shared folder on the "good"
machine and mapping it on the "bad" machine and that worked. I am able
to map network drives that exist on the "good" machine onto the "bad"
one. The reverse does not work though. I cannot create a shared
folder on the "bad" machine and map it on the "good" one. When I try
to map a folder this way, the "good" machine sees the "bad" machine's
name as part of my local network but it cannot see anything inside the
machine.
The IP is set up as DHCP from my local router. I've released and
renewed the license several times using ipconfig and even forced it to
use a different IP address by changing the settings in my router. None
of that had any effect.
The DNS server is passed through my router to the ISP and appears to
work fine as the other computer on my home net has no problems
accessing the net.
The WINS settings are to enable LMHOSTS lookup and the NetBIOS is set
to the "default" setting. No WINS servers are specified.
I tried comparing the settings on the two machines. So far, I think
I've gone through all the dialog boxes there are and have not found
any differences in the setting on the two machines except one. In
the Network Connections dialog box (Start/Settings/Network
Connections),
the good machine shows only one entry under "LAN or High-Speed
Internet"
which is the local area connection.
The bad machine has 2 entries under that heading but one is for the
firewire interface (that I'm not currently using). However, the bad
machine also has a heading entitled "Internet Gateway" and there is
one connection listed under that which reads "Internet Connection"
with type "Internet Gateway", status "Connected", and name "Internet
Connection". I've been told that this is an entry for the ICS service.
Trying to bring up the properties window on this connection results in
a dialog box that does not have any useful information in it. Right
clicking on it and asking for it's status brings up a dialog box that
indicates that the connection is good and working fine and there is
constant send and receive traffic on the interface (not a large amount
but the counters do constantly increment). There is a "disable" button
on this form and pressing it causes the router to release it's IP
address thereby disabling the connection to my ISP. Choosing the
"enable" option causes the router to "renew" its IP address and
everything works fine again.
I've tried everything I can think of to get rid of this entry and
cannot. I've even resorted to disabling the firewall/ICS service
and confirmed that it is not running any more but the entry still
exists. I've also tried manually editing the registry to disable
the ICS service (per a posting on the net) and that did not work
either.
When I reboot the bad system and immediately log on and bring up
the Network Connections dialog box, the Gateway entry is missing
but after about 30-60 seconds, it suddently appears in the window
again.
Can anyone tell me if this Internet Gateway entry is what is
causing my ping problems and if so, what can I do to fix it?