Lan fine if Wireless - Lan Dead if Wired...?

[Kenneth]

Howdy,

I am having what I believe to be a rather odd problem...

We have six systems on our LAN. One is XP, the others are
2000 Pro.

When connected via any of several cables, the XP machine has
Internet, but cannot browse or ping any other system on the
LAN. And no other machine can browse or ping it.

Immediately upon switching the machine to a wireless
connection however, it has Internet, and can also browse our
LAN. Other systems can also browse it.

When cabled, if I attempt to view the workgroup list, it
fails to populate, that is, it does not even show the XP
machine.

When wireless, if I attempt to view the workgroup list it
populates immediately, and includes "itself" as we would
expect.

I will add one other thing:

This first happened about a month ago and I solved the
problem by un-installing, then re-installing File & Printer
Sharing.

Of course, when it happened today, I tried the same assuming
that it would work again. It did not help.

Sincere thanks for any help on this,

 

[Kenneth]

Howdy,

I am having what I believe to be a rather odd problem...

We have six systems on our LAN. One is XP, the others are
2000 Pro.

When connected via any of several cables, the XP machine has
Internet, but cannot browse or ping any other system on the
LAN. And no other machine can browse or ping it.

Immediately upon switching the machine to a wireless
connection however, it has Internet, and can also browse our
LAN. Other systems can also browse it.

When cabled, if I attempt to view the workgroup list, it
fails to populate, that is, it does not even show the XP
machine.

When wireless, if I attempt to view the workgroup list it
populates immediately, and includes "itself" as we would
expect.

I will add one other thing:

This first happened about a month ago and I solved the
problem by un-installing, then re-installing File & Printer
Sharing.

Of course, when it happened today, I tried the same assuming
that it would work again. It did not help.

Sincere thanks for any help on this,

Hello again,

I neglected to add...

There is only one software firewall actually on the system I
have described above. That is the Windows XP firewall, and
it is definitely set to OFF (we are behind a router
firewall.)

When I go into XP Security Center it shows that there is a
firewall ON however: Norton Internet Worm Protection.

But that software is positively NOT on the system.

Thanks again,