Internet Connection Sharing (ICS) won't stay disabled

  • Thread starter Thread starter Andrew Athan
  • Start date Start date
A

Andrew Athan

I fear a worm, virus or trojan.

I have a very strange problem on my Compaq Presario 900
laptop. The symptoms are that periodically, it loses
connectivity to the LAN (Netgear cable router hosted DHCP
LAN on 192.168.2/24)--for example, I periodically can't
ping 192.168.2.1 (the router).

The machine has an "Internet Connection" (ICS) icon in its
network folder that, for some reason, is active. If I
disable it, it re-enables itself after a few seconds. I
suspect this is part of the problem.

There is an IEEE 1394 and an Ethernet card connection and
a couple of dial-up connections as well, but I have
disabled the network bridge. *NONE* of the other
connections contain a "allow users to share this
connection" checkbox that is checked--in fact, the
ethernet card connection doesn't even offer the checkbox.

Strangely, some of the other computers on the network seem
to be dependent on this connection. I am not always able
to reproduce this behavior, but if I connect the laptop in
question to a hub, and connect another computer to that
hub, and also connect an uplink cable to the Netgear
router, and I then try to ping 192.168.2.1 from the "other
computer" it of course works. If I then unplig the laptop
in question, the ping from the "other computer" fails.
This would seem to indicate it is dependent on the
laptop's ICS. Yet, no ICS options are specificed on
the "other" computer, and it has an address vended on
192.168.2/24 not 192.168.0/24 (ICS's default range).

Are strange ARP games being played??!!

Any comments?
 
Back
Top