Local computer generates traffic

[Guest]

I connected two computers as a local network. Computer1 is connected to the
Internet via a broadband connection. I use internet connection sharing. That
works fine. Computer1 has IP address 192.168.0.1 on the local adapter.
Computer2 gets an automatic IP address from the gateway on computer1.
What happens is that computer2 generates an enormous traffic to other
adresses on the 192.168 subnet. These requests propagate to the Internet and
aventually time out.
They do find a server that belongs to my ISP
I can follow the traffic with the traffic log of my firewall (Sygate).
I also notice that the IP address of computer2 changes every few minutes
although the lease is for 7 days. When this happens the MAC address of
computer2 also changes!!!
The connection between the two computers is a USB host link cable from
Digitus.
Maybe I should just get a proper Ethernet connection?
Any other ideas?

 

[Malke]

I connected two computers as a local network. Computer1 is connected
to the Internet via a broadband connection. I use internet connection
sharing. That works fine. Computer1 has IP address 192.168.0.1 on the
local adapter. Computer2 gets an automatic IP address from the gateway
on computer1. What happens is that computer2 generates an enormous
traffic to other adresses on the 192.168 subnet. These requests
propagate to the Internet and aventually time out.
They do find a server that belongs to my ISP
I can follow the traffic with the traffic log of my firewall (Sygate).
I also notice that the IP address of computer2 changes every few
minutes
although the lease is for 7 days. When this happens the MAC address
of computer2 also changes!!!
The connection between the two computers is a USB host link cable from
Digitus.
Maybe I should just get a proper Ethernet connection?
Any other ideas?

Using a router is always preferrable to using ICS. However, have you run
antivirus scans (using a current version av with updated definitions)
on both computers? Please run the scans in Safe Mode.

Malke

 

[Guest]

this sounds a lot like a virus use some independet scanner (online) to scan
for viruses cuz probably your scanner has been compromised

http://housecall.trendmicro.com/housecall/start_corp.asp

 

[Papa]

Your LAN would be much simpler, and a lot less problematic, if you would
drop ICS and your USB hookup in favor of a router, CAT 5 cables, and Network
Interface Cards (NICs). The router upstream port would connect to your cable
or DSL modem. The downstream ports would connect to a NIC in each PC via
straight-thru CAT5 cables. Alternatively, you could use a wireless router
and wireless NICs. In my LAN setup, I have a wireless router that also
includes wired ports. Three of those wired ports connect to 3 PCs. A 4th PC
connects wirelessly. All 4 PCs are independent of one another, not requiring
that any of the others be running, yet file access from any PC in the LAN to
any other PC in the LAN is available.