Jeff Younker wrote:
>
> He's receiving ICMP 'administratively prohibited' messages in response to
> traffic from his machine. These ICMP messages could be generated by the
> netbios services encapsulated in TCP/IP. (Ports 137, 138, and 139 as I
> recall.)
I thought that disabling the bindings on netbios and netbeui would take
care of that. So I did an experiment and tried to connect to ports 137,
138, and 139 on my machine from another system. It got through.
I then went into the Enable Security / TCP/IP Settings dialog box and
enabled only certain TCP ports. Now, I can't connect to those ports
from the other system, but I'm still seeing the ICMP messages on the
remote router.
I really hate to set up a firewall just for the sake of one computer.
I wonder how long it will be until we can buy network cards with a
built-in firewall.
Of course, what I really don't understand is why the cable company
doesn't block the netbios traffic wherever and whenever possible.
Eric Johnson
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