That's not "Microsoft type" - ICMP has type and codes, depending on
what the message is (RFC 792 and the likes), like yours would be:

ECHOREPLY --> type 0, code 0
ECHO [you probably meant REQUEST] --> type 8, code 0
TIME_EXCEEDED --> type 11, code 0 (TTL=0 during transit)
                                                or
                                                type 11, code 1 (TTL=o during re-assembly)

Stef

On 3 Oct 2001, at 15:28, Paul Heinlein wrote:

>
> On Wed, 3 Oct 2001, Kevin Kaminski wrote:
>
> > What is a safe ICMP configuration in the real world that will not
> > affect client connectivity? Or maybe I should leave it more open as to
> > what is your policy on ICMP with Win2K and why?
>
> I don't use Windows for ICMP filtering (and hence don't know the type
> numbering used by Microsoft), but I typically allow only
>
> ECHOREPLY
> ECHO
> TIME_EXCEEDED
>
> on inbound connections unrelated to any established outbound
> connections. I haven't experienced any troubles with that configuration.
>
> -- Paul Heinlein <heinleinmeasurecast.com>
>

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