Hi,

> I am using Checkpoint FW 1
> How do I make a rule to allow ICMP Destination Unreachable subtype
> "Fragmention Needed # 4" to go thr'.
> Checkpoint does not seem to let me specify subtypes.

If you go to the Services Manager in the GUI and select ICMP - you will
see the subtypes predefined by Check Point.
I don't know the type by heart at the moment, but you can define the
type you need by choosing the substring from this specific packet and
define a new ICMP Service.
If you don't have the literature, a sniffer may help. Try to compare it
with the other (predefined) ICMP Services.
Hope it helps at least a little bit.
Best regards
Matthias
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