yes, I agree with that.. It could easily be a hash, i basically consider them to be the same thing... but I dont know any hashing functions which produce 16 bit results... md5 is much longer than that (128?), and sha is even longer...
im not framiliar with any that produce this short of a checksum/hash... they could have easily devised their own checksum too, which would be very very effective at stopping people like me (:
Another possibility is it could be using some exchanged key as part of its computation... there are two 4 byte components of the first packet exchange (the only two packets without these checksums) that seems to be data of some sort... I figured it was some encryption key or something, and it could be easily used to compilcate my life.
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