There is a topic in the forums that mentions this file, try a forum search.
Thanks David,
Unfortunately a search for
AswLgNt did not show any items other than my own query.
A search for
Asw100m returns a single request asking if this file is genuine, and an answer from Igor that it is.
That doesn't answer my question as to what it's purpose is, or what Firewall clearance it should be given, so I am still looking for answers.