This patent was actually originally filed on 8 Jan 1993 and there were two intermediately issued patents that should be considered also.
Given the original priority date, to invalidate the patent with certitude, printed publications dated 8 Jan 1992 and earlier should be considered.
To infringe each and every element of the claims would have to be performed.
The method claims (e.g. 20) have 10 or so limitations with non-standard terminology so interpretation will require referring to the specification AND the prosecution history (publically available if you pay to have it copied from the patent office's files).
The more broadly Konrad, et. al., wants the claim read, the more likely older technologies, e.g. FTP/X Windows itself/etc., might invalidate the patent.
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