That means that you cannot take Freeware, modify or extend it, and then sell it as Commercial or Shareware software. Assume copyright protection unless the Public Domain notification is stated. Lack of copy-protection does NOT constitute permission to copy software without authorization of the software copyright owner. Software acquired by colleges and universities is usually covered by licenses. Such licenses cover software whether installed on stand-alone or networked systems, whether in private offices and rooms, or in public clusters and laboratories.
Some institutional licenses permit copying for certain purposes.
The license may limit copying, as well. Consult C.I.S. to be sure if you are unsure about the permissible use of a particular software product. You should not loan software without the specific permission of the copyright holder. Some licenses may even restrict the use of a copy to a specific machine, even if you own more than one system. In general, licenses usually do NOT allow the software to be installed or resident on more than a single machine, or to run the software simultaneously on two or more machines.