SecurityPortal: IPFilter: Free No More? | Linux Today

SecurityPortal: IPFilter: Free No More?

Written By
Web Webster
Web Webster
May 28, 2001

IPFilter is the foundation of firewalling for the BSD family. A
recent release included a change in the license that restricts
“derivative or modified works,” and a subsequent change that
redistribution is not permitted. This article maintains IPF is no
longer compliant with the Open Source Definition aising issues
similar to the issues raised by ssh being “taken proprietary.”

“Assuming Darren Reed is “correct” with his new
license, it is unlikely he will back down and return to the
original license, leaving *BSD developers with a dilemma on their
hands:

  • Ask for permission to use IPF, and assuming they get it stay
    with IPF, however at some point in the future Darren Reed may
    decide to not allow them to use IPF, leaving a gaping hole
    (literally, no firewalling code) in the affected system.
  • Possibly fork development of IPF, which is unfortunate because
    of the increased workload it will create and the potential
    divergence leading to incompatibilities (right now IPF is IPF, on
    Solaris, OpenBSD, FreeBSD, etc.).
  • Start from scratch, which would require even more work then
    simply forking IPF, and certainly cause a lot of grief for all
    concerned.”

Complete
Story

Web Webster

Web Webster

Web Webster has more than 20 years of writing and editorial experience in the tech sector. He’s written and edited news, demand generation, user-focused, and thought leadership content for business software solutions, consumer tech, and Linux Today, he edits and writes for a portfolio of tech industry news and analysis websites including webopedia.com, and DatabaseJournal.com.

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