# Re: gopher URLs (was Re: how to make progress ...)

Tim Berners-Lee (timbl@ptpc00.cern.ch)
Fri, 25 Mar 94 12:53:30 +0100

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    Date: Fri, 25 Mar 94 12:53:30 +0100

    From: Tim Berners-Lee <timbl@ptpc00.cern.ch>

    Message-Id: <9403251153.AA15118@ptpc00.cern.ch>

    To: hallam@alws.cern.ch

    Subject: Re: gopher URLs (was Re: how to make progress ...)

> > Date: Thu, 24 Mar 1994 21:20:21 +0100
> From: hallam@alws.cern.ch

> If you are going to close off ports then
> the only sensible way would be to forbid any access to the reserved port
numbers

> except by the `approved' protocol.

That is what is recommended in the current "Security Consierations"
section.

> This then has the difficulty that there are
> often good reasons to run servers on a non-standard port under 1024.

That is generally considered very bad practice. You never know what
protocol you might be declared to be posing as.

Tim

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