[Info-vax] Change Mouse Pointer Color

[Stephen Hoffman]

On 2018-12-03 19:28:34 +0000, Jairo Alves said:

> I always thought DECWindows was just for presenting purposes.  But, 
> then,is DECWindows the VMS implementation of X in the same way that 
> CSWS is the OpenVMS implementation of Apache?

X is the client libraries and the server display and the local 
transport and the remote network transport, and various conversion and 
security-related functions, and a pile of other details.  It's an RPC 
with an attached windowing system, and more than a few installations 
have been built to work around a whole lot of what X has provided over 
the years, too.

Some X-related reading:

https://en.wikipedia.org/wiki/X_Window_System

And a presentation on some of the issues with X:

https://www.youtube.com/watch?v=cQoQE_HDG8g

> The other day we did a security test to find the obvious, one can do a 
> man in the middle attack to change most configurations in a PLC 
> provided the subject is within its LAN. But, what PLCs have 
> cryptography? Not evento protect its connection with the programming 
> software.

There are PLCs with TLS.  And ModBus published a spec for security a 
few months back; for ModBus traffic via TLS.

But then, one exploited Windows 2000 or Windows XP or 
equivalently-ancient Linux or OpenVMS box can ruin your whole network, 
too.


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