[Nottingham] SSH Madness

[Martin]

On 11/05/15 10:54, Jason Irwin wrote:
> This seems apropos my reverse-tunnel question.
> http://www.reddit.com/r/linux/comments/35jjwu/ssh_tunnel_nesting_generating_200mb_of_traffic/
> 
> Refers to a vid which shows how 1 byte becomes 200mb if you tunnel it
> enough.

That's a good one!

The pertinent summary comments from there are:


#####

Why does 16 nested tunnels generate 200MB of traffic for 1 byte? And can
that be reduced? That seams worse than O(2n) for memory. I would expect
tunneling be more linear for network traffic memory with each additional
nest.


To avoid leaking too much information about the contents of a packet,
SSH pads them to a constant size.

Add padding, add another header, and then pad a bit more, and you get
exploding sizes.

#####



And on that note, rather ironically for how to explode a simple few
lines of explanatory text into multi-megabytes of video and needless
minutes going ga-ga if you were to watch the vid:


#####

Why the **** is this a video? What is wrong with people these days? Are
they afraid to put their thought in writing?

Anyone cares to do a TL/DW for this?


what's really **** up is programming tutorials over video, where you
literally watch someone typing, and of course you can't copy'n'paste, or
even read the text most of the time. but its a needy generation with
limited attention span i guess.


I never really get how a video is better though, it just seems like a
much worse way to convey that kind of information.


seems like the worst possible way doesn't it, buts its popular. people
frightened of books it seems!

#####


[Minor rant]

Foisted by Marketing educated dumb madness?...

... And for some users I'm working with at present, the all-encompassing
way of only ever seeing a GUI does seem to have rendered them incapable
of reading! Anything more complicated than a cartoon series of
screenshots leaves them like a gaggle of lost children.

And if the screenshots do not look *exactly* like their laptop screen,
they are left bewildered and lost...

Yet another example of how a few words or even a one liner gets expanded
into the thousands of words of pictures that then must be reworked for
any/every minor change.

There must be a better way. Educate certain users to read?...

[/Minor Rant]


All good fun!

Cheers,
Martin


GUI: Graphical (point 'n' click) User Interface


-- 
- ╔═══════════════════╦══════════════════════════════════════════╗
- ║   Martin Lomas    ║ OpenPGP (GPG/PGP) Public Key: 0xCEE1D3B7 ║
- ║ martin@ ml1 co uk ║ Import from   hkp://subkeys.pgp.net   or ║
- ║ ----------------- ║ http:// ml1 .co .uk/martin_ml1_co_uk.gpg ║
- ╚═══════════════════╩══════════════════════════════════════════╝