The Sys admin’s daily grind: Nttcp

UNDER THE WEATHER

Author(s):

Some weather forecasts give you the temperature and a windchill adjustment, and a similar forecast for bandwidth would be helpful. If you feel the bandwidth is too low – and it always is – you need some kind of measuring instrument to reveal the truth.

If you are a DSL customer and want to find out whether you really are getting what you pay for, it makes sense to measure the actual bandwidth between two machines. If I set up an encrypted VPN tunnel, I’m obviously interested in the effect that encryption has on the transmission speed. Is the new antivirus proxy spoiling my customers’ surfing experience? Does the firewall appliance really provide the “wirespeed” the vendor promised? How fast is my wireless LAN with a massive concrete wall separating two access points? Is the PowerLAN connection between my laptop and my Linux video recorder fast enough for streaming? Nttcp answers all of these questions.

Read full article as PDF:

Charlys_Column.pdf  (95.53 kB)

Related content

  • Charly's Column: Weather Page

    To find out what the weather is like, sys admin columnist Charly Kühnast no longer needs to go outdoors get wet, blown away, frozen to death, or sunburned.

    more »
  • Charly's Column

    Parallel SSH is the name of an easy-to-configure tool that our resident sys admin, Charly, now routinely deploys whenever he needs to launch the same programs, copy the same files, or kill the same processes simultaneously on multiple computers.

    more »
  • Charly's Column

    Zsync handles a special case: large volume download files that change frequently but not drastically. Charly shows how this handy file fetcher can save you time and bandwidth.

    more »
  • Charly's Column

    Charly may be a traditionalist with sync-unfriendly duplicate home directories, but a little utility called Unison helps keep his data consistent . This month you’ll learn why Rsync sometimes isn’t enough.

    more »
  • Charly's Column

    If protocols were human beings, NNTP would be a kind and slightly confused person that always believes the best of other people – even if they drop trash in the mailbox. Postfilter gives NNTP a watchdog.

    more »
comments powered by Disqus

Visit Our Shop

Trial Subscription

Digital Subscription

Subscribe

Direct Download

Read full article as PDF:

Charlys_Column.pdf  (95.53 kB)

Tag Cloud

Administration Community Desktop Events Hardware Kernel Linux Mobile Programming Red Hat Software Ubuntu Web Development Windows free software

News

njobs Europe
What:
Where:
Country:
Njobs Netherlands Njobs Deutschland Njobs United Kingdom Njobs Italia Njobs France Njobs Espana Njobs Poland
Njobs Austria Njobs Denmark Njobs Belgium Njobs Czech Republic Njobs Mexico Njobs India Njobs Colombia