Andrew Cooke | Contents | Latest | RSS | Previous | Next

C[omp]ute

Welcome to my blog, which was once a mailing list of the same name and is still generated by mail. Please reply via the "comment" links.

Always interested in offers/projects/new ideas. Eclectic experience in fields like: numerical computing; Python web; Java enterprise; functional languages; GPGPU; SQL databases; etc. Based in Santiago, Chile; telecommute worldwide. CV; email.

Personal Projects

Choochoo Training Diary

Last 100 entries

Surprise Paradox; [Books] Good Author List; [Computing] Efficient queries with grouping in Postgres; [Computing] Automatic Wake (Linux); [Computing] AWS CDK Aspects in Go; [Bike] Adidas Gravel Shoes; [Computing, Horror] Biological Chips; [Books] Weird Lit Recs; [Covid] Extended SIR Models; [Art] York-based Printmaker; [Physics] Quantum Transitions are not Instantaneous; [Computing] AI and Drum Machines; [Computing] Probabilities, Stopping Times, Martingales; bpftrace Intro Article; [Computing] Starlab Systems - Linux Laptops; [Computing] Extended Berkeley Packet Filter; [Green] Mainspring Linear Generator; Better Approach; Rummikub Solver; Chilean Poetry; Felicitations - Empowerment Grant; [Bike] Fixing Spyre Brakes (That Need Constant Adjustment); [Computing, Music] Raspberry Pi Media (Audio) Streamer; [Computing] Amazing Hack To Embed DSL In Python; [Bike] Ruta Del Condor (El Alfalfal); [Bike] Estimating Power On Climbs; [Computing] Applying Azure B2C Authentication To Function Apps; [Bike] Gearing On The Back Of An Envelope; [Computing] Okular and Postscript in OpenSuse; There's a fix!; [Computing] Fail2Ban on OpenSuse Leap 15.3 (NFTables); [Cycling, Computing] Power Calculation and Brakes; [Hardware, Computing] Amazing Pockit Computer; Bullying; How I Am - 3 Years Post Accident, 8+ Years With MS; [USA Politics] In America's Uncivil War Republicans Are The Aggressors; [Programming] Selenium and Python; Better Walking Data; [Bike] How Fast Before Walking More Efficient Than Cycling?; [COVID] Coronavirus And Cycling; [Programming] Docker on OpenSuse; Cadence v Speed; [Bike] Gearing For Real Cyclists; [Programming] React plotting - visx; [Programming] React Leaflet; AliExpress Independent Sellers; Applebaum - Twilight of Democracy; [Politics] Back + US Elections; [Programming,Exercise] Simple Timer Script; [News] 2019: The year revolt went global; [Politics] The world's most-surveilled cities; [Bike] Hope Freehub; [Restaurant] Mama Chau's (Chinese, Providencia); [Politics] Brexit Podcast; [Diary] Pneumonia; [Politics] Britain's Reichstag Fire moment; install cairo; [Programming] GCC Sanitizer Flags; [GPU, Programming] Per-Thread Program Counters; My Bike Accident - Looking Back One Year; [Python] Geographic heights are incredibly easy!; [Cooking] Cookie Recipe; Efficient, Simple, Directed Maximisation of Noisy Function; And for argparse; Bash Completion in Python; [Computing] Configuring Github Jekyll Locally; [Maths, Link] The Napkin Project; You can Masquerade in Firewalld; [Bike] Servicing Budget (Spring) Forks; [Crypto] CIA Internet Comms Failure; [Python] Cute Rate Limiting API; [Causality] Judea Pearl Lecture; [Security, Computing] Chinese Hardware Hack Of Supermicro Boards; SQLAlchemy Joined Table Inheritance and Delete Cascade; [Translation] The Club; [Computing] Super Potato Bruh; [Computing] Extending Jupyter; Further HRM Details; [Computing, Bike] Activities in ch2; [Books, Link] Modern Japanese Lit; What ended up there; [Link, Book] Logic Book; Update - Garmin Express / Connect; Garmin Forerunner 35 v 230; [Link, Politics, Internet] Government Trolls; [Link, Politics] Why identity politics benefits the right more than the left; SSH Forwarding; A Specification For Repeating Events; A Fight for the Soul of Science; [Science, Book, Link] Lost In Math; OpenSuse Leap 15 Network Fixes; Update; [Book] Galileo's Middle Finger; [Bike] Chinese Carbon Rims; [Bike] Servicing Shimano XT Front Hub HB-M8010; [Bike] Aliexpress Cycling Tops; [Computing] Change to ssh handling of multiple identities?; [Bike] Endura Hummvee Lite II; [Computing] Marble Based Logic; [Link, Politics] Sanity Check For Nuclear Launch; [Link, Science] Entropy and Life

© 2006-2017 Andrew Cooke (site) / post authors (content).

Cygwin SSH Server on Windows 7 RC

From: "andrew cooke" <andrew@...>

Date: Tue, 30 Jun 2009 17:22:40 -0400 (CLT)

It appears that Cygwin's sshd works just fine on Windows 7.  In short, you
just follow the instructions at /usr/share/doc/Cygwin/openssh.README and
do a rebase.  A little more detail below:

I assume you can install Cygwin itself.  Once installed, all the following
was done with Admin privs (right click on the cygwin log and select "run
as administrator" or similar to start a shell that is the Window's
equivalent of root).

First, run the ssh-host-config script.  This is quite helpful, and wil
prompt for various issues.  If you need to re-run there's no need to
re-create files you created first time through (so answer "no" at the
appropriate prompts).

I can't remember exactly what choices I made, but they were the obvious
ones once you understand that you need to run sshd as a service, and that
a separate user has to be created to do this with the appropriate
permissions.

Eventually you will get to the end of the script.  You can then start the
sshd process with:

  cygrunsrv --start sshd

(and --stop to stop).  However, when I tried to connect that gave an error
(try ssh user@... and then tail /var/log/sshd.log).  To fix this you
need to do the magical rebaseall.  Again, this explains what is needed if
you run it, but in short: close all cygwin related processes (windows and
sshd); start a CMD prompt with admin privs; cd /c:\cygwin\bin; run "ash";
inside ash run "/usr/bin/rebaseall".

Finally, to connect from outside, you need to open the firewall.  This
involves finding the firewall (I just clicked at random on various GUIs
until I got a suitable link) and then adding a rule that allows access to
the TCP port 22.

With that done, and the service restarted, it appears to work.

Andrew

Extra Notes on Repeating Install

From: andrew cooke <andrew@...>

Date: Mon, 22 Feb 2010 15:51:52 -0300

I just reinstalled Windows (the preview is expiring, so I bought a
release version).  The notes above, apart from all the typing errors
(sorry) are pretty much correct.  The only think I was surprised to
see was that sshd *did* appear to work OK when first installed, but
failed once the system was rebooted (after which, rebaseall got it
back working again).

For my own reference, the following is also necessary if you are
running Windows in a VirtualBox VM and are using it as way to tunnel
over Cisco VPN (don't ask...):

- Make sure the network is "bridged" (the default creates a new DHCP
server inside VB which is amazingly confusing if you're not expecting
it)

- Remember to add shared folders to VB while the image is turned off
(you can't just add a network folder if you  haven't configured one
and you can't configure one if the image is running).

Andrew

Comment on this post