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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘Power User’ Category

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HOW-TO: Enable Hyper V on Windows 8.x Pro, and create a VM on it – YouTube

Posted by jpluimers on 2017/10/23

Below some steps and two videos about Hyper-V on Windows 8.x.

Though I prefer VMware myself (most of my infrastructure is VMware based, it works on Mac, Windows and bare-metal, and it has more user friendly host integration for Mac/Windows, especially with clipboard sharing and screen resolution), Hyper-V is not to be ruled out.

Hyper-V comes with Windows 7 professional and up, and supports the VHD/VHDX disk formats which are also used by Windows backup and Disk2Vhd.

So it is an excellent start to virtualize an existing physical PC and run it under a Windows host with relatively little effort.

New Disk2vhd V2.0 with vhdx support » TechNine.

Ensure that hardware virtualization support is turned on in the BIOS settings.  Save the BIOS settings and boot up the machine normally, At the Start Screen, swipe the right hand side of the screen and select the Search Charm. Type turn windows features on or off and select that item  Select and enable Hyper-V  If Hyper-V was not previously enabled, reboot the machine to apply the change.  NOTE: As a best practice, it’s a good idea to configure networking for the Hyper-V environment to support external network connections. Ensure that a virtual switch has been created and is functional.  Open the Virtual Switch Manager, found on the Actions panel in the Hyper-V Manager, by typing Hyper-V at the Start Screen.  Select “Virtual Switch Manager” in the Actions pane. Ensure that “External” is highlighted, and then click on the “Create Virtual Switch” button.  If more than one NIC in is present, ensure that the proper NIC is selected for use on the VM external network connections.

via

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Posted in BIOS, Boot, Power User | Leave a Comment »

I keep a separate gallery app around just to be able to upload specific pictu…

Posted by jpluimers on 2017/10/20

Smart tip:

I keep a separate gallery app around just to be able to upload specific pictures to +Google Photos​ because there is no option to do so from the Photos

Via: [WayBack] I keep a separate gallery app around just to be able to… … – Roderick Gadellaa – Google+

–jeroen

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Posted in Android Devices, Google, Google Photos, Power User | Leave a Comment »

HOW TO: Fix the Error loading /s.v00 Fatal error: 33 (Inconsistent data) in the VMware vSphere Hypervisor

Posted by jpluimers on 2017/10/20

This happened to me when the USB stick that I ran ESXi 5.5 off broke down: [WayBack/Archive.is] HOW TO: Fix the Error loading /s.v00 Fatal error: 33 (Inconsistent data) in the VMware vSphere Hypervisor.

I didn’t follow the steps as I moved on to new hardware that required ESXi 6.5 update 1. In retrospect, I probably should have fixed ESXi 5.5 as the ESXi 6.5 Web vSphere UI – apart of having far less features than the classic Windows vSphere Client UI )is ridden with bugs. More on those bugs later.

–jeroen

 

Posted in ESXi5.5, ESXi6.5, Power User, Virtualization, VMware, VMware ESXi | Leave a Comment »

Mikrotik Router OS 6.37.1 – scripts and schedules – what policies they need to run

Posted by jpluimers on 2017/10/19

minimum schedule and script policies: read/write/policy/test

minimum schedule and script policies: read/write/policy/test

A year later, Mikrotik still needs to update their documentation, so from my question at [WayBack] [Mikrotik follow-up needed] Router OS 6.37.1 – scheduled script cannot execute script – MikroTik RouterOS.

TL;DR:

  • use the same policies for scripts and schedules
  • use these policies as a minimum for scripts and schedules:
    • read
    • write
    • policy
    • test

Forum post:

I found out two things:

  1. the testFunctionScript needs at least these policies to call a function: read, write, policy, test
  2. a schedule needs at least the same permissions as a script in order to run the script at all

This is how the various permissions affect the testFunctionScript script:

  • no policies only allow :log info "testFunctionScript"; .
  • read allows the above and :local testFunctionJobs [/system script job print as-value detail]; which then is be logged with :log info "testFunctionJobs=$testFunctionJobs";
  • only write seems equivalent to no policies as it will only allow :log info "testFunctionScript";
  • read and write is equivalent to read
  • a lone policy or test policy (talk about confusion!) do not add functionality, so any combinations of just policy or testwith read and/or write get the same functionality as above
  • policy and test without any other seem equivalent to no policies as they result in only :log info "testFunctionScript"; to execute
  • the combined policies read, write, policy, test allow full script functionality including the function call and using the function call result

The above findings show that more logging is needed: the scheduler should log when (and why!) it does not have enough permissions to run a script. Right now you’re in the dark on when (and why!) a script isn’t ran by the scheduler.

The above findings show that these parts of the documentation need updating:

– http://wiki.mikrotik.com/wiki/Manual:Sc … repository (update with info about the above policy combinations)
– http://wiki.mikrotik.com/wiki/Manual:Ro … Properties (update with info about the above policy combinations)
– http://wiki.mikrotik.com/wiki/Manual:System/Scheduler (does not document anything about policies at all)

The various scripts (apply your mix of policies that you need)

## logon as user jeroenp

/system script environment remove [ /system script environment find where name="testFunction" ];
:global testFunction do={
  :local result [/system resource get uptime];
  :return $result;
}

/system script environment print detail where name=testFunction
# 0 name="testFunction" value=";(eval /system scheduler  (eval /localname=$result;value=(eval (eval /system resource getvalue-name=uptime))) (eval /returnvalue=$result))" 

:log info "direct execution of testFunction"

{
:global testFunction;
:local testFunctionType [:typeof testFunction];
:local testFunctionResult [$testFunction];
:log info "testFunctionScript";
:log info "testFunctionType=$testFunctionType";
:log info "testFunctionResult=$testFunctionResult";
:log info "testFunction=$testFunction";
}

/log print where buffer=memory && (message~"testFunction" || topics~"info")

/system script remove [ /system script find where name="testFunctionScript" ];
/system script add name=testFunctionScript owner=jeroenp policy=ftp,reboot,read,write,policy,test,password,sniff,sensitive,romon source=":global testFunction;\r\
    \n:log info \"testFunctionScript\";\r\
    \n:local testFunctionType [:typeof testFunction];\r\
    \n:local testFunctionResult [\$testFunction];\r\
    \n:log info \"testFunctionType=\$testFunctionType\";\r\
    \n:log info \"testFunctionResult=\$testFunctionResult\";\r\
    \n:log info \"testFunction=\$testFunction\";\r\
    \n"

:log info "execution of testFunction via testFunctionScript"

/system script run testFunctionScript

/log print where buffer=memory && (message~"testFunction" || topics~"info")

/system scheduler remove [ /system scheduler find where name="testFunctionScriptSchedule" ];
/system scheduler add interval=10s name=testFunctionScriptSchedule on-event=testFunctionScript policy=ftp,reboot,read,write,policy,test,password,sniff,sensitive start-date=sep/22/2015 start-time=12:02:37

:log info "execution of testFunction via testFunctionScriptSchedule calling testFunctionScript"
:delay 20s
/system scheduler disable testFunctionScriptSchedule

/log print where buffer=memory && (message~"testFunction" || topics~"info")

/system scheduler print detail where name="testFunctionScriptSchedule"

–jeroen

Posted in Development, Internet, MikroTik, Power User, RouterOS, routers, Scripting, Software Development | Leave a Comment »

Kristian Köhntopp – Google+

Posted by jpluimers on 2017/10/18

[WayBack] Kristian Köhntopp – Google+:

The S in IoT is for Security, and the U is for Update Policy.
 –jeroen

 

Posted in Development, Fun, Power User, Quotes, Software Development, WiFi | Leave a Comment »

Google’s AI can create better machine-learning code than the researchers who made it

Posted by jpluimers on 2017/10/17

[WayBack] Google’s AI can create better machine-learning code than the researchers who made it:

Google’s AutoML project has yielded significant advances in the ability for machine-learning systems to replicate and improve AI code.

Via:

–jeroen

Posted in AI and ML; Artificial Intelligence & Machine Learning, Development, LifeHacker, Power User, science, Software Development | Leave a Comment »

OnePlus OxygenOS built-in analytics: disable it as soon as you can

Posted by jpluimers on 2017/10/16

Remove the OnePlus Analytics service because of privacy violations:

Source: [WayBack] OnePlus OxygenOS built-in analytics

We take a look at the analytics built into the OxygenOS, the flavour of Android built by phone manufacturer OnePlus.

The analytics data is sent over https, but it contains way too much information on your privacy.

This also taught me about this interesting project: [WayBack] OWASP Zed Attack Proxy Project – OWASP

These tweets describe how to disabled it:

It was also present OnePlus Five, I found it through:

  1. Settings
  2. Developer Options
  3. Running Services
  4. OnePlus System Service
  5. OnePlusAnalyticsJobService

Until removed, it restarts at every boot.

Removing the service seems more permanent than the alternative [WayBack] Dear OnePlus, please stop spying on my phone:

  1. Settings
  2. Advanced
  3. Join user experience program
  4. toggle this option to off

It is unclear to me what turned that option on in the first place.

–jeroen

via: [WayBack] Welp. As a OnePlus owner, this makes me pretty damn unhappy :/ https://www.chrisdcmoore.co.uk/post/oneplus-analytics/ +Colm Buckley – Kristian Köhntopp – Google+

 

Posted in Android Devices, OnePlus Five, OnePlus Two, Power User, Privacy | Leave a Comment »

If Beyond Compare indicates “editing disabled” after starting from SourceTree, then your integration is wrong.

Posted by jpluimers on 2017/10/16

SourceTree 2.1 still doesn't recognise that Beyond Compare is installed.

SourceTree 2.1 still doesn’t recognise that Beyond Compare is installed.

I noticed that on my Mac, Beyond Compare wasn’t able to edit diffed files when it had been started from SourceTree. This struck me as odd since on Windows this worked fine. So I did a bit of digging and found out both SourceTee and I screwed up:

Editing Disabled

Luckily [WayBack] Zoë Peterson (lead developer on Beyond Compare and formerly Turbo Power Abbrevia project admin) had answered this before, and all these show “Editing disabled” in the user-interface:

Beyond Compare will disable editing of a file any of the following reasons:

  • It’s one of the input files in a 3-way merge
  • The comparison was cancelled
  • The comparison encountered an error (corrupt file, invalid character encoding, out of memory, gamma rays, etc)
  • The file format’s conversion settings don’t support converting back to the original format (MS Word, PDF)
  • The file is on a read-only “filesystem” (7zip/RAR/CHM archives, CD/DVD-ROMs)
  • A file or parent folder had editing explicitly disabled by the user in the session settings or using the /ro command line switches
  • The viewer itself doesn’t support editing (eg, Hex Compare)

Source: [WayBack] version control – Beyond Compare 3 editing disabled – Stack Overflow

So the last instruction should be:

Set both Visual Diff Tool and Merge Tool to Other, then set both the Diff Command and Merge Command to the value you obtained above (in my case /usr/local/bin/bcomp) and these arguments:

  1. Diff Command Arguments
    "$LOCAL" "$REMOTE"
  2. Merge Command Arguments
    "$LOCAL" "$REMOTE" "$BASE" "$MERGED"

Note that somewhere during 2.2, SourceTree has added Beyond Compare integration and fixed some of the issues, but there are still issues left:

No Editing Disabled

There is only one occasion where the UI does not show “Editing Disabled”, but where you cannot edit the file itself (you can only edit the current line in the line diff view at the bottom of the UI). Zoë mentioned that too:

…

Also, the Full Edit (F2) toggle in the Text Compare View menu switches between inline editing and line-based mode. If it’s disabled you can copy/delete whole lines and type in the line details edits at the bottom of the window, but the main windows won’t have a cursor, typing is disabled, and it will always select whole lines. Unlike the above items, this doesn’t show “Editing Disabled” in the status bar.

Source: [WayBack] version control – Beyond Compare 3 editing disabled – Stack Overflow

By default this setting is bound to the F2 key on Windows, so if you accidentally press that when Beyond Compare is active, you might be in for a surprise.

Screen shots:

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Posted in Beyond Compare, Encoding, Power User | Leave a Comment »

RSA keys by Infineon chips or libraries can be cracked fast; Severe flaw in WPA2 protocol leaves Wi-Fi traffic open to eavesdropping…

Posted by jpluimers on 2017/10/16

All of our house is wired by ethernet for a reason…

WPA2 Flawed. Once again, it turns out that designing something properly secure is really, really, REALLY hard.

[WayBack] Severe flaw in WPA2 protocol leaves Wi-Fi traffic open to eavesdropping https://arstechnica.com/… – Lars Fosdal – Google+

[Archive.is] If fixes exist, third party firmware will have it in days. Most OEMs, never. I do worry a lot about unfixable flaws in the wifi standards… – Kristian Köhntopp – Google+:

Dave reminds us that there is a reason why people mod the firmware of their Wifi routers, and that reason is actually now more critical than ever.

Via [WayBack] https://www.krackattacks.com/ has a FAQ. Some interesting questions from there:… – Kristian Köhntopp – Google+:

[WayBack] KRACK Attacks: Breaking WPA2 : This website presents the Key Reinstallation Attack (KRACK). It breaks the WPA2 protocol by forcing nonce reuse in encryption algorithms used by Wi-Fi.

 

Since we’re talking security, watch your RSA as it is way worse than the WPA2 one: [Archive.is]

We heard you liked the 10 WPA2 CVE’s, so »A 2nd major crypto vulnerability being disclosed… – Kristian Köhntopp – Google+ quoting

[WayBack] Dan Goodin‏ @dangoodin001: 2nd major crypto vulnerability being disclosed Monday involves millions of 1024- and 2048-bit RSA keys that are practically factorizable.

[WayBack] ROCA: Vulnerable RSA generation (CVE-2017-15361) [CRoCS wiki]

The time complexity and cost for the selected key lengths (Intel E5-2650 v3@3GHz Q2/2014):

  • 512 bit RSA keys – 2 CPU hours (the cost of $0.06);
  • 1024 bit RSA keys – 97 CPU days (the cost of $40-$80);
  • 2048 bit RSA keys – 140.8 CPU years, (the cost of $20,000 – $40,000).

[WayBack] New vulnerabilities found in RSA 1024 and 2048 bit keys. Estimated cost of cracking based on access to the Public key only: 1024 bit: $40 2048 bit: $20k… – Lars Fosdal – Google+

Jan Wildeboer did a nice explanation in laymen terms of both security issues published today:

 

–jeroen

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Posted in LifeHacker, Power User, Security, WiFi | Leave a Comment »

When you believe that you have a keylogger or some sort trojan | Official Apple Support Communities

Posted by jpluimers on 2017/10/16

We thought one of our Macs was compromised, but it wasn’t: it had too many web browsers open so it was crawling like a snake.

The below terminal commands and EtreCheck [Source: etresoft/EtreCheck: Source code for EtreCheck] helped to find out what was running:

kextstat -kl | awk '!/com\.apple/{printf "%s %s\n", $6, $7}'  

sudo launchctl list | sed 1d | awk '!/0x|com\.(apple|openssh|vix)|edu\.mit|org\.(amavis|apache|cups|isc|ntp|postfix|x)/{print $3}'  

launchctl list | sed 1d | awk '!/0x|com\.apple|edu\.mit|org\.(x|openbsd)/{print $3}'  
 
ls -1A /e*/mach* {,/}L*/{Ad,Compon,Ex,Fram,In,Keyb,La,Mail/Bu,P*P,Priv,Qu,Scripti,Servi,Spo,Sta}* L*/Fonts 2> /dev/null  

osascript -e 'tell application "System Events" to get name of every login item' 2> /dev/null

Source: [WayBack] I believe that I have a keylogger or some sort … | Official Apple Support Communities

–jeroen

Posted in Apple, Mac, MacBook, MacBook-Air, Power User | Leave a Comment »

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