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Posted by jpluimers on 2020/07/15
Cool tool: [WayBack] GitHub – gamelinux/passivedns: A network sniffer that logs all DNS server replies for use in a passive DNS setup via [WayBack] How to log all my DNS queries? – Unix & Linux Stack Exchange (thanks mxmlnkn!).
It listens on port 53 for DNS requests then logs them to a file on regular intervals aggregating similar requests.
Usage is simple:
Posted in *nix, *nix-tools, Development, DevOps, Infrastructure, Linux, openSuSE, Power User, SuSE Linux, Tumbleweed | Leave a Comment »
Posted by jpluimers on 2020/07/15
Interesting to see is how much is not about actual coding, but of tooling, testing, processes, operations and mindset.
[WayBack] SAFECode updates its guide on best secure software development practices – SD Times
PDF: [WayBack] SAFECode releases Fundamental Practices for Secure Software Development: Essential Elements of a Secure Development Life Cycle Program (Third Edition).
Table of Contents:
Page;Topic 4; Executive Summary 5; Introduction 5; Audience 6; SAFECode Guidance and Software Assurance Programs 7; Application Security Control Definition 7; Actively Manage Application Security Controls 9; Design 9; Secure Design Principles 10; Threat Modeling 11; Develop an Encryption Strategy 12; Standardize Identity and Access Management 14; Establish Log Requirements and Audit Practices 15; Secure Coding Practices 15; Establish Coding Standards and Conventions 15; Use Safe Functions Only 17; Use Code Analysis Tools To Find Security Issues Early 17; Handle Data Safely 20; Handle Errors 21; Manage Security Risk Inherent in the Use of Third-party Components 22; Testing and Validation 22; Automated Testing 24; Manual Testing 27; Manage Security Findings 27; Define Severity 28; Risk Acceptance Process. 29; Vulnerability Response and Disclosure 29; Define Internal and External Policies 29; Define Roles and Responsibilities 30; Ensure that Vulnerability Reporters Know Whom to Contact 30; Manage Vulnerability Reporters 30; Monitor and Manage Third-party Component Vulnerabilities 31; Fix the Vulnerability 31; Vulnerability Disclosure 32; Secure Development Lifecycle Feedback 33; Planning the Implementation and Deployment of Secure Development Practices 33; Culture of the Organization 33; Expertise and Skill Level of the organization 34; Product Development Model and Lifecycle 34; Scope of Initial Deployment 35; Stakeholder Management and Communications 35; Compliance Measurement 36; SDL Process Health 36; Value Proposition. 37; Moving Industry Forward 37; Acknowledgements 38; About SAFECode
–jeroen
Posted in Development, Security, Software Development | Leave a Comment »
Posted by jpluimers on 2020/07/14
A while back, while using “git svn”, on a Windows system, I got [Archive.is] “error: invalid object 100644” “git svn” – Google Search after statements like this:
# git svn rebase
error: refs/remotes/git-svn does not point to a valid object!
error: invalid object 100644 ac7df132f5bd7d639fc525f1f0204a546658d0c5 for 'Source/ToDoList/GX_ToDo.pas'
fatal: git-write-tree: error building trees
write-tree: command returned error: 128
# git svn fetch
error: refs/remotes/git-svn does not point to a valid object!
error: invalid object 100644 ac7df132f5bd7d639fc525f1f0204a546658d0c5 for 'Source/ToDoList/GX_ToDo.pas'
fatal: git-write-tree: error building trees
write-tree: command returned error: 128
In my case, regular git operations (like branching, committing, pushing, etc) worked fine, but git svn would fail.
One problem was that [Archive.is] “error: refs/remotes/git-svn does not point to a valid object” – Google Search only returned one un-meaningful result: [WayBack] gist:87613 · GitHub.
Luckily, I had a backup (though it was from a while ago as that VM had not been in use for quite some time) which is the first part in [WayBack] Git FAQ – Git SCM Wiki: How to fix a broken repo?.
Since I was still interested finding out how to resurrect, just in case this happens at a time the backups do not go back far enough, I tried the steps below.
The very first fixing step is to ensure you can quickly restore things, or even better: operate on a copy of the broken pieces. On Windows, robocopy /mir is my friend for this, in Linux rsync -avloz (although on some systems, -z crashes).
Find out what problems you have, and in which order to fix them. Otherwise you will break more stuff and take longer to fix it.
In this case, two things failed: one on the git side, and one on the git svn side. Since git svn depends on git, the best approach is to fix the git problem first, then the git svn thing.
Posted in CertUtil, Development, DVCS - Distributed Version Control, git, Hashing, md5, Power User, Security, SHA, SHA-1, SHA-256, SHA-512, Software Development, Source Code Management, Subversion/SVN, Windows | Leave a Comment »
Posted by jpluimers on 2020/07/14
Malcolm Lewis [WayBack] came with these interesting pastes for a rudimentary battery backup servicing USB powered devices:
Since both expired, here is some more elaboration with Amazon.com links:
From the picture linked above (full one at the bottom of the post): a switch is missing from the parts list (:
Note that this is only the hardware parts, and no measurements of the voltage from the Raspberry Pi. So it is a battery backup, not a UPS.
For a UPS kind of functionality, you need more hardware (measure voltage to assess when to safely shut down, reset circuitry for when power comes up), and software (so the devices can shutdown).
After IRC chatting with Lewis (see his [WayBack] profile), this is how they should be connected:
OUT pins +/- to your LM2577 IN pins+/-
Connections to the adjustable LM2577 step-up converter having a max current of 3A
If you want to measure both voltage and current, then a combined piece like Voltmeter Amperemeter Dual Digital Volt Amp Meter Messgerät 100V 10A is very convenient. Most of these do not come with schematics, so here is one:
–jeroen
Posted in 18650, Batteries, Development, Hardware Development, Li-Ion, Power User | Leave a Comment »
Posted by jpluimers on 2020/07/14
Interesting:
How does WCF, a 13-year-old mega-abstraction framework hold up against the modern, lean, ASP.NET Core? You’d be surprised.
Source: [WayBack] Is WCF faster than ASP.NET Core? Of course not! Or is it?
Via: [WayBack] Interesting read! – Ondrej Kelle – Google+
–jeroen
Posted in .NET, Development, Software Development | Leave a Comment »
Posted by jpluimers on 2020/07/13
A very insightful talk: “Marrying U-Boot, uEFI and grub2 – Alexander Graf – openSUSE…”
Booting is hard. Booting in the ARM world is even harder. State of the art are a dozen different boot loaders that may or may not deserve that name. Each gets configured differently and each has its own pros and cons.
As a distribution this is a nightmare. Configuring each and every one of them complicates code that really should be very simple.
To solve the problem, we can just add another layer of abstraction (grub2) on top of another layer of abstraction (uEFI) on top of another layer of abstraction (u-boot). Follow me on a journey on how all those layers can make life easier for the distribution and how much fun uEFI really is.
After this talk, you will know how ARM systems boot, what uEFI really means, how uEFI binaries interact with firmware and how we are going to move to uEFI based boot on openSUSE for ARM.
Usually known as agraf on-line, [WayBack] Alexander Graf – Open IoT & ELC 2017 is an impressive guy:
Alexander Graf
SUSE
KVM Wizard
Nürnberg Area, GermanyAlexander started working for SUSE about 9 years ago. Since then he worked on fancy things like SUSE Studio, QEMU, KVM and openSUSE on ARM. Whenever something really useful comes to his mind, he tends to implement it. Among others he did Mac OS X virtualization using KVM, nested SVM, KVM on PowerPC and a lot of work in QEMU for openSUSE on ARM. He is the upstream maintainer of KVM for PowerPC, QEMU for PowerPC and QEMU for S390x.
Slides: [WayBack] Marrying U-Boot, UEFI and grub.pdf
There are 2 videos on YouTube (view them below):
Boot sequence:
Alexander pushed the U-Boot stuff up stream, but the FreeBSD team was the first to actually boot a full OS from it.
Relations:
U-boot:
Connectmd.b (shows bytes starting at memory address for a certain length)config.txt is used for that; specs at [WayBack] config.txt – Raspberry Pi Documentation–jeroen
References:
Images
Posted in *nix, *nix-tools, openSuSE, Power User, SuSE Linux, Tumbleweed | Leave a Comment »
Posted by jpluimers on 2020/07/13
I wish this keyboard was still on the market [WayBack] ThinkPad USB Keyboard With TrackPoint – Overview.
Known as 55Y9053, 55Y9003 and 57Y4641 (and a few others like the English/EUR 55Y9042 if you count the various localised layouts at [WayBack] ThinkPad USB Keyboard with TrackPoint – Service parts), it was one of the best keyboards made apart from the big delete key (that was better in the predecessor, but that one lacked windows keys: [WayBack] Lenovo ThinkPad USB Keyboard Review | NotebookReview).
It is about the same as the Thinkpad25, which added a touchpad: [WayBack] The 25th-anniversary ThinkPad: Every laptop should add some retro appeal | Ars Technica Review: A seven-row keyboard? Matte screen? TrackPoint? The all-business black body? Swoon
--jeroen
Posted in History, Power User, ThinkPad, UltraNav keyboards | Leave a Comment »
Posted by jpluimers on 2020/07/13
How retro can you get? [WayBack] Level 29: The BBS gets very far: it runs on an Apple IIgs and provides access via modem (via a landline!), telnet or web to the same text interface.
Web access via [WayBack] Shell In A Box
Welcome to the *NEW* Level 29 BBS!
916 965 1701 - bbs.fozztexx.com
. . _, _,
| _ . , _ | '_) (_)
|___(/, \/ (/,| /_. |
The official BBS of
RetroBattlestations.com
Enter your username or NEW or VISITOR
User:
It
Related:
Via: [WayBack] Got this TV yesterday at a garage sale and hooked up the Apple II through the Sup R Mod and installed the Hayes Micromodem IIe to call Level 29 BBS. No … – Chris Osborn – Google+
–jeroen
Posted in 6502, BBS, History | Leave a Comment »
Posted by jpluimers on 2020/07/10
I am still a bit ambivalent on remapping keys on a keyboard, mainly because of two reasons:
Just in case I am going to use it:
$ brew install caskroom/cask/karabiner (both need the root/administrator password as they hook deeply in your machine).–jeroen
Via:
Posted in Keyboards and Keyboard Shortcuts, Power User | Leave a Comment »
Posted by jpluimers on 2020/07/10
Hopefully by now the extensions below still work, as Google removed the “View Image” button in Google Image Search a few years back.
When not: these might help finding an updated method (:
Via:
Google’s image-based search engine has been a staple of the internet for more than a decade. But this morning it got a little less useful: in addition to making the reverse image search tool harder to find, the “Show Image” button has disappeared.
Getty drops lawsuit against Google in exchange for controversial image search changes.
–jeroen
Posted in Google, GoogleImageSearch, GoogleSearch, Power User | Leave a Comment »
The Wiert Corner - irregular stream of stuff 
