When using SSD drives on Linux, mind the discard option in mnt and the fstrim command: [WayBack] Solid state drives in Linux: Enabling TRIM for SSDs | Opensource.com
–jeroen
Archive for the ‘Hardware’ Category
Solid state drives in Linux: Enabling TRIM for SSDs – fstrim command and mount option discard | Opensource.com
Posted by jpluimers on 2018/04/06
Posted in *nix, *nix-tools, Hardware, Power User, SSD, Trim | Leave a Comment »
Urgent security advisory – MikroTik – upgrade to 6.41.3 if you can change your bridge implementation, ensure SMB and WWW are not WAN accessible
Posted by jpluimers on 2018/03/31
I both understand the [WayBack] Urgent security advisory – MikroTik and the users reluctant to upgrade: Mikrotik has a history of updates breaking existing behaviour and underdocumenting features and release notes.
The attack is over the www or www-ssl services which by default run on port 80 and 443. You can see on which networks they are bound using this example from the terminal:
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Posted in Hardware, Internet, MikroTik, Network-and-equipment, Power User, routers, Security, WinBox | Leave a Comment »
Interesting ways to obtain MTU and MSS sizes – via Troubleshooting Bitbucket Cloud MTU/MSS issues – Atlassian Documentation
Posted by jpluimers on 2018/03/29
I will probably need the netstat/tcpdump/wireshark tricks here in the future: [WayBack] Troubleshooting Bitbucket Cloud MTU/MSS issues – Atlassian Documentation
via: [WayBack] Atlassian Bitbucket Status – Network maintenance; MTU/MSS changes coming
–jeroen
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Posted in Communications Development, Development, Internet protocol suite, Network-and-equipment, Power User, TCP | Leave a Comment »
Packet Sender is a good tool when debugging protocols: free utility to send & receive network packets. TCP, UDP, SSL
Posted by jpluimers on 2018/03/07
It was fitting to bump into [WayBack] Packet Sender is a good tool when debugging protocols…” Written by Dan Nagle… – Lars Fosdal – Google+ on the day presenting [WayBack] Conferences/Network-Protocol-Security.rst at master · jpluimers/Conferences · GitHub
It also means that libssh2-delphi is getting a bit more love soon and will move to github as well after a conversion from mercurial.
Some of the things I learned or got confirmed teaching the session (I love learning by teaching):
- Automate the heck out of your job and new work finds you
- There is great integration for [WayBack] Bot Users | Slack which can hugely help you in status monitoring
- If you manage many domains, which might be troublesome to the default “
certbotclient”, so you might want to look into different [WayBack] ACME Client Implementations – Let’s Encrypt – Free SSL/TLS Certificates especially if you run nginx on Alpine Linux (but note you then need [WayBack] license_update.patch\acme-client\community – aports – Main aports tree to avoid [Archive.is] [400] does not match current agreement URL – Help – Let’s Encrypt Community Support)
Here is some more info:
- Blurb: “[a] free utility to send & receive network packets. TCP, UDP, SSL.”
- [WayBack] Packet Sender – Free utility to for sending / receiving of network packets. TCP, UDP, SSL.
- [WayBack] The latest Tweets from Dan Nagle (@NagleCode). Principal SW Engineer @HARMAN_Pro. Speaker. Author packetsender.com, paydowncalc.com, cryptoknife.com, github.com/dannagle . Huntsville, AL,
- [WayBack] Packet Sender – Send / Receive TCP / UDP – Android Apps on Google Play
- [WayBack] dannagle (Dan Nagle) · GitHub dannagle has 23 repositories available. Follow their code on GitHub.
–jeroen
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Posted in Communications Development, Delphi, Development, Encryption, Hardware, Harman Kardon, Home Audio/Video, HTTP, https, HTTPS/TLS security, Internet protocol suite, Let's Encrypt (letsencrypt/certbot), OpenSSL, Power User, Security, Software Development, TCP, TLS | Leave a Comment »
mikrotik CRUD examples for all APIs · danikf/tik4net Wiki
Posted by jpluimers on 2018/01/25
tik4net – Connect from .NET C# application to mikrotik router via ADO.NET like API or enjoy O/R mapper like highlevel api.
Source: CRUD examples for all APIs · danikf/tik4net Wiki
[Archive.is] C# API – tik4net on GitHub – Page 2 – MikroTik RouterOS
–jeroen
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Posted in .NET, C#, Development, MikroTik, RouterOS, routers, Scripting, Software Development | Leave a Comment »
Best SSDs: Holiday 2017
Posted by jpluimers on 2018/01/15
Not just a great overview for the season, but also a good overview on what the state of the art in various SSD products is: [WayBack] Best SSDs: Holiday 2017.
Recommended reading when you are looking for SSDs
–jeroen
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Posted in Hardware, Power User, SSD | Leave a Comment »
hardware rec – When to stop using a hard drive? What rules/software apply? – Super User
Posted by jpluimers on 2017/12/22
A kind of repeat of a 6 year old post, as by now this has much more information: [WayBack] hardware rec – When to stop using a hard drive? What rules/software apply? – Super User.
It is a continuation for another drive of my 2011 post hard drive – When to stop using a HDD? What rules/software apply?.
Basically I was unlucky receiving a brand new drive that appeared exceptionally slow and doing some ticking.
So I ran these on it:
- ([WayBack] Download) [WayBack] HDTune
- (x86 Download / x64 Download) [Archive.is] GSmartControl
–jeroen
Sorry for the “missed schedule”, but WordPress.com is acting up again:
Since I ran this machine on Windows and I didn’t have time to run locally, these are the tools I used:
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Posted in Hardware, LifeHacker, Missed Schedule, Power User, SocialMedia, WordPress | Leave a Comment »
CPU FAN header is called FANA on SuperMicro X10SRI-F and X10SL7-F – Onboard LSI
Posted by jpluimers on 2017/12/22
The SuperMicro X10SRI-F and X10SL7-F boards are very similar, so I was happy that [WayBack] SuperMicro X10SL7-F – Onboard LSI pointed out where the CPU fan was: it’s header FANA which isn’t exactly clear form the X10SRI-F motherboard PDF manual [WayBack]:
FANA is the CPU fan connector
(I connected my CPU fan to the closest fan connector and everything works like a charm, but I’m still curious).
–jeroen
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Posted in Hardware, Mainboards, Power User | Leave a Comment »
OpenBSD on PC Engines APU2 | Hacker News
Posted by jpluimers on 2017/11/21
Via [WayBack] OpenBSD on PC Engines APU2 | Hacker News and [WayBack] Ilya S – Google+ commenting at [WayBack] I am thinking about moving to BSD as my main OS – Joe C. Hecht – Google+:
Just in case I want to build my own router on PC Engines APU2 hardware: installation instructions at [Wayback/Archive] elad/openbsd-apu2: OpenBSD on the APU2
–jeroen
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Posted in APU, Development, Hardware, Hardware Development, Internet, Network-and-equipment, Power User, routers | Leave a Comment »
OS X El Capitan: Open an app from an unidentified developer
Posted by jpluimers on 2017/11/17
The first trick works for WinBox 3.7 on Mac [download], the second doesn’t.
First trick:
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Posted in Apple, Hardware, iMac, Mac, Mac OS X / OS X / MacOS, MacBook, MacBook Retina, MacBook-Air, MacBook-Pro, MacMini, MikroTik, Network-and-equipment, OS X 10.11 El Capitan, Power User, routers, WinBox | Leave a Comment »
The Wiert Corner - irregular stream of stuff 