The Wiert Corner – irregular stream of stuff

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

  • My badges

  • Twitter Updates

  • Pages

  • All categories

  • Enter your email address to subscribe to this blog and receive notifications of new posts by email.

    Join 1,839 other subscribers

Archive for the ‘Network-and-equipment’ Category

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: [WayBackTroubleshooting Bitbucket Cloud MTU/MSS issues – Atlassian Documentation

via: [WayBackAtlassian Bitbucket Status – Network maintenance; MTU/MSS changes coming

–jeroen

Posted in Communications Development, Development, Internet protocol suite, Network-and-equipment, Power User, TCP | 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.isC# API – tik4net on GitHub – Page 2 – MikroTik RouterOS

–jeroen

 

 

Posted in .NET, C#, Development, MikroTik, RouterOS, routers, Scripting, Software Development | Leave a Comment »

OpenBSD on PC Engines APU2 | Hacker News

Posted by jpluimers on 2017/11/21

Via [WayBackOpenBSD on PC Engines APU2 | Hacker News and [WayBackIlya 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

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:

Read the rest of this entry »

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 »

Some links on isolating parts of networks with Mikrotik

Posted by jpluimers on 2017/11/10

On my research list so I can do proper LoT.

–jeroen

Read the rest of this entry »

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

How to connect S+DA0003 using SFP between MikroTikCRS226 and MikroTikCCR1009

Posted by jpluimers on 2017/10/30

Mikrotik and SFP versus SFTP+ is always confusing especially as the text on their equipment and their documentation doesn’t show well which situations work.

Equipment text is further on, this is their text searchable documentation:

As usually, a long search in the forums reveals the background information:

[WayBackSFP in SFP+ slot – MikroTik RouterOS: 10Gb SFP+ sockets are usually backward compatible with SFP, but this is not guaranteed.

There are two tricks involved to get an SFP connection between these devices working:

Read the rest of this entry »

Posted in Internet, MikroTik, Power User, routers | Leave a Comment »

Need to give this some thought: multi-LAN on Mikrotik

Posted by jpluimers on 2017/10/27

Maybe for my LoT (LAN of Things): having multiple (even many) local LANs some each with their section of LoT equipment nicely separated and partially being able to talk to some of the other LANs or part of the outside world.

Some links that might help me getting this set up:

Read the rest of this entry »

Posted in Development, Hardware, MikroTik, Network-and-equipment, Power User, RouterOS, routers, Scripting, Software Development, WinBox | Leave a Comment »

Internet of default passwords … – did it improve at all?

Posted by jpluimers on 2017/10/26

Just over a year after this got posted, I wonder what the current state of affairs is. Did it get a lot worse or just a little (as when writing this in November 2016 my guess is that it won’t get any better soon):

To repeat +Thomas Mueller ‘s words:

Internet of default passwords …
Sounds bad until you realize that it’s even worse. There are millions of devices out there that can be or have already been compromised and can get their owners into deep shit, without their owners even doing anything wrong. And keeping your virus scanner up to date won’t help at all (it doesn’t really protect your PC either, but that’s a different story).

Just watch the first 10 minutes of the video, but be warned, it might ruin your day.

Via +Joe C. Hecht:

I found this to be a superior product – If you are into security, this episode was worth a listen. I hear they are into talking about home servers too. I like that.

A new TechSNAP is OUT: http://bit.ly/tsnap288

The Internet of Things is the Internet of Terrible, we’ll round up the week’s stories & submit the TechSNAP solution to you the audience. Plus the security cost of Android fragmentation, great questions & a packed round up!

Source:

Read the rest of this entry »

Posted in IoT Internet of Things, Network-and-equipment, Opinions, Power User | Leave a Comment »

MAC address ranges safe for testing purposes (Locally Administered Address)

Posted by jpluimers on 2017/10/25

Similar to IP ranges for private networks that are safe for testing

  • 10.0.0.0/8 (255.0.0.0)
  • 172.16.0.0/12 (255.240.0.0)
  • 192.168.0.0/16 (255.255.0.0)
  • fd00::/8

there are also locally administered MAC address ranges safe for testing

  • x2:xx:xx:xx:xx:xx
  • x6:xx:xx:xx:xx:xx
  • xA:xx:xx:xx:xx:xx
  • xE:xx:xx:xx:xx:xx

Thanks to [WayBack] Sam and [WayBackPeter for answering.

–jeroen

References:

Posted in Ethernet, Internet, Network-and-equipment, Power User | Leave a Comment »

Delay running a script after restart – MikroTik RouterOS

Posted by jpluimers on 2017/10/24

Start Time special value `startup`

Start Time special value `startup`

There is a special startup value for “Start Time” you can enter which makes it runs once 3 seconds after reboot.

If by then your router isn’t fully “up” yet (i.e. waiting for PPPoE or DHCP network settings), then inside the script you can perform a delay global command as shown in the code fragment from the below forum post.

Don’t you love how people still tend to both repeat themselves and abbreviate stuff even though they have code completion at their disposal?:

{:delay 10};
/log print file=([/system identity get name] . "Log-" . [:pick [/system clock get date] 7 11] . [:pick [/system clock get date] 0 3] . [:pick [/system clock get date] 4 6]); \
/tool e-mail send to="xxx@xxx.com" subject=([/system identity get name] . " Log " . \
[/system clock get date]) file=([/system identity get name] . "Log-" . [:pick [/system clock get date] 7 11] . \
[:pick [/system clock get date] 0 3] . [:pick [/system clock get date] 4 6] . ".txt"); :delay 10; \
/file rem [/file find name=([/system identity get name] . "Log-" . [:pick [/system clock get date] 7 11] . \
[:pick [/system clock get date] 0 3] . [:pick [/system clock get date] 4 6] . ".txt")]; \
:log info ("System Log emailed at " . [/sys cl get time] . " " . [/sys cl get date])

Read the rest of this entry »

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