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

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Archive for August 13th, 2025

In case I need a small 5-port managed switch that can do port-mirroring: GS305E | Easy Smart Managed Essentials Switch | NETGEAR Support

Posted by jpluimers on 2025/08/13

[Wayback/Archive] GS305E | Easy Smart Managed Essentials Switch | NETGEAR Support which can do many-to-one port mirroring.

This is a newer and cheaper hardware revision than the:

  • GS105Ev2 (which is managed and can do port-mirroring, and is confusingly sold as GS105E-200) which in Germany already is end-of-life
  • GS105Ev1 (which is unmanaged and cannot do port-mirroring and is confusingly sold as GS105E-100) which is end-of-life but still sold

Via [Wayback/Archive] Everyone Should Have One of These – EASY Packet Capture! – YouTube who explains very well why you need a switch that can do port-mirroring, then recommends the GS105E but forgets to mention:

  • there are different revisions of the GS105E with the above drawbacks
  • there is GS305E

Related:

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Posted in Blue team, Communications Development, Development, Ethernet, Hardware, Internet protocol suite, Network-and-equipment, Power User, Red team, Security, Software Development, TCP, UDP | Leave a Comment »

Comment Only What the Code Cannot Say | by Kevlin Henney | Medium

Posted by jpluimers on 2025/08/13

Often after having taught a topic for decades, somebody rephrases it in a beautiful concise way:

[Wayback Comment Only What the Code Cannot Say | by Kevlin Henney | Medium

Kevlin has the same two quotes I have included teaching software quality for a long time:

In The Elements of Programming Style, Kernighan and Plauger note that
A comment is of zero (or negative) value if it is wrong.
Instead of writing apologies and apologia, follow Kernighan and Plauger’s advice from the 1970s:
Don’t comment bad code — rewrite it.

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Posted in Agile, Code Quality, Code Review, Development, Software Development | Leave a Comment »