Infrastructure Engineering: Systems, Networking, Databases & the Internet
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Network architecture, internet protocols, database and systems design, and the infrastructure engineering decisions that determine whether real production systems hold up under load.
Mac Wireshark MCP Setup for Claude Desktop: Full Guide
If you’re like me, the idea of doing anything twice will make you break out in a cold shiver. For my Claude desktop, I often need network pcap (packet capture) to unpack something that I am doing. So the script below installs wireshark, and then the wireshark mcp and then configures Claude to use it. […]
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Security Vibing: Why Teams Keep Sacrificing to the Risk Gods Instead of Managing Real Risk
Something interesting happens inside large organisations when a new technology appears and nobody is quite sure how dangerous it is: people start sacrificing things. A feature gets disabled, a setting gets locked down, and a capability gets removed. Another approval step gets inserted into the process, or someone quietly updates a policy. Everyone feels slightly […]
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Find Max MTU Size on Mac OS X Using Ping (No Fragmentation)
If you have ever tried to use jumbo packets, or trace a weird slowness on the network – one of the things that frequently comes up is packet fragmentation. This is basically where a source machine is sending bigger packets than can be consumed along its pathway to a destination machine. This means the packets […]
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Cloudflare Free Tier Review: Why It Works for Enterprise
By Andrew Baker, CIO at Capitec Bank There is a truth that most technology vendors either do not understand or choose to ignore: the best sales pitch you will ever make is letting someone use your product for free. Not a watered-down demo, not a 14-day trial that expires before anyone has figured out the […]
Read more →Mac Terminal: Check DNS Nameservers in 2 Commands
To view the list of nameservers your mac is using, simply open Terminal and paste the following: Alternatively, you can copy the DNS servers to clipboard directly from the command line (using pbcopy):
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Has Microsoft’s Moat Been Breached? What Is Left of the Enterprise Fortress?
1. Microsoft the company is doing perfectly well, and that is not the question I am asking Let me kill the easiest objection to this article before anyone reaches for it, because the objection is entirely reasonable and entirely beside the point. Microsoft 365 Commercial cloud revenue grew 14% in Microsoft’s latest reported quarter, paid […]
Read more →Windows 10: Fix Flashing Desktop Icons in 3 Steps
Just popping this here as I have had this a few times. Have you ever had your desktop icons flash and if you check explorer.exe its using high CPU. If so try: Step 1. Delete the Icon Cache Save the following as a batch file on your desktop and run it as admin: Step 2. […]
Read more →Monitor LDAP Queries on Domain Controller: PowerShell Guide
The script below monitors LDAP operations on a Domain Controller and logs detailed information about queries that exceed specified thresholds for execution time, CPU usage, or results returned. It helps identify problematic LDAP queries that may be impacting domain controller performance. Parameter: ThresholdSeconds Minimum query duration in seconds to log (default: 5) Parameter: LogPath Path […]
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macOS: Find Which Process Is Using a Specific Port
Below is a useful script when you want to see which processes are using a specific port.
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Find MTU Between Two Hosts Using Ping Do-Not-Fragment
If you have ever tried to use jumbo packets, or trace a weird slowness on the network – one of the things that frequently comes up is packet fragmentation. This is basically where a source machine is sending bigger packets than can be consumed along its pathway to a destination machine. This means the packets […]
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pi2s3: An AMI for Your Raspberry Pi
If you have ever had a Raspberry Pi die on you, you know exactly what the recovery process looks like. You flash a new SD card or NVMe, reinstall your packages, rebuild your Docker stacks, reconnect your Cloudflare tunnel, reconfigure nginx, re-enter your credentials, clone your repos, tweak your cron jobs, and spend the better […]
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macOS TCP Ping: Replace Ping on ZTNA Networks (No ICMP)
A lot of companies are moving to ZTNA (Zero Trust Network Architecture). This is generally a good thing, it helps cyber posture and it and makes life a lot easier as you no longer need to login to VPN tunnels to manage your cloud environment/s. But one of the few downsides of ZTNA is that […]
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