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STP
In this post, we will have a look at the venerable Spanning Tree Protocol (STP), what it is used for, and how to configure and verify it on Cisco IOS and MikroTik.
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Check OCSP With OpenSSL CLI Tool
How to query an OCSP responder to check the validity of a certificate?
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Open a ZIP File With Any Extension In Vim
What to do when you use Vim to open a zip file, but the file extension is not
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Build Kotlin JMH Benchmarks With Maven
In this post, we will look at how to set up the Maven infrastructure so we can benchmark Kotlin code with JMH (the Java Microbenchmarking Harness).
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Migrate Nextcloud PostgreSQL 11 to 17 in a Docker Container
This post looks at how to migrate a Postgres Docker image to a newer version. I will dump all databases contained in a container and migrate them all into a new container. The process outlined works for any Postgres container, but I discuss it in the context of my Nextcloud setup.
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How to Create a Shared Git Repo
In this post we will take a look at how to set up a shared Git repository. The goal is to have multiple different users be able to push to and pull from this repository. Security is provided by using Unix users and groups.
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Docker Volume Permissions: Mismatch Between Host UID and Container UID
When you have a Docker container with a user that has a different UID from the one on your host, mounting a volume and accessing the files can result in permission issues.
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Postgres Data Types, Sizes and Alignment
How much storage does a single row in a Postgres table take?
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Remove All CAs From Linux Trust Store
On Security Now! podcast #951, Steve told us that 7 organizations in the PKI are responsible for minting upwards of 99% of all existing certificates. (Possible original source.)
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Cookies
Under what circumstances cookies are accepted or rejected by user agents and send back to web servers can be a bit confusing. Let’s experiment a bit.
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