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Blog Piotra Ślatały | Peter Slatala's Blog

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OpenVPN – Slow Speed

When I do iperf from my client to server over VPN (OpenVPN uses UDP, iperf uses UDP or TCP), speed is slow (6mbps). When I do it over TCP without VPN, speed is fast (300mbps). CPU is ok. This post summarizes debugging. Notable settings in my OpenVPN server Fast-io On both client and server didn t...

Accessing linux partitions (including BTRFS) from WSL2

(as documented) Insert your USB stick, hard drive, sd card, what have you, then run You will get result like Then, mount to WSL:

Raspberry Pi Photo Frame – 2025 Edition – LABWC

This article looked promising, but 1) compiling picframe took forever, 2) and it failed. Also, I was looking for something less pythony and more I want a lightweight, wayland, window manager and go from there Out of scope: Requirements Non goals: transition between images. Summary I will use labwc and systemd directly. feh will be...

Inea – the bad provider. Mitigating packet loss & congestion

Ok, so INEA.pl is on the list of one of the worst providers ever. They provide you with a cable modem cable connection with something like 10%-20% packet loss (when you are lucky. FOR REAL.). I occasionally backup my computer (200mbps upload), to my computer on INEA network (30mbps advertised download). Unfortunately, the speeds...

Simple NVR setup for Amcrest & Reolink cameras

A while ago I purchased amcrest (this and this branded Dahua) and reolink (RLC-410) cameras. I run my own server at home, with enough storage to actually have recording stored there. I did not want another box (NVR) to store the recording, the server I have is more than enough. Continuous (loop) recording Set up...

About SPF, DMARC, and the state of the email. Case: DJI Support

So this is a random grumble about hosting your own email. I ve been doing it for over ten years. I own a server with a static IP, for which the ISP has refused to fix the reverse DNS lookup, but that s another story (it points to a non-existing domain). Anyway, for the last 3 weeks...

OpenVPN with easyvpn Debian 10 Buster

Create CA and certificates Fill in the CA part (Common Name). Next, generate server certificate. nopass option disables password. Next, generate client certificate. Certificates are valid 3 years by default. To remove passphrase (if you forgot nopass): Generate Diffie-Hellman parameters Generate TA key to prevent DoS attacks and UDP port flooding Server configuration Firewall configuration...

Hyper-V Create Virtual Machine — reclaim disk space

Create Virtual Machine wizard in Hyper-V downloads an image (ubuntu / windows 10) and stores it somewhere (!). When the virtual machine is created, it s placed correctly in the virtual machine location, as indicated in settings: But the images that it used to install them are stored on C:\ The disk cleanup utility does not...

Cisco 7962G – The Best SIP phone?

I ve been on a lookout for a dream sip phone for a while. A dream to me is: cheap and reliable, and with some decent customizations. When I came across a Cisco 7962G for $9.37 shipped (+tax) on Amazon, I knew it had to be mine. My only regret is That I purchased just one....

The road to 2.5gbe.

So I had a great idea. Buy two 2.5gbe ethernet adapters (like these) and connect them to get faster link to my NAS. Imagine my surprise when my Debian 10 Buster did not detect the network card (it works fine in Windows). Frustrated, I bought a 10gbe adapter (Intel X540-T1). Another suprise. It only speaks...