Post tagged: network

Raspberry Pi emulation with Qemu

The idea here is that we use a Desktop PC for developing/debugging Raspberry Pi set-ups using qemu for emulating Rasperrby Pi.

qemu currently supports the following configurations:

  • Raspberry Pi Zero and 1A+ (armhf)
  • Raspberry Pi 2B (armv7)
  • Raspberry Pi 3A+ (aarch64)
  • Raspberry Pi 3B (aarch64)
    • This is the version …

voidlinux virtualization

This recipe is for setting virtualization on a voidlinux desktop.

Use this setup script to set things up on void linux.

Connecting to libvirtd

Note that virsh and virt-manager commands connect to different libvirtd sessions by defauult.

virsh defaults to qemu:///session while virt-manager to qemu:///system.

It is better …

Ad-Hoc rsync daemons

The other day I needed to copy a bunch of files between to servers in my home network. Because of the volume I wanted to copy the files without having to go through ssh's encryption overhead. So I figured I could use netcat for the data transport.

To do …

Z-Wave Associations with With Vera UI

I couldn't find any to the point documentation on how to do this, so I am writing this.

The way I understand Z-Wave associations work is that once devices are in the same Z-Wave network, a device can directly send a command to another device without intervention of the Hub …

Installing Void Linux

I made the switch to void linux. Except for compatibility issues around glibc, it works quite well. Most compatibility I have worked around with a combination of Flatpaks, chroots and namespaces.

The high lights of void linux:

  • musl build - which is very lightweigth
  • Does not depend on systemd …

Windows Account Lockouts

To prevent windows lockouts the following can be done:

  • Delete Internet Explorer browsing history
  • Run the following:
    • Open Start --> Search filed--> Type in Run --> rundll32.exe keymgr.dll, KRShowKeyMgr --> Delete
  • Disconnect network shares
  • Change password

using cachefiles on an Linux NFS share

If you often mount and access a remote NFS share on your system, you will probably want to know how to improve NFS file access performance. One possibility is using file caching. In Linux, there is a caching filesystem called FS-Cache which enables file caching for network file systems such …

CyberWorld 2017.1

Development - travis cordova build - travis ionic build

  • owx
    • common
      • muninlite (can it support plugins?)
      • flock, pwgen, ifstat
    • ow1
      • diags&tools: usbutils, netstat-nat
      • sniffer: tcpdump[-mini] 317K/617K, libpcap 191K
    • owX
      • FW/NAT
      • DNSMASQ: DHCP + DNS
      • NTP server
      • Dynamic DNS updating (mushu porker)
      • NFS
      • IPv6 tunnel
      • Provisioning server: (PXE, TFTP, NFS …

Windows administration from the command line

Windows system administration is very mouse driven and to reach all tools you need to browse through Windows explorer.

If you are like me and prefer to log on a limited privilege account and use Runas to perform admin tasks, you can open these consoles with the .msc file names …

Using a NAS200 as a Print server

Last weekend I had a small weekend project to move my All-In-One Printer/Scanner from my Xen host server to a spare NAS200 I had lying around. Since the NAS200 has a i486 compatible CPU, and I had been able to run a CentOS 5 distro before, I figure it …

Enable local file caching for NFS share on Linux

In Linux, there is a caching filesystem called FS-Cache which enables file caching for network file systems such as NFS. FS-Cache is built into the Linux kernel 2.6.30 and higher. In order for FS-Cache to operate, it needs cache back-end which provides actual storage for caching. One such …

Yealink W52P

Yealink W52P

phone

So I was looking to replace my analog cordless phones mainly because I wanted to have a centralized way to maintain phonebooks. Right now I have two cordless phone that I have to manually enter phonebook entries on the two handsets independently.

Initially I was thinking of getting …

Askozia Desktop Appliance

Askozia Logo

So last weekend finally had some time to work with a Askozia Desktop Appliance.

It actually arrived much earlier but without a Power Supply. Initially I though, "this is strange; I didn't know this supported PoE". (Power Over Ethernet). It turns out it didn't and there was a shipping mistake …