Create an SSH User with a non-interactive Shell

Create the Restricted System User

sudo useradd -r -s /bin/false -m -d /home/proxyuser proxyuser

Set Up Authentication

sudo passwd proxyuser

Configure SSH Daemon

sudo nano /etc/ssh/sshd_config
Match User proxyuser
    AllowAgentForwarding no
    AllowTcpForwarding yes
    X11Forwarding no
    PermitTTY no
    ForceCommand /bin/false

Restart the SSH Service

sudo systemctl restart ssh
# or
sudo systemctl restart sshd

 

Force Administrator Global Elevation via Registry in Windows

If you want every single .exe you launch to attempt to run with your full Admin token by default, you can tweak the registry.

Press Win + R, type regedit, and hit Enter.

Navigate to:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System

Look for the value EnableLUA.

Double-click it and change the Value Data to 0.

Restart your computer.

Install Rust GNU toolchain on Windows

Install MSYS2

  • Download & Install: Download the installer from the official MSYS2 website and run it. Using the default installation path (e.g., C:\msys64) is highly recommended

pacman -Syu
pacman -S --needed base-devel mingw-w64-x86_64-toolchain

Set Up and Configure Rust

rustup target add x86_64-pc-windows-gnu
rustup toolchain install stable-x86_64-pc-windows-gnu
rustup set default-host x86_64-pc-windows-gnu

Create (or edit) a file at %USERPROFILE%\.cargo\config.toml. Add these lines to explicitly tell Cargo which linker and archiver to use; replace C:\msys64 with your actual MSYS2 path if different

[target.x86_64-pc-windows-gnu]
linker = "C:\\msys64\\mingw64\\bin\\gcc.exe"
ar = "C:\\msys64\\mingw64\\bin\\ar.exe"

 

Blank Screen on Ubuntu Server

Blank screen after idle: setterm --blank 1 (the number is the timeout in minutes)

Blank screen immediately: setterm --blank force

To turn the screen back on, run setterm --blank poke

Permanent Solution (Automatic on Boot)

sudo nano /etc/systemd/system/setterm-blank.service
[Unit]
Description=Blank screen after 1 minute idle
After=multi-user.target

[Service]
Type=oneshot
Environment="TERM=linux"
ExecStart=/usr/bin/setterm --blank 1 --term linux
StandardOutput=tty
TTYPath=/dev/tty0

[Install]
WantedBy=multi-user.target
sudo systemctl enable setterm-blank.service
sudo systemctl start setterm-blank.service

Or

sudo nano /etc/default/grub

Find the line GRUB_CMDLINE_LINUX_DEFAULT and add consoleblank=60 (60 = seconds before blanking):

GRUB_CMDLINE_LINUX_DEFAULT="quiet consoleblank=60"
sudo update-grub
sudo reboot

 

Install Chocolatey on Windows

Set-ExecutionPolicy Bypass
Set-ExecutionPolicy Bypass -Scope Process -Force; [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072; iex ((New-Object System.Net.WebClient).DownloadString('https://community.chocolatey.org/install.ps1'))

 

Capture All Traffic to and from a Specific IP Address in Wireshark

ip.addr == 104.19.230.21
  • ip.addr matches packets where the source OR destination IP is 104.19.230.21.

  • It works for both IPv4 and IPv6 (though here it’s IPv4).

You could also use:

ip.src == 104.19.230.21 or ip.dst == 104.19.230.21
  • If you want to see only traffic from that IP (responses to you), use ip.src == 104.19.230.21.

  • If you want only traffic to that IP (your requests), use ip.dst == 104.19.230.21.

Single WordPress Instance with Multiple Domains

Add the following code to your wp-config.php file, right before the line that says /* That's all, stop editing! Happy publishing. */

$domain = array("domain1.com", "www.domain1.com", "domain2.com", "www.domain2.com");
if (in_array($_SERVER['HTTP_HOST'], $domain)) {
    define('WP_SITEURL', 'http://' . $_SERVER['HTTP_HOST']);
    define('WP_HOME', 'http://' . $_SERVER['HTTP_HOST']);
}

This code dynamically sets the site URL based on how a visitor accesses the site, ensuring both domains work correctly.

Important Considerations:

  • Allow All Domains: If you want to allow any domain pointing to your server, replace the if (in_array(...)) block with just the two define lines, though using the domain array is safer to prevent unwanted access.

  • HTTPS Support: If your site uses HTTPS, change 'http://' to 'https://' in both define statements.

  • Subdirectory Installations: If WordPress is in a subdirectory (e.g., /wp), modify the code accordingly: define('WP_SITEURL', 'http://' . $_SERVER['HTTP_HOST'] . '/wp');.

  • Avoid Plugin Conflicts: When testing, temporarily deactivate plugins to check for conflicts.