V0XNIHILI

wuhanstudio

# Install QEMU-6.1.0
wget https://download.qemu.org/qemu-6.1.0.tar.xz
tar xvJf qemu-6.1.0.tar.xz
cd qemu-6.1.0
./configure
make
sudo make install

# Download Armbian (Ubuntu Focal 20.04) for OrangePi PC
wget https://mirrors.netix.net/armbian/dl/orangepipc/archive/Armbian_21.08.1_Orangepipc_focal_current_5.10.60.img.xz

visualblind

kern.maxproc: Maximum number of processes
kern.ngroups: Maximum number of supplemental groups a user can belong to
kern.ipc.shm_allow_removed: Enable/Disable attachment to attached segments marked for removal
kern.ipc.shm_use_phys: Enable/Disable locking of shared memory pages in core
kern.ipc.shmall: Maximum number of pages available for shared memory
kern.ipc.shmseg: Number of segments per process
kern.ipc.shmmni: Number of shared memory identifiers
kern.ipc.shmmin: Minimum shared memory segment size
kern.ipc.shmmax: Maximum shared memory segment size
kern.ipc.semaem: Adjust on exit max value

tims457

AfroThundr3007730

#!/bin/bash
# These steps will allow the setup of an on-demand SSH proxy
# Three unit files will be created to serve this purpose:
#   ssh-socks-helper.socket - The listening socket providing activation
#   ssh-socks-helper.service - A systemd proxy to pass the socket fd
#   ssh-socks.service - The actual SSH service providing the tunnel

cat <<'EOF' > ~/.config/systemd/user/ssh-socks-helper.socket
[Unit]
Description=Proxy Helper Socket for Bastion SOCKS5 Proxy

mizhka

kern.maxproc: Maximum number of processes
kern.ngroups: Maximum number of supplemental groups a user can belong to
kern.ipc.shm_allow_removed: Enable/Disable attachment to attached segments marked for removal
kern.ipc.shm_use_phys: Enable/Disable locking of shared memory pages in core
kern.ipc.shmall: Maximum number of pages available for shared memory
kern.ipc.shmseg: Number of segments per process
kern.ipc.shmmni: Number of shared memory identifiers
kern.ipc.shmmin: Minimum shared memory segment size
kern.ipc.shmmax: Maximum shared memory segment size
kern.ipc.semaem: Adjust on exit max value

kbingham

#!/bin/sh

set -e
#set -x

CONFIGFS="/sys/kernel/config"
GADGET="$CONFIGFS/usb_gadget"
VID="0x0525"
PID="0xa4a2"
SERIAL="0123456789"

lightrush

X11vnc Systemd Unit File

This Systemd unit file starts X11VNC on boot

1. Set VNC password: sudo x11vnc -storepasswd [YOUR VNC PASSWORD] /etc/x11vnc.passwd
2. Install Systemd Unit File

sudo cp [path to]/vnc.service /etc/systemd/system/
sudo systemctl daemon-reload
sudo systemctl enable vnc.service

eruffaldi

# Only for remote UDP https://stackpointer.io/network/ssh-port-forwarding-tcp-udp/365/

# Local UDP server to Remote UDP server
ssh -L 9999:127.0.0.1:9999 percro@alientelecom socat tcp4-listen:9999,reuseaddr,fork udp:target:9999
socat -T15 udp4-recvfrom:9999,reuseaddr,fork tcp:localhost:9999

# Remote UDP server to Local UDP server
ssh -R 9999:127.0.0.1:9999 percro@alientelecom socat udp4-recvfrom:9999,reuseaddr,fork tcp:localhost:9999
socat -T15 tcp4-listen:9999,reuseaddr,fork udp:localhost:9999

AfroThundr3007730

This gist includes a certificate renewal script, which I use to renew both of my LetsEncrypt certificates, as well as the systemd unit files necessary to automate it. It's currently set to run every 12 hours, and renews the certificates if they expire in less than 3 days. The certbot tool is required in order to use this script. Note that I generated my keys and CSR manually because I needed to add specific extensions to my certificates. That process is not covered here.

Filename	Description
01-getcert.sh	The certificate renewal script.
02-cli.ini	Example Certbot configuration.
03-getcert.timer	The systemd timer unit file.
04-getcert.service	The systemd service unit file.
05-openssl.conf	Example openssl.conf for the CSR
06-getcert-ddns.sh	DDNS version of the renewal script.