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Change Ubuntu LVM encryption passphrase

Find out the UUID of the encrypted partitioncat /etc/crypttabIt will show something like this: nvme0n1p3_crypt UUID=49c18a64-fc5d-4d90-b770-bfeda8531f7f none luks,discardFind the ID of the drivesudo blkid | grep 49c18a64It will show something like this: /dev/nvme0n1p3: UUID="49c18a64-fc5d-4d90-b770-bfeda8531f7f" TYPE="crypto_LUKS" PARTUUID="f47c4836-ba21-498c-a571-daea2ab0a52f"

security

Setup Wireguard VPN server with Docker

Get and setup a serverBoth Vultr and DigitalOcean offers as inexpensive as $5 per month servers. So please choose by datacenter location. Largest Cloud Server Network AvailableVultr offers the largest worldwide network, enabling you to spin up and easily scale a low latency infrastructure

security

Use OpenVPN over Shadowsocks

Before we startSetup OpenVPN server https://www.digitalocean.com/community/tutorials/how-to-set-up-and-configure-an-openvpn-server-on-ubuntu-20-04Setup Shadowsocks server https://thematrix.dev/setup-go-shadowsocks-on-ubuntu/Configure client sideOpen the client .ovpn file. Add this line to use SOCKS5 proxy on localhost port 1080. socks-proxy 127.0.0.1 1080Add this line

security

Setup Go-Shadowsocks on Ubuntu 20.04

Before we startGet a server https://thematrix.dev/get-a-domain-name-a-server-and-protect-them-with-cloudflare/Install Docker https://thematrix.dev/install-docker-and-docker-compose-on-ubuntu-20-04/Go-Shadowsocks-2We are goinbg to setup Go-Shadowsocks-2. It is 2nd version Shadowsocks written in Go-Lang. shadowsocks/go-shadowsocks2Modern Shadowsocks in Go. Contribute to shadowsocks/go-shadowsocks2 development by creating an account on

security

Setup Cloudflare CDN protected Trojan-Go with Docker on Ubuntu 20.04

Before we startGet a server https://thematrix.dev/get-a-domain-name-a-server-and-protect-them-with-cloudflare/Install Docker https://thematrix.dev/install-docker-and-docker-compose-on-ubuntu-20-04/Get your Cloudflare account and domain-name https://thematrix.dev/get-a-domain-name-a-server-and-protect-them-with-cloudflare/Setup Trojan-Go serverCreate Docker-Compose configuration fileCreate docker-compose.yml which contains the official Trojan-Go image, and a NGINX web server.

cloudflare

Get a domain name, a server, and protect them with Cloudflare.

Get a domain nameIn this tutorial, NameCheap will be used for demonstration. I have been their customer since 2004. Like their name, they sell domain-name cheap. With every domain-name they sell, it comes with WHOIS-Guard. So the general public cannot find out your personal

Use LDAC on Ubuntu 20.04

sudo add-apt-repository ppa:berglh/pulseaudio-a2dpsudo apt install libldac pulseaudio-modules-bt libavcodec-extra58 libfdk-aac1 bluez pulseaudio bluemanpulseaudio -k pulseaudio --start

Creating server on Vultr

Create an account if you do not have one yet. Click on the + button and select Depoly new server to create a new server instance. Select server type. For general

docker

Install Docker and Docker-Compose on Ubuntu 20.04

DockerInstall necessary tools: sudo apt install apt-transport-https ca-certificates curl software-properties-common -yAdd Docker key: curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -Add Docker repo (choose the correct repository): 32bit / 64bit OS sudo add-apt-repository \ "deb [arch=amd64] https://download.docker.com/

vpn

Setting up Wireguard with Stubby on Ubuntu 20.04

Setup WireguardInstall Wireguard and necessary tools. Since Linux version 5, Wireguard is built in. So Wireguard is available in Ubuntu 20.04 repo. sudo apt update && sudo apt upgrade -y && sudo apt install net-tools wireguard qrencode -y Generate Wireguard "server"

vpn

Setup VPN on Ubuntu on DigitalOcean / Vultr

OpenVPN vs WireGuard: https://restoreprivacy.com/wireguard/ Choose a service provider which suits you most. Choose a nearest location to get fastest speed. Choose a location where the country is liberal. Choose a location which provides best price. Tutorial on setting up server on

Connecting to remote host via SSH using Putty on Windows

Download and install Putty https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html Direct link 64-bit 32-bitRun PuttyEnter the IP address of the remote host in "Host Name (or IP address)" field. Default port is 22, if you have not changed it during

Generating SSH key on Windows

Download and install Putty https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html Direct link 64-bit 32-bitRun Putty key generatorThe larger "Number of bits in a generated key", the more different to be cracked. Please use at least 2048. 4096 is recommended.Click

Server setup on DigitalOcean

Register on DigitalOcean Register using the link below, you will get $50 credit for try out their service: https://m.do.co/c/a55a436b505dCreate a new project first.Click "Create" on the top-right hand corner, and choose "Droplet" (server).Below is the list of

Server setup on Vultr

Register on Vultr. Register using the link below, you will get $50 credit for try out their service: https://www.vultr.com/?ref=8004608-4FYou may get some free credit by following their requirements: https://my.vultr.com/promo/Click the + sign on the top-right

Raspberry-Pi set-up

First of all, please get a Raspberry-Pi (PI below) https://www.raspberrypi.org/products/Please prepare a micro-SD card and a good quality power adapter and USB cable. Failing to provide sufficient power may cause the system unstable.Download the OS which suits your

Install zipped add-on on KODI (former XBMC)

Download the add-on fileNetflix https://github.com/asciidisco/plugin.video.netflixFree television channel of Hong Kong https://gitea.y2kbug.xyz/y2kbug/plugin.video.tvhkIf it is on Github, find the green button and choose "Downoad ZIP". Or, on Gitea, choose "ZIP". Turn on "Unknown

Telegram的安全指定

使用太空卡開設帳號交換聯絡時，使用帳戶名稱，而非電話號碼喺"Privacy and Security"入面，有好多設置選項為免被撞出電話號碼，請設成 "My Contacts" 或 "Nobody""Last Seen & Online" 請設成 "My Contacts" 或 "Nobody".如果唔想全世界知你個樣，"Profile Photo" 請設成 "My Contacts"唔想俾人轉寄嘅訊息連結返自己度，"Forwarded Messages" 請設成 "Nobody"你附近嘅人可以根據響聲搵你所在位置，建議設成 "My Contacts" 或 "Nobody"將 "Delete my account if

Safeguard your identity when using Telegram

Create Telegram account with a phone number without associating with your identity.Add a "username". Share "username" instead of "phone number" to others.There are a lot of options inside the "Privacy and Security" page.Never let other search you by phone number. A

docker

Enable IPv6 on Docker on DigitalOcean

Enable IPv6 on the DropletNote the IPv6 detail (the data below is for demo only)PUBLIC IPV6 ADDRESS: aaaa:bbbb:cccc:dddd:eeee:ffff:1001 PUBLIC IPV6 GATEWAY: aaaa:bbbb:cccc:dddd:eeee:ffff:1 CONFIGURABLE ADDRESS RANGE: aaaa:bbbb:cccc:dddd:eeee:ffff:

Multi-boot Windows 10, Ubuntu 18.04 and Android on Surface Pro 6

Windows 10 is shipped with Surface Pro 6. I don't use it normally. I just plan to restore everything to factory setting when I sell the Surface in the future. Install Ubuntu following this guide. This guide applies on Android x86, and also Bliss

Dual boot Windows 10 and Ubuntu 18.04 with Ubuntu encrypted

Run GParted Resize for some free spaceCreate an ext4 400MB /boot on the free space (It will become /dev/nvme0n1p5 in my case)Create an ext4 partition on the remaining space (It will become /dev/nvme0n1p6 in my case)Run Terminal sudo cryptsetup luksFormat

Use Linux on Chrome OS with crouton

Navigate to crouton project page https://github.com/dnschneid/crouton Click the link to download croutonRun crouton and it will install automatically. The command below: -e means enable encryption -t means the extensions to be installed -r the Linux distribution going to install (xenial

Build FFMpeg on Ubuntu 18.04

Get the Dependenciessudo apt update -qq && sudo apt -y install \ autoconf \ automake \ build-essential \ cmake \ git-core \ libass-dev \ libfreetype6-dev \ libsdl2-dev \ libtool \ libva-dev \ libvdpau-dev \ libvorbis-dev \ libxcb1-dev \ libxcb-shm0-dev \ libxcb-xfixes0-dev \ pkg-config \ texinfo \ wget \ zlib1g-dev \ openssl \ libssl-devIn your home directory make a new directory to put all of

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