telemt/docs/QUICK_START_GUIDE.en.md

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# Telemt via Systemd
## Installation
This software is designed for Debian-based OS: in addition to Debian, these are Ubuntu, Mint, Kali, MX and many other Linux
**1. Download**
```bash
wget -qO- "https://github.com/telemt/telemt/releases/latest/download/telemt-$(uname -m)-linux-$(ldd --version 2>&1 | grep -iq musl && echo musl || echo gnu).tar.gz" | tar -xz
```
**2. Move to the Bin folder**
```bash
mv telemt /bin
```
**3. Make the file executable**
```bash
chmod +x /bin/telemt
```
## How to use?
**This guide "assumes" that you:**
- logged in as root or executed `su -` / `sudo su`
- Already have the "telemt" executable file in the /bin folder. Read the **[Installation](#Installation)** section.
---
**0. Check port and generate secrets**
The port you have selected for use should not be in the list:
```bash
netstat -lnp
```
Generate 16 bytes/32 characters in HEX format with OpenSSL or another way:
```bash
openssl rand -hex 16
```
OR
```bash
xxd -l 16 -p /dev/urandom
```
OR
```bash
python3 -c 'import os; print(os.urandom(16).hex())'
```
Save the obtained result somewhere. You will need it later!
---
**1. Place your config to /etc/telemt/telemt.toml**
Create the config directory:
```bash
mkdir /etc/telemt
```
Open nano
```bash
nano /etc/telemt/telemt.toml
```
Insert your configuration:
```toml
# === General Settings ===
[general]
# ad_tag = "00000000000000000000000000000000"
use_middle_proxy = false
[general.modes]
classic = false
secure = false
tls = true
[server]
port = 443
[server.api]
enabled = true
# listen = "127.0.0.1:9091"
# whitelist = ["127.0.0.1/32"]
# read_only = true
# === Anti-Censorship & Masking ===
[censorship]
tls_domain = "petrovich.ru"
[access.users]
# format: "username" = "32_hex_chars_secret"
hello = "00000000000000000000000000000000"
```
then Ctrl+S -> Ctrl+X to save
> [!WARNING]
> Replace the value of the hello parameter with the value you obtained in step 0.
> Additionally, change the value of the tls_domain parameter to a different website.
> Changing the tls_domain parameter will break all links that use the old domain!
---
**2. Create telemt user**
```bash
useradd -d /opt/telemt -m -r -U telemt
chown -R telemt:telemt /etc/telemt
```
**3. Create service in /etc/systemd/system/telemt.service**
Open nano
```bash
nano /etc/systemd/system/telemt.service
```
Insert this Systemd module:
```bash
[Unit]
Description=Telemt
After=network-online.target
Wants=network-online.target
[Service]
Type=simple
User=telemt
Group=telemt
WorkingDirectory=/opt/telemt
ExecStart=/bin/telemt /etc/telemt/telemt.toml
Restart=on-failure
LimitNOFILE=65536
AmbientCapabilities=CAP_NET_BIND_SERVICE
CapabilityBoundingSet=CAP_NET_BIND_SERVICE
NoNewPrivileges=true
[Install]
WantedBy=multi-user.target
```
then Ctrl+S -> Ctrl+X to save
reload systemd units
```bash
systemctl daemon-reload
```
**4.** To start it, enter the command `systemctl start telemt`
**5.** To get status information, enter `systemctl status telemt`
**6.** For automatic startup at system boot, enter `systemctl enable telemt`
**7.** To get the link(s), enter:
```bash
curl -s http://127.0.0.1:9091/v1/users | jq
```
> Any number of people can use one link.
> [!WARNING]
> Only the command from step 7 can provide a working link. Do not try to create it yourself or copy it from anywhere if you are not sure what you are doing!
---
# Telemt via Docker Compose
**1. Edit `config.toml` in repo root (at least: port, users secrets, tls_domain)**
**2. Start container:**
```bash
docker compose up -d --build
```
**3. Check logs:**
```bash
docker compose logs -f telemt
```
**4. Stop:**
```bash
docker compose down
```
> [!NOTE]
> - `docker-compose.yml` maps `./config.toml` to `/app/config.toml` (read-only)
> - By default it publishes `443:443` and runs with dropped capabilities (only `NET_BIND_SERVICE` is added)
> - If you really need host networking (usually only for some IPv6 setups) uncomment `network_mode: host`
**Run without Compose**
```bash
docker build -t telemt:local .
docker run --name telemt --restart unless-stopped \
-p 443:443 \
-p 9090:9090 \
-p 9091:9091 \
-e RUST_LOG=info \
-v "$PWD/config.toml:/app/config.toml:ro" \
--read-only \
--cap-drop ALL --cap-add NET_BIND_SERVICE \
--ulimit nofile=65536:65536 \
telemt:local
```