TNT/README.md
m1ngsama 5f8b8fd843 feat: enhance anonymous access and long-term stability
Improvements for low-barrier anonymous access:
- Enhanced welcome message to clarify anonymous access
- Added EASY_SETUP.md guide in Chinese and English
- Updated README with anonymous access notes

Long-term stability enhancements:
- Improved systemd service with auto-restart and resource limits
- Added log rotation script (scripts/logrotate.sh)
- Added health check script (scripts/healthcheck.sh)
- Added cron setup script for automated maintenance
- Added anonymous access test suite

Testing:
- All security features verified (10/10 passed)
- Anonymous access tests passed (2/2)
- Health check verified

This ensures:
- Zero-barrier SSH access (any username, any password)
- Stable long-term operation with auto-restart
- Automated log management
- Continuous health monitoring
2026-01-22 15:06:54 +08:00

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Markdown

# TNT
Terminal chat server. Vim-style interface. SSH-based.
## Install
```sh
curl -sSL https://raw.githubusercontent.com/m1ngsama/TNT/main/install.sh | sh
```
Or download from [releases](https://github.com/m1ngsama/TNT/releases).
## Run
```sh
tnt # port 2222
tnt -p 3333 # custom port
PORT=3333 tnt # env var
```
Connect: `ssh -p 2222 localhost`
**Anonymous Access**: By default, users can connect with ANY username and ANY password (or empty password). No SSH keys required. This makes TNT perfect for public chat servers.
## Security
Configure via environment variables.
### Access Control
```sh
TNT_ACCESS_TOKEN="secret" tnt # require password
TNT_BIND_ADDR=127.0.0.1 tnt # localhost only
```
Without `TNT_ACCESS_TOKEN`, server is open (default).
### Rate Limiting
```sh
TNT_MAX_CONNECTIONS=100 tnt # total limit
TNT_MAX_CONN_PER_IP=10 tnt # per-IP limit
TNT_RATE_LIMIT=0 tnt # disable (testing only)
```
Default: 64 total, 5 per IP, rate limiting enabled.
### SSH Options
```sh
TNT_SSH_LOG_LEVEL=3 tnt # verbose logging (0-4)
```
## Keys
**INSERT** (default)
- `ESC` → NORMAL
- `Enter` → send
- `Backspace` → delete
**NORMAL**
- `i` → INSERT
- `:` → COMMAND
- `j/k` → scroll
- `g/G` → top/bottom
- `?` → help
**COMMAND**
- `:list` → users
- `:help` → commands
- `ESC` → back
## Build
```sh
make # normal
make debug # with symbols
make asan # sanitizer
make check # static analysis
```
Requires: `libssh`
## Deploy
See [DEPLOYMENT.md](DEPLOYMENT.md) for systemd setup.
## Files
```
messages.log chat history
host_key SSH key (auto-gen)
tnt.service systemd unit
```
## Test
```sh
./test_basic.sh # functional
./test_stress.sh 50 # 50 clients
```
## Docs
- `README` - man page style
- `EASY_SETUP.md` - 🚀 **快速部署指南 / Quick Setup Guide**
- `HACKING` - dev guide
- `DEPLOYMENT.md` - production
- `CICD.md` - automation
- `QUICKREF` - cheat sheet
## License
MIT