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TNT's Not Tunnel

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README.md

TNT

Terminal chat server. Vim-style interface. SSH-based.

Install

curl -sSL https://raw.githubusercontent.com/m1ngsama/TNT/main/install.sh | sh

Or download from releases.

Run

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

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

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

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

make              # normal
make debug        # with symbols
make asan         # sanitizer
make check        # static analysis

Requires: libssh

Deploy

See DEPLOYMENT.md for systemd setup.

Files

messages.log      chat history
host_key          SSH key (auto-gen)
tnt.service       systemd unit

Test

make test               # run comprehensive test suite
# Individual tests are in tests/ directory

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