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docs(setup): make fail2ban opt-in in 70-hardening.sh
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Three branches now: (1) already running -> skip; (2) installed but
stopped -> prompt to enable+start; (3) not installed -> prompt to
install+enable+start. Each decline path logs `(user choice)` so a
re-run doesn't surprise the dev with a different state.

Reasoning: some corp environments already ship brute-force protection
at the network layer (ACL / corp firewall / appliance). fail2ban on
the host is then redundant and can be the wrong layer to debug from
when a rule misfires. The other three hardening steps (UFW,
sshd lockdown) were already prompt-gated; fail2ban was the odd one out.

Table descriptors in the main doc + setup README updated to make
each sub-step's prompt posture visible.
This commit is contained in:
Julien Gautier
2026-05-24 19:59:50 +02:00
parent c77313c693
commit 1d8de3365f
3 changed files with 31 additions and 15 deletions
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docs/setup/01-dev-debian-vm-setup.md
+10 -10
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@@ -160,16 +160,16 @@ The `bootstrap.sh` script runs every numbered script (`10-…` → `80-…`) in
What each script does:
| Script | Effect | Idempotent? |
| ---------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------- |
| [`10-base-packages.sh`](scripts/10-base-packages.sh) | `apt update` + install base packages (curl wget git build-essential ca-certificates gnupg software-properties-common) | ✅ |
| [`20-zsh.sh`](scripts/20-zsh.sh) | Install zsh + Oh My Zsh + Powerlevel10k + plugins (autosuggestions, syntax-highlighting). Patch `~/.zshrc` (theme + plugins + fzf hook) and `~/.bashrc` (exec zsh on interactive shells — `chsh` is blocked on the corp VM). | ✅ |
| [`30-cli-tools.sh`](scripts/30-cli-tools.sh) | Install `bat eza fd-find ripgrep fzf zoxide ncdu keychain` + `jq yq httpie make tree htop tmux direnv dnsutils unzip`. Aliases for the Debian-renamed binaries (`batcat`→`bat`, `fdfind`→`fd`). | ✅ |
| [`40-node.sh`](scripts/40-node.sh) | Install nvm. Install Node from the repo's `.nvmrc` (currently `24`). Enable corepack, pin pnpm to `package.json`'s `packageManager`. | ✅ |
| [`50-docker.sh`](scripts/50-docker.sh) | Install Docker CE + compose plugin from the Docker apt repo. Add the current user to the `docker` group. Enable `docker.service`. | ✅ |
| [`60-tuning.sh`](scripts/60-tuning.sh) | `fs.inotify.max_user_watches=524288` (Vite / Nx watch). Prompt for hostname (only if generic). Add a 4 GB swapfile if none. | ✅ |
| [`70-hardening.sh`](scripts/70-hardening.sh) | Best-effort UFW (allow SSH only by default), `unattended-upgrades` on security channel, `fail2ban`, sshd hardening (no root, no password). **Probes before applying** — skips what's already done. | ✅ |
| [`80-dotfiles.sh`](scripts/80-dotfiles.sh) | Symlink `notes/aliases.zsh` → `~/.oh-my-zsh/custom/aliases.zsh`. Generate `~/.gitconfig` from `notes/gitconfig.txt`, prompt for identity (name + email). | ✅ |
| Script | Effect | Idempotent? |
| ---------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------- |
| [`10-base-packages.sh`](scripts/10-base-packages.sh) | `apt update` + install base packages (curl wget git build-essential ca-certificates gnupg software-properties-common) | ✅ |
| [`20-zsh.sh`](scripts/20-zsh.sh) | Install zsh + Oh My Zsh + Powerlevel10k + plugins (autosuggestions, syntax-highlighting). Patch `~/.zshrc` (theme + plugins + fzf hook) and `~/.bashrc` (exec zsh on interactive shells — `chsh` is blocked on the corp VM). | ✅ |
| [`30-cli-tools.sh`](scripts/30-cli-tools.sh) | Install `bat eza fd-find ripgrep fzf zoxide ncdu keychain` + `jq yq httpie make tree htop tmux direnv dnsutils unzip`. Aliases for the Debian-renamed binaries (`batcat`→`bat`, `fdfind`→`fd`). | ✅ |
| [`40-node.sh`](scripts/40-node.sh) | Install nvm. Install Node from the repo's `.nvmrc` (currently `24`). Enable corepack, pin pnpm to `package.json`'s `packageManager`. | ✅ |
| [`50-docker.sh`](scripts/50-docker.sh) | Install Docker CE + compose plugin from the Docker apt repo. Add the current user to the `docker` group. Enable `docker.service`. | ✅ |
| [`60-tuning.sh`](scripts/60-tuning.sh) | `fs.inotify.max_user_watches=524288` (Vite / Nx watch). Prompt for hostname (only if generic). Add a 4 GB swapfile if none. | ✅ |
| [`70-hardening.sh`](scripts/70-hardening.sh) | Best-effort UFW (allow SSH only, prompts before enabling), `unattended-upgrades` on security channel, `fail2ban` (opt-in — prompts before installing), sshd hardening (no root, no password — prompts before applying). **Probes before applying** — skips what's already done. | ✅ |
| [`80-dotfiles.sh`](scripts/80-dotfiles.sh) | Symlink `notes/aliases.zsh` → `~/.oh-my-zsh/custom/aliases.zsh`. Generate `~/.gitconfig` from `notes/gitconfig.txt`, prompt for identity (name + email). | ✅ |
After bootstrap, reload your shell to pick up the new PATH + zsh: