# Configuration Reference

Complete reference for configuring NetVisor server and daemon components.

## Table of Contents

- [Configuration Priority](#configuration-priority)
- [Daemon Configuration](#daemon-configuration)
- [Server Configuration](#server-configuration)
- [UI Configuration](#ui-configuration)
- [OIDC Setup](#oidc-setup)
- [Session Security](#session-security)
- [Environment Files](#environment-files)

## Configuration Priority

NetVisor uses the following priority order (highest to lowest):

1. **Command-line arguments** (highest priority)
2. **Environment variables**
3. **Configuration file** (daemon only)
4. **Default values** (lowest priority)

Later sources override earlier ones. For example, an environment variable overrides the config file but is overridden by a command-line argument.

## Daemon Configuration

### Configuration Methods

**Command-line arguments**:

```bash
netvisor-daemon --server-url http://192.168.1.100:60072 --api-key YOUR_KEY
```

**Environment variables**:

```bash
export NETVISOR_SERVER_URL=http://192.168.1.100:60072
export NETVISOR_DAEMON_API_KEY=YOUR_KEY
netvisor-daemon
```

**Docker environment**:

```yaml
environment:
  - NETVISOR_SERVER_URL=http://192.168.1.100:60072
  - NETVISOR_DAEMON_API_KEY=YOUR_KEY
```

**Configuration file**:

The daemon automatically creates a config file at:

- **Linux**: `~/.config/netvisor/daemon/config.json`
- **macOS**: `~/Library/Application Support/com.netvisor.daemon/config.json`
- **Windows**: `%APPDATA%\netvisor\daemon\config.json`

The config file stores runtime state (daemon ID, host ID) alongside your settings. Command-line and environment variables take priority over the file.

### Parameter Reference
<!-- DAEMON_CONFIG_TABLE_START -->
| Parameter | CLI Flag | Environment Variable | Config File Key | Default | Description |
|-----------|----------|---------------------|-----------------|---------|-------------|
| **Server URL** | `--server-url` | `NETVISOR_SERVER_URL` | `server_url` | `http://127.0.0.1:60072` | URL where the daemon can reach the server |
| **API Key** | `--daemon-api-key` | `NETVISOR_DAEMON_API_KEY` | `api_key` | *Required* | Authentication key for daemon (generated via UI) |
| **Mode** | `--mode` | `NETVISOR_MODE` | `mode` | Push | Select whether the daemon will Pull work from the server or have work Pushed to it |
| **Network ID** | `--network-id` | `NETVISOR_NETWORK_ID` | `network_id` | *Auto-assigned* | UUID of the network to scan |
| **Daemon URL** | `--daemon-url` | `NETVISOR_DAEMON_URL` | `daemon_url` | detected IP + Daemon Port | Public URL where server can reach daemon. Defaults to auto-detected IP + Daemon Port if not set |
| **Daemon Port** | `--daemon-port` or `-p` | `NETVISOR_DAEMON_PORT` | `port` | `60073` | Port for daemon to listen on |
| **Bind Address** | `--bind-address` | `NETVISOR_BIND_ADDRESS` | `bind_address` | `0.0.0.0` | IP address to bind daemon to |
| **Daemon Name** | `--name` | `NETVISOR_NAME` | `name` | `netvisor-daemon` | Name for this daemon |
| **Log Level** | `--log-level` | `NETVISOR_LOG_LEVEL` | `log_level` | `info` | Logging verbosity |
| **Heartbeat Interval** | `--heartbeat-interval` | `NETVISOR_HEARTBEAT_INTERVAL` | `heartbeat_interval` | `30` | Seconds between heartbeat updates / work requests (for daemons in pull mode) to server |
| **Concurrent Scans** | `--concurrent-scans` | `NETVISOR_CONCURRENT_SCANS` | `concurrent_scans` | *Auto* | Maximum parallel host scans |
| **Allow Self-Signed Certificates** | `--allow-self-signed-certs` | `NETVISOR_ALLOW_SELF_SIGNED_CERTS` | `allow_self_signed_certs` | *None* | Allow self-signed certs for daemon -> server connections |
| **Docker Proxy** | `--docker-proxy` | `NETVISOR_DOCKER_PROXY` | `docker_proxy` | *None* | Optional proxy for Docker API. Can use both non-SSL and SSL proxy; SSL proxy requires additional SSL config vars |
| **Docker SSL Proxy Cert Path** | `--docker-proxy-ssl-cert` | `NETVISOR_DOCKER_PROXY_SSL_CERT` | `docker_proxy_ssl_cert` | *None* | Path to SSL certificate if using a docker proxy with SSL |
| **Docker SSL Proxy Key Path** | `--docker-proxy-ssl-key` | `NETVISOR_DOCKER_PROXY_SSL_KEY` | `docker_proxy_ssl_key` | *None* | Path to SSL private key if using a docker proxy with SSL |
| **Docker SSL Proxy Chain Path** | `--docker-proxy-ssl-chain` | `NETVISOR_DOCKER_PROXY_SSL_CHAIN` | `docker_proxy_ssl_chain` | *None* | Path to SSL chain if using a docker proxy with SSL |
<!-- DAEMON_CONFIG_TABLE_END -->
### Concurrent Scans

Controls how many hosts the daemon scans simultaneously during network discovery.

**Default behavior**: Auto-detected based on system resources

- Calculates based on available memory
- Typical range: 10-20 for most systems
- Adjusts to prevent memory exhaustion

**When to set manually**:

- System crashes during scans
- Memory errors in logs
- Very large networks (100+ hosts)
- Resource-constrained devices (Raspberry Pi)

**Recommended values**:

- **Raspberry Pi 4 (4GB)**: 5-10
- **Standard desktop**: 15-20
- **Server**: 20-30+
- **Low memory**: Start with 5, increase gradually

**Setting**:

```bash
# CLI
netvisor-daemon --concurrent-scans 10

# Environment
export NETVISOR_CONCURRENT_SCANS=10

# Docker
environment:
  - NETVISOR_CONCURRENT_SCANS=10
```

**Symptoms of too high**:

- Daemon crashes during scans
- "CONCURRENT_SCANS too high for this system" error
- Out of memory errors
- System becomes unresponsive

**Impact**:

- Lower value = slower scans, more stable
- Higher value = faster scans, more memory usage

## Server Configuration

### Configuration Methods

**Environment variables in docker-compose**:

```yaml
environment:
  - NETVISOR_SERVER_PORT=60072
  - DATABASE_URL=postgresql://postgres:password@db:5432/netvisor
```

**Command-line** (for binary builds):

```bash
./netvisor-server --port 60072 --database-url postgresql://...
```

### Parameter Reference

| Parameter | CLI Flag | Environment Variable | Default | Description |
|-----------|----------|---------------------|---------|-------------|
| **Server Public URL** | `--public-url` | `NETVISOR_PUBLIC_URL` | `http://localhost:60072` | Public URL for webhooks, email links, etc |
| **Server Port** | `--server-port` | `NETVISOR_SERVER_PORT` | `60072` | Port for server to listen on |
| **Database URL** | `--database-url` | `NETVISOR_DATABASE_URL` | *Required* | PostgreSQL connection string |
| **Log Level** | `--log-level` | `NETVISOR_LOG_LEVEL` | `info` | Logging verbosity: `trace`, `debug`, `info`, `warn`, `error` |
| **Secure Cookies** | `--use-secure-session-cookies` | `NETVISOR_USE_SECURE_SESSION_COOKIES` | `false` | Enable HTTPS-only cookies |
| **Integrated Daemon URL** | `--integrated-daemon-url` | `NETVISOR_INTEGRATED_DAEMON_URL` | `http://172.17.0.1:60073` | URL to reach daemon in default docker compose |
| **Disable Registration** | `--disable-registration` | `NETVISOR_DISABLE_REGISTRATION` | `false` | Disable new user registration |
| **SMTP Username** | `--smtp-username` | `NETVISOR_SMTP_USERNAME` | - | SMTP username for email features (password reset, notifications) |
| **SMTP Password** | `--smtp-password` | `NETVISOR_SMTP_PASSWORD` | - | SMTP password for email authentication |
| **SMTP Relay** | `--smtp-relay` | `NETVISOR_SMTP_RELAY` | - | SMTP server address (e.g., `smtp.gmail.com`) |
| **SMTP Email** | `--smtp-email` | `NETVISOR_SMTP_EMAIL` | - | Sender email address for outgoing emails |
| **Client IP Source** | `--client-ip-source` | `NETVISOR_CLIENT_IP_SOURCE` | - | Source of IP address from request headers, used to log accurate IP address in auth logs while using a reverse proxy. Refer to [axum-client-ip](https://github.com/imbolc/axum-client-ip?tab=readme-ov-file#configurable-vs-specific-extractors) docs for values you can set. |

### Integrated Daemon URL

The integrated daemon runs in a separate container and needs to reach the server. The default assumes Docker's bridge network gateway is `172.17.0.1`.

**Check your bridge gateway**:

```bash
docker network inspect bridge | grep Gateway
```

**If different**, update in docker-compose.yml:

```yaml
environment:
  - NETVISOR_INTEGRATED_DAEMON_URL=http://YOUR_GATEWAY_IP:60073
```

### SMTP Configuration

SMTP settings enable email-based features such as password reset.

**All SMTP parameters are optional.** If not configured, email features will be disabled.

**Configuration**:

```yaml
environment:
  - NETVISOR_SMTP_RELAY=smtp.gmail.com:587
  - NETVISOR_SMTP_USERNAME=your-email@gmail.com
  - NETVISOR_SMTP_PASSWORD=your-app-password
  - NETVISOR_SMTP_EMAIL=netvisor@yourdomain.com
```

## UI Configuration

The UI automatically uses the hostname and port from your browser's address bar to reach the API.

**No configuration needed** for standard deployments where UI and API are on the same domain.

### Advanced: API on Different Domain

If your API server is on a different hostname than where the UI is served (uncommon):

Rebuild the Docker image with build arguments:

```bash
docker build \
  --build-arg PUBLIC_SERVER_HOSTNAME=api.example.com \
  --build-arg PUBLIC_SERVER_PORT=8080 \
  -f backend/Dockerfile \
  -t netvisor-server:custom \
  .
```

Then use your custom image in docker-compose:

```yaml
netvisor-server:
  image: netvisor-server:custom
  # ... rest of config
```

## OIDC Setup

NetVisor supports OpenID Connect (OIDC) for enterprise authentication with providers like Authentik, Keycloak, Auth0, Okta, PocketID, and others.

### Quick Start

1. Copy `oidc.toml.example` to `oidc.toml`
2. Configure your provider settings (see examples below)
3. Mount the file in docker-compose (see [Docker Compose Setup](#oidc-with-docker-compose))
4. Restart the server

### Configuration File Format

```toml
[[oidc_providers]]
name = "Provider Name"           # Display name in UI
slug = "provider-slug"           # Used in callback URL (lowercase, no spaces)
logo = "https://..."             # Optional: logo URL for UI
issuer_url = "https://..."       # Provider's OIDC issuer URL
client_id = "your-client-id"
client_secret = "your-client-secret"
```

You can configure multiple providers by adding multiple `[[oidc_providers]]` sections.

### Callback URL Format

Configure this URL in your OIDC provider's redirect/callback settings:

```
http://your-netvisor-domain:60072/api/auth/oidc/{slug}/callback
```

Replace `{slug}` with the slug value from your oidc.toml. For example, if `slug = "authentik"`:

```
http://netvisor.local:60072/api/auth/oidc/authentik/callback
```

**Required scopes**: `openid`, `email`, `profile` (profile is optional but recommended)

### OIDC with Docker Compose

Add the following volume mount to your `netvisor-server` service:

```yaml
services:
  netvisor-server:
    image: mayanayza/netvisor-server:latest
    volumes:
      - ./oidc.toml:/oidc.toml:ro
    # ... rest of config
```

### Provider-Specific Examples

#### Authentik

1. **Create Application** in Authentik Admin → Applications → Create:
   - Name: `NetVisor`
   - Slug: `netvisor`
   - Provider: Create a new OAuth2/OpenID Provider

2. **Configure Provider**:
   - Name: `NetVisor OIDC`
   - Authorization flow: `default-provider-authorization-implicit-consent`
   - Client type: `Confidential`
   - Redirect URIs: `http://your-netvisor:60072/api/auth/oidc/authentik/callback`
   - Copy the Client ID and Client Secret

3. **Find your Issuer URL**:
   - Go to Providers → your provider → OpenID Configuration Issuer
   - Usually: `https://auth.yourdomain.com/application/o/netvisor/`
   - **Important**: Remove trailing slash if present (see [Common Issues](#common-oidc-issues))

4. **Configure oidc.toml**:

```toml
[[oidc_providers]]
name = "Authentik"
slug = "authentik"
logo = "https://cdn.jsdelivr.net/gh/homarr-labs/dashboard-icons/svg/authentik.svg"
issuer_url = "https://auth.yourdomain.com/application/o/netvisor"
client_id = "your-client-id"
client_secret = "your-client-secret"
```

#### Keycloak

1. **Create Client** in Keycloak Admin → Clients → Create:
   - Client ID: `netvisor`
   - Client type: `OpenID Connect`
   - Client authentication: `On`

2. **Configure Client Settings**:
   - Valid redirect URIs: `http://your-netvisor:60072/api/auth/oidc/keycloak/callback`
   - Web origins: `http://your-netvisor:60072`

3. **Get Credentials**:
   - Go to Credentials tab
   - Copy Client Secret

4. **Configure oidc.toml**:

```toml
[[oidc_providers]]
name = "Keycloak"
slug = "keycloak"
logo = "https://cdn.jsdelivr.net/gh/homarr-labs/dashboard-icons/svg/keycloak.svg"
issuer_url = "https://keycloak.yourdomain.com/realms/your-realm"
client_id = "netvisor"
client_secret = "your-client-secret"
```

#### PocketID

1. **Create OIDC Client** in PocketID:
   - Go to OIDC Clients → Add Client
   - Name: `NetVisor`
   - Callback URLs: `http://your-netvisor:60072/api/auth/oidc/pocketid/callback`

2. **Copy Credentials**:
   - Client ID
   - Client Secret

3. **Configure oidc.toml**:

```toml
[[oidc_providers]]
name = "PocketID"
slug = "pocketid"
logo = "https://cdn.jsdelivr.net/gh/homarr-labs/dashboard-icons/svg/pocketid.svg"
issuer_url = "https://pocketid.yourdomain.com"
client_id = "your-client-id"
client_secret = "your-client-secret"
```

#### Auth0

1. **Create Application** in Auth0 Dashboard → Applications → Create:
   - Type: `Regular Web Application`
   - Name: `NetVisor`

2. **Configure Application Settings**:
   - Allowed Callback URLs: `http://your-netvisor:60072/api/auth/oidc/auth0/callback`
   - Allowed Web Origins: `http://your-netvisor:60072`

3. **Configure oidc.toml**:

```toml
[[oidc_providers]]
name = "Auth0"
slug = "auth0"
logo = "https://cdn.jsdelivr.net/gh/homarr-labs/dashboard-icons/svg/auth0.svg"
issuer_url = "https://your-tenant.auth0.com"
client_id = "your-client-id"
client_secret = "your-client-secret"
```

#### Okta

1. **Create App Integration** in Okta Admin → Applications → Create:
   - Sign-in method: `OIDC - OpenID Connect`
   - Application type: `Web Application`

2. **Configure Settings**:
   - Sign-in redirect URIs: `http://your-netvisor:60072/api/auth/oidc/okta/callback`
   - Sign-out redirect URIs: `http://your-netvisor:60072`

3. **Configure oidc.toml**:

```toml
[[oidc_providers]]
name = "Okta"
slug = "okta"
logo = "https://cdn.jsdelivr.net/gh/homarr-labs/dashboard-icons/svg/okta.svg"
issuer_url = "https://your-org.okta.com"
client_id = "your-client-id"
client_secret = "your-client-secret"
```

### Common OIDC Issues

#### "Unexpected issuer URI" error

```
Failed to generate auth URL: Validation error: unexpected issuer URI
`https://auth.example.com/app/` (expected `https://auth.example.com/app`)
```

**Cause**: Trailing slash mismatch between your config and what the provider returns.

**Solution**: Try both with and without trailing slash in `issuer_url`. The value must exactly match what your provider returns in its `.well-known/openid-configuration`.

To check what your provider expects:
```bash
curl https://your-provider/.well-known/openid-configuration | jq .issuer
```

#### "Invalid redirect URI" error

**Cause**: The callback URL in your provider doesn't match what NetVisor sends.

**Solution**: Ensure the redirect URI in your provider exactly matches:
```
http://your-netvisor:60072/api/auth/oidc/{slug}/callback
```

Common mistakes:
- Wrong protocol (http vs https)
- Wrong port
- Wrong slug (must match oidc.toml)
- Missing `/callback` at the end

#### OIDC button not appearing in UI

**Causes**:
1. oidc.toml file not mounted in Docker
2. oidc.toml has syntax errors
3. Server not restarted after adding config

**Solution**:
1. Verify the volume mount exists in docker-compose.yml
2. Validate TOML syntax (use a TOML validator)
3. Restart with `docker compose restart netvisor-server`
4. Check server logs: `docker logs netvisor-server`

#### "Connection refused" when authenticating

**Cause**: NetVisor server can't reach your OIDC provider.

**Solutions**:
1. Ensure the provider URL is reachable from the server container
2. If provider is internal, ensure Docker can resolve the hostname
3. Add provider to Docker's extra_hosts if needed:
   ```yaml
   extra_hosts:
     - "auth.internal:192.168.1.100"
   ```

## Session Security

### Secure Cookies

**Important**: Enable secure cookies when running NetVisor behind HTTPS.

```yaml
environment:
  - NETVISOR_USE_SECURE_SESSION_COOKIES=true
```

**When to enable**:

- Behind a reverse proxy with TLS (Nginx, Traefik, Caddy)
- Using a domain with HTTPS
- Production deployments

**When to disable** (default):

- Internal networks without HTTPS
- Development environments
- Accessing via IP address without TLS

**Effect**:

- `true`: Cookies marked as Secure, only sent over HTTPS
- `false`: Cookies sent over HTTP and HTTPS

## Environment Files

For easier management, use `.env` files:

**Create `.env`**:

```bash
# Database
NETVISOR_DATABASE_URL=postgresql://postgres:password@db:5432/netvisor

# Server
NETVISOR_SERVER_PORT=60072
NETVISOR_SERVER_PUBLIC_URL=http://your-domain.com:60072
NETVISOR_LOG_LEVEL=info
NETVISOR_USE_SECURE_SESSION_COOKIES=false

# SMTP (optional - for password reset and notifications)
NETVISOR_SMTP_RELAY=smtp.gmail.com:587
NETVISOR_SMTP_USERNAME=your-email@gmail.com
NETVISOR_SMTP_PASSWORD=your-app-password
NETVISOR_SMTP_EMAIL=netvisor@yourdomain.com

# Daemon
NETVISOR_INTEGRATED_DAEMON_URL=http://172.17.0.1:60073
```

**Reference in docker-compose.yml**:

```yaml
services:
  netvisor-server:
    image: mayanayza/netvisor-server:latest
    env_file:
      - .env
    # ... rest of config
```

---

**Next Steps**: See the [User Guide](USER_GUIDE.md) to learn how to use NetVisor's features.