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infrastructure/docs/16-ADGUARD-VLAN-PLAN.md
Kaloyan Danchev 4b766145b4 Add AdGuard DNS setup with automatic failover documentation 
- docs/16-ADGUARD-VLAN-PLAN.md: Implementation plan for AdGuard on VLANs
- docs/17-DNS-ADGUARD-FAILOVER.md: Complete DNS architecture with:
  - Dual AdGuard setup (MikroTik primary, Unraid secondary)
  - Automatic failover via Netwatch monitoring
  - NAT redirect rules for all VLANs
  - Sync configuration between instances
- docs/wip/CONSOLE-PORT-ETHER5.md: WIP plan for dedicated console port

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-31 17:22:18 +02:00

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# AdGuard Configuration Plan for VLAN Structure
**Created:** 2026-01-31
**Status:** IMPLEMENTED
**Prerequisites:** VLAN setup complete (doc 15)
**See Also:** [17-DNS-ADGUARD-FAILOVER.md](17-DNS-ADGUARD-FAILOVER.md) - Complete implementation with failover
---
## Overview
Configure AdGuard DNS filtering for the new VLAN-segmented network with:
- MikroTik container as primary DNS (172.17.0.2)
- Unraid AdGuard as secondary DNS (192.168.10.10)
- DNS redirect for all VLANs
- Different filtering policies per VLAN (Kids stricter)
---
## Current State
| Component | IP | Status |
|-----------|-----|--------|
| AdGuard (Unraid) | 192.168.10.10 | Running |
| AdGuard (MikroTik) | 172.17.0.2 | Not installed |
| adguardhome-sync | 172.18.0.27 | Running |
---
## Network Architecture (VLAN-Aware)
```
┌─────────────────────────────────────────────────────────────────────────┐
│ INTERNET │
│ │
│ Mobile/Remote ──► dns.xtrm-lab.org ──► WAN:853 (DoT) │
│ ──► WAN:8443 (DoH) │
└─────────────────────────────────────────────────────────────────────────┘
│
▼
┌─────────────────────────────────────────────────────────────────────────┐
│ MikroTik hAP ax³ │
│ 192.168.10.1 │
│ │
│ ┌───────────────────────────────────────────────────────────────┐ │
│ │ AdGuard Container │ │
│ │ 172.17.0.2 (primary) │ │
│ │ │ │
│ │ Ports: 53 (DNS), 80 (HTTP), 443 (HTTPS), 853 (DoT) │ │
│ └───────────────────────────────────────────────────────────────┘ │
│ │ │
│ ┌────────────────────────────┴────────────────────────────────┐ │
│ │ DNS Redirect Rules │ │
│ │ │ │
│ │ VLAN 10 (192.168.10.0/24) ─► 172.17.0.2:53 Management │ │
│ │ VLAN 20 (192.168.20.0/24) ─► 172.17.0.2:53 Trusted │ │
│ │ VLAN 25 (192.168.25.0/24) ─► 172.17.0.2:53 Kids │ │
│ │ VLAN 30 (192.168.30.0/24) ─► 172.17.0.2:53 IoT │ │
│ │ VLAN 40 (192.168.1.0/24) ─► 172.17.0.2:53 Catch-All │ │
│ └─────────────────────────────────────────────────────────────┘ │
└─────────────────────────────────────────────────────────────────────────┘
│
▼
┌─────────────────────────────────────────────────────────────────────────┐
│ Unraid (VLAN 10) │
│ 192.168.10.20 │
│ │
│ ┌───────────────────────────────────────────────────────────────┐ │
│ │ AdGuard Container (secondary) │ │
│ │ 192.168.10.10 │ │
│ │ │ │
│ │ Upstream: MikroTik AdGuard (172.17.0.2) │ │
│ │ Failover: Quad9 DoH │ │
│ └───────────────────────────────────────────────────────────────┘ │
│ │
│ ┌───────────────────────────────────────────────────────────────┐ │
│ │ adguardhome-sync │ │
│ │ 172.18.0.27 │ │
│ │ │ │
│ │ Syncs: MikroTik ◄─► Unraid (filters, rewrites, clients) │ │
│ └───────────────────────────────────────────────────────────────┘ │
└─────────────────────────────────────────────────────────────────────────┘
```
---
## Phase 1: MikroTik Container Setup
### 1.1 Create Container Infrastructure
```routeros
# Container mode (if not already enabled)
/system/device-mode/update container=yes
# Create veth interface
/interface veth add address=172.17.0.2/24 gateway=172.17.0.1 name=veth-adguard
# Add to bridge
/interface bridge port add bridge=bridge interface=veth-adguard
# Gateway IP for container network
/ip address add address=172.17.0.1/24 interface=veth-adguard
```
### 1.2 Create Container Mounts
```routeros
# Create USB directory structure first
/file print # verify usb1 exists
# Create mounts
/container mounts add name=agh-config src=usb1/adguard/conf dst=/opt/adguardhome/conf
/container mounts add name=agh-work src=usb1/adguard/work dst=/opt/adguardhome/work
```
### 1.3 Pull and Create Container
```routeros
# Environment variables
/container envs add name=agh-env key=TZ value="Europe/Sofia"
# Pull image and create container
/container add remote-image=adguard/adguardhome:latest \
interface=veth-adguard \
root-dir=usb1/adguard/root \
mounts=agh-config,agh-work \
envlist=agh-env \
dns=8.8.8.8 \
logging=yes \
start-on-boot=yes \
name=adguardhome
# Wait for extraction (check status)
/container print
# Start when status shows "stopped" (not "extracting")
/container start [find name=adguardhome]
```
---
## Phase 2: NAT Rules for All VLANs
### 2.1 Exception Rules (MUST BE FIRST)
```routeros
# Allow AdGuard containers' own DNS queries (prevent loops)
/ip firewall nat add chain=dstnat action=accept protocol=udp \
src-address=172.17.0.0/24 dst-port=53 \
comment="[DNS] Allow MikroTik AdGuard outbound" place-before=0
/ip firewall nat add chain=dstnat action=accept protocol=udp \
src-address=192.168.10.10 dst-port=53 \
comment="[DNS] Allow Unraid AdGuard outbound" place-before=1
/ip firewall nat add chain=dstnat action=accept protocol=tcp \
src-address=192.168.10.10 dst-port=53 \
comment="[DNS] Allow Unraid AdGuard outbound TCP" place-before=2
```
### 2.2 VLAN DNS Redirect Rules
```routeros
# VLAN 10 - Management (192.168.10.0/24)
/ip firewall nat add chain=dstnat action=dst-nat to-addresses=172.17.0.2 to-ports=53 \
protocol=udp src-address=192.168.10.0/24 dst-port=53 \
comment="[DNS] VLAN10 Mgmt redirect"
/ip firewall nat add chain=dstnat action=dst-nat to-addresses=172.17.0.2 to-ports=53 \
protocol=tcp src-address=192.168.10.0/24 dst-port=53 \
comment="[DNS] VLAN10 Mgmt redirect TCP"
# VLAN 20 - Trusted (192.168.20.0/24)
/ip firewall nat add chain=dstnat action=dst-nat to-addresses=172.17.0.2 to-ports=53 \
protocol=udp src-address=192.168.20.0/24 dst-port=53 \
comment="[DNS] VLAN20 Trusted redirect"
/ip firewall nat add chain=dstnat action=dst-nat to-addresses=172.17.0.2 to-ports=53 \
protocol=tcp src-address=192.168.20.0/24 dst-port=53 \
comment="[DNS] VLAN20 Trusted redirect TCP"
# VLAN 25 - Kids (192.168.25.0/24)
/ip firewall nat add chain=dstnat action=dst-nat to-addresses=172.17.0.2 to-ports=53 \
protocol=udp src-address=192.168.25.0/24 dst-port=53 \
comment="[DNS] VLAN25 Kids redirect"
/ip firewall nat add chain=dstnat action=dst-nat to-addresses=172.17.0.2 to-ports=53 \
protocol=tcp src-address=192.168.25.0/24 dst-port=53 \
comment="[DNS] VLAN25 Kids redirect TCP"
# VLAN 30 - IoT (192.168.30.0/24)
/ip firewall nat add chain=dstnat action=dst-nat to-addresses=172.17.0.2 to-ports=53 \
protocol=udp src-address=192.168.30.0/24 dst-port=53 \
comment="[DNS] VLAN30 IoT redirect"
/ip firewall nat add chain=dstnat action=dst-nat to-addresses=172.17.0.2 to-ports=53 \
protocol=tcp src-address=192.168.30.0/24 dst-port=53 \
comment="[DNS] VLAN30 IoT redirect TCP"
# VLAN 40 - Catch-All (192.168.1.0/24)
/ip firewall nat add chain=dstnat action=dst-nat to-addresses=172.17.0.2 to-ports=53 \
protocol=udp src-address=192.168.1.0/24 dst-port=53 \
comment="[DNS] VLAN40 CatchAll redirect"
/ip firewall nat add chain=dstnat action=dst-nat to-addresses=172.17.0.2 to-ports=53 \
protocol=tcp src-address=192.168.1.0/24 dst-port=53 \
comment="[DNS] VLAN40 CatchAll redirect TCP"
```
### 2.3 Masquerade Rules for Return Traffic
```routeros
# Masquerade for all VLAN subnets to AdGuard
/ip firewall nat add chain=srcnat action=masquerade protocol=udp \
src-address=192.168.10.0/24 dst-address=172.17.0.2 dst-port=53 \
comment="[DNS] VLAN10 masquerade"
/ip firewall nat add chain=srcnat action=masquerade protocol=udp \
src-address=192.168.20.0/24 dst-address=172.17.0.2 dst-port=53 \
comment="[DNS] VLAN20 masquerade"
/ip firewall nat add chain=srcnat action=masquerade protocol=udp \
src-address=192.168.25.0/24 dst-address=172.17.0.2 dst-port=53 \
comment="[DNS] VLAN25 masquerade"
/ip firewall nat add chain=srcnat action=masquerade protocol=udp \
src-address=192.168.30.0/24 dst-address=172.17.0.2 dst-port=53 \
comment="[DNS] VLAN30 masquerade"
/ip firewall nat add chain=srcnat action=masquerade protocol=udp \
src-address=192.168.1.0/24 dst-address=172.17.0.2 dst-port=53 \
comment="[DNS] VLAN40 masquerade"
```
### 2.4 External Access (DoT/DoH)
```routeros
# DoT (DNS over TLS) - port 853
/ip firewall nat add chain=dstnat action=dst-nat to-addresses=172.17.0.2 to-ports=853 \
protocol=tcp in-interface=ether1 dst-port=853 \
comment="[DNS] DoT external"
# DoH (DNS over HTTPS) - port 8443 → 443
/ip firewall nat add chain=dstnat action=dst-nat to-addresses=172.17.0.2 to-ports=443 \
protocol=tcp in-interface=ether1 dst-port=8443 \
comment="[DNS] DoH external"
```
### 2.5 Web UI Access
```routeros
# AdGuard Web UI on port 3000 from Management VLAN
/ip firewall nat add chain=dstnat action=dst-nat to-addresses=172.17.0.2 to-ports=80 \
protocol=tcp dst-address=192.168.10.1 dst-port=3000 \
comment="[DNS] AdGuard Web UI"
```
---
## Phase 3: Firewall Filter Rules
```routeros
# Allow traffic to container network
/ip firewall filter add chain=input action=accept dst-address=172.17.0.0/24 \
comment="[Container] Allow to container network" place-before=0
/ip firewall filter add chain=input action=accept src-address=172.17.0.0/24 \
comment="[Container] Allow from container network" place-before=1
/ip firewall filter add chain=forward action=accept dst-address=172.17.0.0/24 \
comment="[Container] Forward to container network"
/ip firewall filter add chain=forward action=accept src-address=172.17.0.0/24 \
comment="[Container] Forward from container network"
```
---
## Phase 4: MikroTik DNS Settings
```routeros
# Point MikroTik's own DNS resolver to AdGuard container
/ip dns set servers=172.17.0.2 allow-remote-requests=yes
```
---
## Phase 5: AdGuard Initial Configuration
### 5.1 Access Web UI
After container starts, access: `http://192.168.10.1:3000`
### 5.2 Initial Setup Wizard
| Setting | Value |
|---------|-------|
| Admin Interface | All interfaces, port 80 |
| DNS Server | All interfaces, port 53 |
| Username | admin |
| Password | (set secure password) |
### 5.3 Upstream DNS
```
# Primary (encrypted)
https://dns.quad9.net/dns-query
# Fallback to Unraid AdGuard
192.168.10.10
```
### 5.4 Bootstrap DNS
```
9.9.9.9
149.112.112.112
```
### 5.5 TLS Configuration (for DoT/DoH)
| Setting | Value |
|---------|-------|
| Server Name | dns.xtrm-lab.org |
| Certificate Path | /opt/adguardhome/conf/fullchain.pem |
| Key Path | /opt/adguardhome/conf/privkey.pem |
**Certificate upload:**
```bash
# From Mac - copy certificates to MikroTik USB
scp -P 2222 /path/to/fullchain.pem xtrm@192.168.10.1:usb1/adguard/conf/
scp -P 2222 /path/to/privkey.pem xtrm@192.168.10.1:usb1/adguard/conf/
```
---
## Phase 6: Client Configuration per VLAN
### 6.1 DHCP Network Settings
Update each VLAN's DHCP to advertise AdGuard as DNS:
```routeros
/ip dhcp-server network
set [find address=192.168.10.0/24] dns-server=192.168.10.10
set [find address=192.168.20.0/24] dns-server=192.168.10.10
set [find address=192.168.25.0/24] dns-server=192.168.10.10
set [find address=192.168.30.0/24] dns-server=192.168.10.10
set [find address=192.168.1.0/24] dns-server=192.168.10.10
```
**Note:** We use 192.168.10.10 (Unraid AdGuard) as the advertised DNS because:
1. Clients can reach it directly on VLAN 10
2. The NAT redirect still captures all DNS traffic to 172.17.0.2
3. If redirect fails, clients fall back to Unraid AdGuard
---
## Phase 7: AdGuard Sync Configuration
### 7.1 Update adguardhome-sync on Unraid
Edit `/mnt/user/appdata/adguardhome-sync/adguardhome-sync.yaml`:
```yaml
origin:
url: http://172.17.0.2 # MikroTik AdGuard (via router internal)
username: admin
password: YOUR_PASSWORD
replicas:
- url: http://192.168.10.10 # Unraid AdGuard
username: admin
password: YOUR_PASSWORD
cron: "0 */30 * * * *" # Every 30 minutes
api:
port: 8080
features:
dns:
rewrites: true
filters: true
clients: true
services: true
```
### 7.2 Restart Sync Container
```bash
docker restart adguardhome-sync
```
---
## Phase 8: Kids VLAN Special Configuration (Optional)
For stricter filtering on VLAN 25 (Kids), you can:
### Option A: Separate AdGuard Client Profile
In AdGuard → Settings → Client Settings, add clients for Kids VLAN:
- Identifier: 192.168.25.0/24
- Name: Kids Devices
- Enable: SafeSearch, Block Adult Sites
- Custom filters: stricter blocklists
### Option B: Redirect to Different DNS (More Complex)
Create separate DNS redirect for VLAN 25 to a different filtering service.
---
## Verification Checklist
After implementation, verify:
- [ ] Container running: `/container print` shows "running"
- [ ] DNS resolution: `:resolve google.com server=172.17.0.2`
- [ ] VLAN 10 DNS: `nslookup google.com` from Unraid
- [ ] VLAN 20 DNS: Test from trusted device
- [ ] VLAN 25 DNS: Test from kids device
- [ ] VLAN 30 DNS: Test from IoT device
- [ ] VLAN 40 DNS: Test from catch-all device
- [ ] DoT external: `kdig @dns.xtrm-lab.org +tls google.com`
- [ ] DoH external: `curl https://dns.xtrm-lab.org:8443/dns-query?name=google.com`
- [ ] Web UI accessible: `http://192.168.10.1:3000`
- [ ] Sync working: Check adguardhome-sync logs
---
## Troubleshooting
### Container won't start
```routeros
# Check container status
/container print detail
# Check logs
:log print where topics~"container"
# Common fix: recreate container
/container remove [find name=adguardhome]
# Then repeat Phase 1.3
```
### DNS not redirecting
```routeros
# Check NAT rules are active
/ip firewall nat print where comment~"DNS"
# Test packet flow
/tool sniffer quick port=53
```
### Sync not working
```bash
# On Unraid, check sync logs
docker logs adguardhome-sync
# Verify connectivity
curl -u admin:password http://172.17.0.2/control/status
```
---
## Quick Reference Commands
```routeros
# Check AdGuard container
/container print where name=adguardhome
# Restart AdGuard
/container stop [find name=adguardhome]
/container start [find name=adguardhome]
# Test DNS
:resolve google.com server=172.17.0.2
# Check DNS NAT rules
/ip firewall nat print where comment~"DNS"
# Backup before changes
/system backup save name=pre-adguard-$(date)
```
---
## Files Location
| Item | Location |
|------|----------|
| MikroTik AdGuard Config | usb1/adguard/conf/AdGuardHome.yaml |
| MikroTik AdGuard Work | usb1/adguard/work/ |
| MikroTik TLS Certs | usb1/adguard/conf/*.pem |
| Unraid AdGuard Config | /mnt/user/appdata/adguardhome/ |
| Sync Config | /mnt/user/appdata/adguardhome-sync/ |
---
## Implementation Order
1. **Backup MikroTik** - `/system backup save name=pre-adguard`
2. **Phase 1** - Container setup (requires device mode update + reboot)
3. **Phase 2** - NAT rules (careful with order!)
4. **Phase 3** - Firewall filters
5. **Phase 4** - MikroTik DNS settings
6. **Test** - Verify DNS works
7. **Phase 5** - AdGuard web configuration
8. **Phase 6** - DHCP updates
9. **Phase 7** - Sync setup
10. **Phase 8** - Kids filtering (optional)
---
**Document Version:** 1.0
**Last Updated:** 2026-01-31
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