notebookvb

WireGuard/NOTES.md

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+# WireGuard road-warrior na MikroTiku (router-hosted)
+
+Nastaveno 2026-06-18 podle runbooku `wireguard-mikrotik-runbook.md`.
+
+## Router
+- **MikrotikFirewall** (hEX, RouterOS 7.19.6), LAN IP `192.168.1.2`, SSH port **22**.
+- WAN = `pppoe-out1`, veřejná IP `78.80.38.51` (PPPoE, bere se jako statická).
+
+## DŮLEŽITÉ — proč port 51821, ne 51820
+Na routeru **už běží jiná WireGuard VPN na Unraidu** (`192.168.1.76`): NAT rule
+„WireGuard to Unraid" DST-NATuje příchozí UDP **51820** na Unraid. Proto tahle
+nová, **na routeru hostovaná** VPN běží na **UDP 51821** (51820 by se nikdy
+nedostalo k routeru). Existující Unraid VPN ani tunel `10.253.0.0/24` nejsou dotčené.
+
+## Parametry této VPN
+| | |
+|---|---|
+| WG rozhraní | `wg-vpn`, listen-port **51821** |
+| Server public key | `CGGFHYR83W8IuTB46cJ49IuL/tL3w4yu3o0hQh0Cxwo=` |
+| Tunelová síť | `10.10.10.0/24`, router `10.10.10.1` |
+| Klienti | `10.10.10.2` (client2), `.3` (client3), `.4` (client4) |
+| Endpoint | `78.80.38.51:51821` |
+| Split tunel | AllowedIPs = `192.168.1.0/24` (jen LAN přes VPN) |
+| DNS klientů | `192.168.1.2` (router) |
+
+## Přidané firewall pravidla (jen accept, nic nemazáno/nepřeřazeno)
+- input: accept udp dst-port 51821 in-interface=pppoe-out1  „WireGuard in (router)"
+- input: accept in-interface=wg-vpn  „WG -> router (DNS/ping)"  (DNS a ping na router z tunelu)
+- forward: accept in-interface=wg-vpn  „WG -> LAN"
+Všechna vložena PŘED příslušné `drop` v daném chainu.
+NAT hairpin **nepřidán** — LAN hosti mají router jako default gw, návratová cesta funguje.
+
+## Skripty
+- `rosrun.py` — spouští RouterOS příkazy přes SSH. Creds z env: `ROS_HOST/ROS_PORT/ROS_USER/ROS_PASS`.
+  Pozn.: v Git Bash nutné `MSYS_NO_PATHCONV=1` a příkazy přes stdin (ne `--cmd`, mangluje `/...`).
+- `gen_clients.py` — generuje klíče (wg.exe) + `.conf` + QR PNG do `wg-clients/`, a `_peers_add.rsc`.
+
+## Klientské konfigurace
+`wg-clients/clientN.conf` (import na notebook) + `wg-clients/clientN.png` (QR pro mobilní app).
+**Obsahují privátní klíče** — po rozdání na zařízení smaž, ať neleží zbytečně.
+
+## Test (jen zvenku, ne z LAN!)
+Telefon na mobilních datech → naskenuj QR → ověř `ping 192.168.1.2`. Z LAN to
+handshake neudělá (accept je vázán na in-interface=pppoe-out1, hairpin pro 51821 není).
+
+## Rollback
+```
+/interface wireguard peers remove [find interface=wg-vpn]
+/ip firewall filter remove [find comment="WG -> LAN"]
+/ip firewall filter remove [find comment="WG -> router (DNS/ping)"]
+/ip firewall filter remove [find comment="WireGuard in (router)"]
+/ip address remove [find interface=wg-vpn]
+/interface wireguard remove [find name=wg-vpn]
+```

WireGuard/gen_clients.py

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+#!/usr/bin/env python3
+"""Generate WireGuard road-warrior client configs + QR PNGs, and emit RouterOS peer-add commands."""
+import subprocess, pathlib, qrcode
+
+WG = r"C:\Program Files\WireGuard\wg"
+SERVER_PUB = "CGGFHYR83W8IuTB46cJ49IuL/tL3w4yu3o0hQh0Cxwo="
+ENDPOINT   = "78.80.38.51:51821"
+LAN        = "192.168.1.0/24"   # split tunnel -> only LAN goes through VPN
+DNS        = "192.168.1.2"      # router LAN IP
+
+CLIENTS = [2, 3, 4]
+outdir = pathlib.Path(__file__).resolve().parent / "wg-clients"
+outdir.mkdir(exist_ok=True)
+
+
+def wg(*args, inp=None):
+    return subprocess.run([WG, *args], input=inp, capture_output=True,
+                          text=True, check=True).stdout.strip()
+
+
+peer_cmds = []
+for i in CLIENTS:
+    name = f"client{i}"
+    priv = wg("genkey")
+    pub  = wg("pubkey", inp=priv)
+    psk  = wg("genpsk")
+
+    conf = f"""[Interface]
+PrivateKey = {priv}
+Address = 10.10.10.{i}/32
+DNS = {DNS}
+
+[Peer]
+PublicKey = {SERVER_PUB}
+PresharedKey = {psk}
+AllowedIPs = {LAN}
+Endpoint = {ENDPOINT}
+PersistentKeepalive = 25
+"""
+    (outdir / f"{name}.conf").write_text(conf, encoding="utf-8")
+
+    img = qrcode.make(conf)
+    img.save(outdir / f"{name}.png")
+
+    peer_cmds.append(
+        f'/interface wireguard peers add interface=wg-vpn '
+        f'public-key="{pub}" preshared-key="{psk}" '
+        f'allowed-address=10.10.10.{i}/32 comment="{name}"'
+    )
+    print(f"[ok] {name}: pub={pub} -> {name}.conf, {name}.png")
+
+(outdir / "_peers_add.rsc").write_text("\n".join(peer_cmds) + "\n", encoding="utf-8")
+print("\n--- RouterOS peer-add commands written to wg-clients/_peers_add.rsc ---")
+for c in peer_cmds:
+    print(c)

WireGuard/rollback_unraid_wg.rsc

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+# ROLLBACK — obnova Unraid WireGuard objektů na routeru MikrotikFirewall
+# Odstraněno 2026-06-18 na žádost uživatele. Spusť tyto příkazy pro obnovu.
+/ip firewall nat add chain=dstnat action=dst-nat to-addresses=192.168.1.76 to-ports=51820 protocol=udp in-interface=pppoe-out1 dst-port=51820 comment="WireGuard to Unraid"
+/ip firewall filter add chain=input action=accept protocol=udp in-interface=pppoe-out1 dst-port=51820 comment="Allow WireGuard"
+/ip firewall filter add chain=forward action=accept src-address=10.253.0.0/24 comment="Allow VPN to LAN"
+/ip firewall filter add chain=forward action=accept dst-address=10.253.0.0/24 comment="Allow LAN to VPN"
+/ip route add dst-address=10.253.0.0/24 gateway=192.168.1.76 comment="Route to WireGuard VPN via Unraid"
+# Pozn.: po obnově zkontroluj pořadí filter pravidel (accept musí být PŘED drop).

WireGuard/rosrun.py

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+#!/usr/bin/env python3
+"""Run RouterOS commands over SSH. Creds from env: ROS_HOST, ROS_PORT, ROS_USER, ROS_PASS.
+Commands: one per line on stdin, or via --cmd. Prints output per command."""
+import os, sys, paramiko
+
+host = os.environ["ROS_HOST"]
+port = int(os.environ.get("ROS_PORT", "22"))
+user = os.environ["ROS_USER"]
+pw   = os.environ["ROS_PASS"]
+
+cmds = []
+if "--cmd" in sys.argv:
+    cmds = [sys.argv[sys.argv.index("--cmd") + 1]]
+else:
+    cmds = [l.rstrip("\n") for l in sys.stdin if l.strip()]
+
+cli = paramiko.SSHClient()
+cli.set_missing_host_key_policy(paramiko.AutoAddPolicy())
+cli.connect(host, port=port, username=user, password=pw,
+            look_for_keys=False, allow_agent=False, timeout=20)
+
+for c in cmds:
+    print(f"\n===== CMD: {c}")
+    stdin, stdout, stderr = cli.exec_command(c, timeout=30)
+    out = stdout.read().decode("utf-8", "replace")
+    err = stderr.read().decode("utf-8", "replace")
+    sys.stdout.write(out)
+    if err.strip():
+        sys.stdout.write("--- stderr ---\n" + err)
+cli.close()

WireGuard/wg-clients/_peers_add.rsc

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+/interface wireguard peers add interface=wg-vpn public-key="nToZ1GzONgfW1ve3O1WeEpGbgzUMhDVKE7qrD/Jc23c=" preshared-key="Y6eHm6MbLa+tyleSgwbPc8oJqLZkXZkMEUJZDU7f5kg=" allowed-address=10.10.10.2/32 comment="client2"
+/interface wireguard peers add interface=wg-vpn public-key="tqA98HvVupGGYpR1PUe7/j9DO8MtaNP3Fh5tkpqgqD0=" preshared-key="94TmjBE+mTZi3KDy/tWefq/wXPpvmBtjPlX/LZnAKbE=" allowed-address=10.10.10.3/32 comment="client3"
+/interface wireguard peers add interface=wg-vpn public-key="j/3kzNQ6vmUL4xFmqq5PL6Qf1xVWPzVWEXoOkBIDxFk=" preshared-key="pHR1441168wSrjlLZ2E44J4WrHpLRuWdjfsNHk23CQ8=" allowed-address=10.10.10.4/32 comment="client4"

WireGuard/wg-clients/client2.conf

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+[Interface]
+PrivateKey = YPvh0rKU+xi82eQftBucCnuQzZNqk9jOHLwfEH0wsGk=
+Address = 10.10.10.2/32
+DNS = 192.168.1.2
+
+[Peer]
+PublicKey = CGGFHYR83W8IuTB46cJ49IuL/tL3w4yu3o0hQh0Cxwo=
+PresharedKey = Y6eHm6MbLa+tyleSgwbPc8oJqLZkXZkMEUJZDU7f5kg=
+AllowedIPs = 192.168.1.0/24
+Endpoint = 78.80.38.51:51821
+PersistentKeepalive = 25

WireGuard/wg-clients/client3.conf

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+[Interface]
+PrivateKey = 8JFWJp/zvoRYl7w2Jon0Xv+9YidiguiC26qGbr4ozlg=
+Address = 10.10.10.3/32
+DNS = 192.168.1.2
+
+[Peer]
+PublicKey = CGGFHYR83W8IuTB46cJ49IuL/tL3w4yu3o0hQh0Cxwo=
+PresharedKey = 94TmjBE+mTZi3KDy/tWefq/wXPpvmBtjPlX/LZnAKbE=
+AllowedIPs = 192.168.1.0/24
+Endpoint = 78.80.38.51:51821
+PersistentKeepalive = 25

WireGuard/wg-clients/client4.conf

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+[Interface]
+PrivateKey = oLcUtFkDW/e0/xmDgdBMlWIpGGL+eOvMxgnyXxtd5Ww=
+Address = 10.10.10.4/32
+DNS = 192.168.1.2
+
+[Peer]
+PublicKey = CGGFHYR83W8IuTB46cJ49IuL/tL3w4yu3o0hQh0Cxwo=
+PresharedKey = pHR1441168wSrjlLZ2E44J4WrHpLRuWdjfsNHk23CQ8=
+AllowedIPs = 192.168.1.0/24
+Endpoint = 78.80.38.51:51821
+PersistentKeepalive = 25