windyboy
e501b93d65
- hosts/gfw.windy.lan.md: 3 NICs (eth2/VLAN10 ubunt_upg live), mosdns is now OpenClash's nameserver (not idle), rewrite VLAN10 Wi-Fi section to live-verified state - docs/lan-dns-architecture.md: mosdns on gfw no longer 闲置; note the recommended AGH+.36 companion architecture is still pending review
74 lines
3.4 KiB
Markdown
74 lines
3.4 KiB
Markdown
# gfw.windy.lan — OpenWrt LAN gateway
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## Role and access
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| Item | Value |
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|---|---|
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| Role | LAN gateway and OpenClash transparent/explicit-proxy host |
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| IPv4 | `192.168.66.1` |
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| SSH | `ssh -4 root@192.168.66.1` (key-only, verified 2026-08-06) |
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| OS | ImmortalWrt 25.12.0 (r37854), Linux `6.12.87`, x86/64 |
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| **Host** | **PVE VM 140 (`gfw`)** — 3 NICs: `net0`→vmbr0(LAN66/eth0), `net1`→vmbr1(LAN55/eth1, up but unaddressed), `net2`→VLAN10/`ubunt_upg`(eth2, `192.168.10.1/24`) (topology 2026-08-09; eth2/VLAN10 live verified 2026-08-11) |
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Do not store the root password in this repository.
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## OpenClash
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OpenClash runs `/etc/openclash/clash` (clash_meta core) with configuration
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`/etc/openclash/pass-cat.yaml`.
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- Core: **Mihomo Meta v1.19.29** (linux-amd64, with_gvisor; upgraded from
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`alpha-g9ae1cc2` on 2026-08-06, backup `clash_meta.bak.alpha-g9ae1cc2`) —
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tracked in Linear W1N-50
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- OpenClash app: **luci-app-openclash 0.47.133** (GitHub latest)
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- Mode: **fake-ip + TPROXY transparent proxy** (`operation_mode=fake-ip`,
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`en_mode=fake-ip`, `proxy_mode=rule`); fake-ip network `198.18.0.0/16`
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- DNS path: dnsmasq → clash DNS `127.0.0.1#7874` (`server=127.0.0.1#7874` in
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dnsmasq config); OpenClash custom DNS uses `mosdns` on `127.0.0.1:6052` as its
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`nameserver`/`default-nameserver` for DIRECT-rule real-IP resolution
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(`/etc/mosdns/config.yaml`): domestic domains → AGH `.36:53`, foreign →
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`223.5.5.5`/`119.29.29.29` (Chinese public DNS). mosdns is **not** in the
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client query path — LAN/VLAN10 clients receive fake-ip from clash :7874.
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- nft: OpenClash injects TPROXY/redirect + DNS-hijack rules into
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`table inet fw4`; a residual `table inet passwall` exists with 0 packets (unused)
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| Listener | Port |
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|---|---:|
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| HTTP | `7890` |
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| SOCKS | `7891` |
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| Redirect | `7892` |
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| Mixed | `7893` |
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| TPROXY | `7895` |
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| DNS | `7874` |
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| Dashboard | `9090` |
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`8443` is not an OpenClash listener and has no runtime nftables forwarding rule.
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It is included only in OpenClash's common TLS-sniffing port list.
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## VLAN 10 Wi-Fi
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`gfw`'s third NIC `eth2` hosts the `ubunt_upg` interface at `192.168.10.1/24`,
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serving the dedicated `ubnt-upg` SSID VLAN 10 (untagged access path from a
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VLAN-capable switch/trunk; AP management stays untagged on LAN66). The
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`ubunt_upg` zone runs the **only** DHCP server for `192.168.10.0/24` (UDP/67),
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allows DNS (53), and applies `192.168.10.0/24 → eth0 masquerade` (NAT) for
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Internet egress. `forward_ubunt_upg` isolates VLAN10 from LAN66/55 and RFC1918
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(deny counters 0, `accept_to_lan` passes).
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Live-verified 2026-08-11: an `ubnt-upg` client received `192.168.10.168` (lease
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in `/tmp/dhcp.leases`), the `192.168.10.0/24 masquerade` counter climbed
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(215 pkts/42KB), and the LAN55/LAN66 deny counters stayed 0 → VLAN10→LAN
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isolation holds. See
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[docs/lan-se5420-deployment-guide.md](../docs/lan-se5420-deployment-guide.md),
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[docs/unifi-openwrt-vlan10-implementation-examples.md](../docs/unifi-openwrt-vlan10-implementation-examples.md)
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## Operational note
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When OpenClash logs a LAN client request such as
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`<client> --> localhost:8443` followed by a connection refusal, it is normally
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an explicit-proxy client sending its own loopback request to the gateway. Fix
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the originating host's `NO_PROXY` / `no_proxy` configuration; do not create a
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listener on this router to mask the problem. See
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[the UniFi localhost proxy note](../docs/unifi-openclash-localhost.md).
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