PassWall is a LuCI application for OpenWrt routers that provides a unified management interface and runtime orchestration for proxy/VPN clients. In production it runs as a daemon-managed transparent proxy: it generates per-core JSON configurations for xray, sing-box, shadowsocks-rust, SSR, hysteria2, naiveproxy, and other engines; builds iptables/nftables transparent-proxy rules; integrates DNS-level routing through dnsmasq, smartdns, chinadns-ng, or dns2socks; and exposes a full web UI for node management, subscriptions, ACLs, shunt rules, health checks, load balancing via HAProxy, and server-side inbound configuration. The service is configured through UCI (`/etc/config/passwall`), with shell scripts as the main runtime dispatchers and Lua modules as the configuration-generation and LuCI-controller layer.