Add ports listener feature

config/config.go

@@ -13,6 +13,7 @@ type Config struct {
 	Store    StoreConfig    `toml:"Store"`
 	Honeypot HoneypotConfig `toml:"Honeypot"`
 	Frontend FrontendConfig `toml:"Frontend"`
+	Ports    PortsConfig    `toml:"Ports"`
 }
 type StoreConfig struct {
 	Type        string              `toml:"Type"`
@@ -46,6 +47,13 @@ type FrontendAutocertConfig struct {
 	RedirectHTTP bool     `toml:"RedirectHTTP"`
 }
 
+type PortsConfig struct {
+	Enable   bool     `toml:"Enable"`
+	Addr     string   `toml:"Addr"`
+	TCPPorts []string `toml:"TCPPorts"`
+	UDPPorts []string `toml:"UDPPorts"`
+}
+
 func FromReader(r io.Reader) (Config, error) {
 	var c Config