diff --git a/shell/point/config.go b/shell/point/config.go
index 34d8985f9..81b5cb333 100644
--- a/shell/point/config.go
+++ b/shell/point/config.go
@@ -30,8 +30,9 @@ const (
 )
 
 type InboundDetourAllocationConfig interface {
-	Strategy() string
-	Concurrency() int
+	Strategy() string // Allocation strategy of this inbound detour.
+	Concurrency() int // Number of handlers (ports) running in parallel.
+	Refresh() int     // Number of seconds before a handler is regenerated.
 }
 
 type InboundDetourConfig interface {
diff --git a/shell/point/json/inbound_detour.go b/shell/point/json/inbound_detour.go
index 50d779fbb..a7604e1b0 100644
--- a/shell/point/json/inbound_detour.go
+++ b/shell/point/json/inbound_detour.go
@@ -12,6 +12,11 @@ import (
 type InboundDetourAllocationConfig struct {
 	StrategyValue    string `json:"strategy"`
 	ConcurrencyValue int    `json:"concurrency"`
+	RefreshSec       int    `json:"refresh"`
+}
+
+func (this *InboundDetourAllocationConfig) Refresh() int {
+	return this.RefreshSec
 }
 
 func (this *InboundDetourAllocationConfig) Strategy() string {
diff --git a/shell/point/testing/mocks/config.go b/shell/point/testing/mocks/config.go
index 7085fc0ec..b094e9a4f 100644
--- a/shell/point/testing/mocks/config.go
+++ b/shell/point/testing/mocks/config.go
@@ -55,6 +55,11 @@ func (this *PortRange) To() v2net.Port {
 type InboundDetourAllocationConfig struct {
 	StrategyValue    string
 	ConcurrencyValue int
+	RefreshSec       int
+}
+
+func (this *InboundDetourAllocationConfig) Refresh() int {
+	return this.RefreshSec
 }
 
 func (this *InboundDetourAllocationConfig) Strategy() string {