diff --git a/core/adapter/handler.go b/core/adapter/handler.go
index 715f663..9e4962f 100644
--- a/core/adapter/handler.go
+++ b/core/adapter/handler.go
@@ -1,8 +1,8 @@
 package adapter
 
-// Handler is a TCP/UDP connection handler that implements
+// TransportHandler is a TCP/UDP connection handler that implements
 // HandleTCPConn and HandleUDPConn methods.
-type Handler interface {
+type TransportHandler interface {
 	HandleTCP(TCPConn)
 	HandleUDP(UDPConn)
 }
diff --git a/core/stack.go b/core/stack.go
index fb7467c..8c7610b 100644
--- a/core/stack.go
+++ b/core/stack.go
@@ -14,7 +14,7 @@ import (
 )
 
 // CreateStackWithOptions creates *stack.Stack with given options.
-func CreateStackWithOptions(linkEP stack.LinkEndpoint, handler adapter.Handler, opts ...option.Option) (*stack.Stack, error) {
+func CreateStackWithOptions(linkEP stack.LinkEndpoint, handler adapter.TransportHandler, opts ...option.Option) (*stack.Stack, error) {
 	s := stack.New(stack.Options{
 		NetworkProtocols: []stack.NetworkProtocolFactory{
 			ipv4.NewProtocol,
diff --git a/engine/tunnel.go b/engine/tunnel.go
index cb40cbb..212717e 100644
--- a/engine/tunnel.go
+++ b/engine/tunnel.go
@@ -5,7 +5,7 @@ import (
 	"github.com/xjasonlyu/tun2socks/v2/tunnel"
 )
 
-var _ adapter.Handler = (*fakeTunnel)(nil)
+var _ adapter.TransportHandler = (*fakeTunnel)(nil)
 
 type fakeTunnel struct{}