diff --git a/controllers/casbin_api.go b/controllers/casbin_api.go
index 4d72f9bb..cede5b76 100644
--- a/controllers/casbin_api.go
+++ b/controllers/casbin_api.go
@@ -37,6 +37,11 @@ func (c *ApiController) Enforce() {
 	resourceId := c.Input().Get("resourceId")
 	enforcerId := c.Input().Get("enforcerId")
 
+	if len(c.Ctx.Input.RequestBody) == 0 {
+		c.ResponseError("The request body should not be empty")
+		return
+	}
+
 	var request object.CasbinRequest
 	err := json.Unmarshal(c.Ctx.Input.RequestBody, &request)
 	if err != nil {
diff --git a/routers/base.go b/routers/base.go
index 997d1d99..d92572ed 100644
--- a/routers/base.go
+++ b/routers/base.go
@@ -190,5 +190,5 @@ func isHostIntranet(s string) bool {
 		return false
 	}
 
-	return ip.IsPrivate()
+	return ip.IsPrivate() || ip.IsLoopback() || ip.IsLinkLocalUnicast() || ip.IsLinkLocalMulticast()
 }