diff --git a/app/models/fluentd/setting/in_syslog.rb b/app/models/fluentd/setting/in_syslog.rb
index 9ff270c..bacc574 100644
--- a/app/models/fluentd/setting/in_syslog.rb
+++ b/app/models/fluentd/setting/in_syslog.rb
@@ -6,17 +6,15 @@ class Fluentd
       register_plugin("input", "syslog")
 
       def self.initial_params
-        {
-          bind: "0.0.0.0",
-          port: 5140,
+        params = {
           parse_type: "syslog",
           parse: {
             "0" => {
               "type" => "syslog"
             }
-          },
-          protocol_type: :udp,
+          }
         }
+        super.compact.deep_merge(params)
       end
 
       def common_options
diff --git a/app/models/fluentd/setting/out_forward.rb b/app/models/fluentd/setting/out_forward.rb
index 2eeab4a..16b54ea 100644
--- a/app/models/fluentd/setting/out_forward.rb
+++ b/app/models/fluentd/setting/out_forward.rb
@@ -10,7 +10,7 @@ class Fluentd
       end
 
       def self.initial_params
-        {
+        params = {
           buffer_type: "memory",
           buffer: {
             "0" => {
@@ -23,6 +23,7 @@ class Fluentd
             }
           }
         }
+        super.except(:transport).compact.deep_merge(params)
       end
 
       # TODO overwrite this method to support transport parameter and transport section