diff --git a/model/setting.go b/model/setting.go
index a316172..e871591 100644
--- a/model/setting.go
+++ b/model/setting.go
@@ -10,6 +10,7 @@ type GlobalSetting struct {
 	DNSServers          []string  `json:"dns_servers"`
 	MTU                 int       `json:"mtu,string"`
 	PersistentKeepalive int       `json:"persistent_keepalive,string"`
+	ForwardMark         string    `json:"forward_mark"`
 	ConfigFilePath      string    `json:"config_file_path"`
 	UpdatedAt           time.Time `json:"updated_at"`
 }
diff --git a/store/jsondb/jsondb.go b/store/jsondb/jsondb.go
index 9088f54..643e5e5 100644
--- a/store/jsondb/jsondb.go
+++ b/store/jsondb/jsondb.go
@@ -90,6 +90,7 @@ func (o *JsonDB) Init() error {
 		globalSetting.DNSServers = []string{util.DefaultDNS}
 		globalSetting.MTU = util.DefaultMTU
 		globalSetting.PersistentKeepalive = util.DefaultPersistentKeepalive
+		globalSetting.ForwardMark = util.DefaultForwardMark
 		globalSetting.ConfigFilePath = util.DefaultConfigFilePath
 		globalSetting.UpdatedAt = time.Now().UTC()
 		o.conn.Write("server", "global_settings", globalSetting)
diff --git a/templates/global_settings.html b/templates/global_settings.html
index 81454dc..d3da9da 100644
--- a/templates/global_settings.html
+++ b/templates/global_settings.html
@@ -55,6 +55,12 @@ Global Settings
                                     name="persistent_keepalive" placeholder="Persistent Keepalive"
                                     value="{{if .globalSettings.PersistentKeepalive }}{{ .globalSettings.PersistentKeepalive }}{{end}}">
                             </div>
+                            <div class="form-group">
+                                <label for="forward_mark">Forward Mark</label>
+                                <input type="text" class="form-control" id="forward_mark"
+                                    name="forward_mark" placeholder="Forward Mark"
+                                    value="{{ .globalSettings.ForwardMark }}">
+                            </div>
                             <div class="form-group">
                                 <label for="config_file_path">Wireguard Config File Path</label>
                                 <input type="text" class="form-control" id="config_file_path"
@@ -141,8 +147,9 @@ Global Settings
             const dns_servers = $("#dns_servers").val().split(",");
             const mtu = $("#mtu").val();
             const persistent_keepalive = $("#persistent_keepalive").val();
+            const forward_mark = $("#forward_mark").val();
             const config_file_path = $("#config_file_path").val();
-            const data = {"endpoint_address": endpoint_address, "dns_servers": dns_servers, "mtu": mtu, "persistent_keepalive": persistent_keepalive, "config_file_path": config_file_path};
+            const data = {"endpoint_address": endpoint_address, "dns_servers": dns_servers, "mtu": mtu, "persistent_keepalive": persistent_keepalive, "forward_mark": forward_mark, "config_file_path": config_file_path};
 
             $.ajax({
                 cache: false,
@@ -211,6 +218,9 @@ Global Settings
                     },
                     config_file_path: {
                         required: true
+                    },
+                    forward_mark: {
+                        required: false
                     }
                 },
                 messages: {
@@ -255,4 +265,4 @@ Global Settings
             });
         });
     </script>
-{{end}}
\ No newline at end of file
+{{end}}
diff --git a/util/config.go b/util/config.go
index 80cbc9c..4d2c05e 100644
--- a/util/config.go
+++ b/util/config.go
@@ -26,6 +26,7 @@ const (
 	DefaultDNS                 = "1.1.1.1"
 	DefaultMTU                 = 1450
 	DefaultPersistentKeepalive = 15
+	DefaultForwardMark         = "0xca6c"
 	DefaultConfigFilePath      = "/etc/wireguard/wg0.conf"
 	UsernameEnvVar             = "WGUI_USERNAME"
 	PasswordEnvVar             = "WGUI_PASSWORD"
diff --git a/util/util.go b/util/util.go
index 7c347a9..3fe986d 100644
--- a/util/util.go
+++ b/util/util.go
@@ -55,11 +55,17 @@ func BuildClientConfig(client model.Client, server model.Server, setting model.G
 		peerPersistentKeepalive = fmt.Sprintf("PersistentKeepalive = %d\n", setting.PersistentKeepalive)
 	}
 
+	forwardMark := ""
+	if setting.ForwardMark != DefaultForwardMark {
+		forwardMark = fmt.Sprintf("FwMark = %s\n", setting.ForwardMark)
+	}
+
 	// build the config as string
 	strConfig := "[Interface]\n" +
 		clientAddress +
 		clientPrivateKey +
 		clientDNS +
+		forwardMark +
 		"\n[Peer]\n" +
 		peerPublicKey +
 		peerPresharedKey +