diff --git a/easytier-gui/src/types/network.ts b/easytier-gui/src/types/network.ts
new file mode 100644
index 0000000..286bb48
--- /dev/null
+++ b/easytier-gui/src/types/network.ts
@@ -0,0 +1,72 @@
+import { v4 as uuidv4 } from 'uuid';
+
+export enum NetworkingMethod {
+  PublicServer = "PublicServer",
+  Manual = "Manual",
+  Standalone = "Standalone",
+}
+
+export interface NetworkConfig {
+  instance_id: string,
+
+  virtual_ipv4: string
+  network_name: string
+  network_secret: string
+
+  networking_method: NetworkingMethod,
+
+  public_server_url: string,
+  peer_urls: Array<string>,
+
+  proxy_cidrs: Array<string>,
+
+  enable_vpn_portal: boolean,
+  vpn_portal_listne_port: number,
+  vpn_portal_client_network_addr: string,
+  vpn_portal_client_network_len: number,
+
+  advanced_settings: boolean,
+
+  listener_urls: Array<string>,
+  rpc_port: number,
+}
+
+export const DEFAULT_NETWORK_CONFIG = (): NetworkConfig => {
+  return {
+    instance_id: uuidv4(),
+
+    virtual_ipv4: "",
+    network_name: "default",
+    network_secret: "",
+
+    networking_method: NetworkingMethod.PublicServer,
+
+    public_server_url: "tcp://easytier.public.kkrainbow.top:11010",
+    peer_urls: [],
+
+    proxy_cidrs: [],
+
+    enable_vpn_portal: false,
+    vpn_portal_listne_port: 22022,
+    vpn_portal_client_network_addr: "",
+    vpn_portal_client_network_len: 24,
+
+    advanced_settings: false,
+
+    listener_urls: [
+      "tcp://0.0.0.0:11010",
+      "udp://0.0.0.0:11010",
+      "wg://0.0.0.0:11011",
+    ],
+    rpc_port: 15888,
+  }
+}
+
+export interface NetworkInstance {
+  instance_id: string,
+
+  running: boolean,
+  error_msg: string,
+
+  detail: any,
+}
\ No newline at end of file