Can configure network NAT settings from UI

virtweb_frontend/src/api/NetworksApi.ts

@@ -13,10 +13,28 @@ export interface DHCPConfig {
   hosts: DHCPHost[];
 }
 
+export type NatSource =
+  | { type: "interface"; name: string }
+  | { type: "ip"; ip: string };
+
+export type NatHostPort =
+  | { type: "single"; port: number }
+  | { type: "range"; start: number; end: number };
+
+export interface NatEntry {
+  protocol: "TCP" | "UDP" | "Both";
+  host_addr: NatSource;
+  host_port: NatHostPort;
+  guest_addr: string;
+  guest_port: number;
+  comment?: string;
+}
+
 export interface IpConfig {
   bridge_address: string;
   prefix: number;
   dhcp?: DHCPConfig;
+  nat?: NatEntry[];
 }
 
 export interface NetworkInfo {

virtweb_frontend/src/api/ServerApi.ts

@@ -21,6 +21,7 @@ export interface ServerConstraints {
   disk_size: LenConstraint;
   net_name_size: LenConstraint;
   net_title_size: LenConstraint;
+  net_nat_comment_size: LenConstraint;
   dhcp_reservation_host_name: LenConstraint;
   nwfilter_name_size: LenConstraint;
   nwfilter_comment_size: LenConstraint;