diff --git a/Cargo.lock b/Cargo.lock
index a11d68fea..d8c112fd6 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1568,6 +1568,7 @@ dependencies = [
  "protobuf-codegen-pure",
  "quinn",
  "rand 0.8.4",
+ "regex",
  "serde 1.0.133",
  "serde_derive",
  "serde_json 1.0.74",
diff --git a/libs/hbb_common/Cargo.toml b/libs/hbb_common/Cargo.toml
index 4dc7dcf86..d1868f5b5 100644
--- a/libs/hbb_common/Cargo.toml
+++ b/libs/hbb_common/Cargo.toml
@@ -28,6 +28,7 @@ confy = { git = "https://github.com/open-trade/confy" }
 dirs-next = "2.0"
 filetime = "0.2"
 sodiumoxide = "0.2"
+regex = "1.4"
 tokio-socks = { git = "https://github.com/fufesou/tokio-socks" }
 
 [target.'cfg(not(any(target_os = "android", target_os = "ios")))'.dependencies]
diff --git a/libs/hbb_common/src/lib.rs b/libs/hbb_common/src/lib.rs
index 38487a1a4..f84221b70 100644
--- a/libs/hbb_common/src/lib.rs
+++ b/libs/hbb_common/src/lib.rs
@@ -27,6 +27,7 @@ pub use anyhow::{self, bail};
 pub use futures_util;
 pub mod config;
 pub mod fs;
+pub use regex;
 pub use sodiumoxide;
 pub use tokio_socks;
 pub use tokio_socks::IntoTargetAddr;
diff --git a/src/client.rs b/src/client.rs
index ff4603776..29e2585b1 100644
--- a/src/client.rs
+++ b/src/client.rs
@@ -103,8 +103,33 @@ impl Drop for OboePlayer {
 
 impl Client {
     pub async fn start(peer: &str, conn_type: ConnType) -> ResultType<(Stream, bool)> {
+        match Self::_start(peer, conn_type).await {
+            Err(err) => {
+                let err_str = err.to_string();
+                if err_str.starts_with("Failed") {
+                    bail!(err_str + ": Please try later");
+                } else {
+                    return Err(err);
+                }
+            }
+            Ok(x) => Ok(x),
+        }
+    }
+
+    async fn _start(peer: &str, conn_type: ConnType) -> ResultType<(Stream, bool)> {
         // to-do: remember the port for each peer, so that we can retry easier
         let any_addr = Config::get_any_listen_addr();
+        if crate::is_ip(peer) {
+            return Ok((
+                socket_client::connect_tcp(
+                    crate::check_port(peer, RELAY_PORT + 1),
+                    any_addr,
+                    RENDEZVOUS_TIMEOUT,
+                )
+                .await?,
+                true,
+            ));
+        }
         let rendezvous_server = crate::get_rendezvous_server(1_000).await;
         log::info!("rendezvous server: {}", rendezvous_server);
 
diff --git a/src/common.rs b/src/common.rs
index a29273397..13599045e 100644
--- a/src/common.rs
+++ b/src/common.rs
@@ -342,7 +342,7 @@ async fn test_rendezvous_server_() {
         futs.push(tokio::spawn(async move {
             let tm = std::time::Instant::now();
             if socket_client::connect_tcp(
-                &crate::check_port(&host, RENDEZVOUS_PORT),
+                crate::check_port(&host, RENDEZVOUS_PORT),
                 Config::get_any_listen_addr(),
                 RENDEZVOUS_TIMEOUT,
             )
@@ -461,3 +461,10 @@ async fn _check_software_update() -> hbb_common::ResultType<()> {
     }
     Ok(())
 }
+
+pub fn is_ip(id: &str) -> bool {
+    hbb_common::regex::Regex::new(r"^\d+\.\d+\.\d+\.\d+$")
+        .unwrap()
+        .is_match(id)
+}
+
diff --git a/src/ipc.rs b/src/ipc.rs
index 841dd37ef..e197d804d 100644
--- a/src/ipc.rs
+++ b/src/ipc.rs
@@ -218,6 +218,8 @@ async fn handle(data: Data, stream: &mut Connection) {
                     value = Some(Config::get_salt());
                 } else if name == "rendezvous_server" {
                     value = Some(Config::get_rendezvous_server());
+                } else if name == "rendezvous_servers" {
+                    value = Some(Config::get_rendezvous_servers().join(","));
                 } else {
                     value = None;
                 }
@@ -225,6 +227,7 @@ async fn handle(data: Data, stream: &mut Connection) {
             }
             Some(value) => {
                 if name == "id" {
+                    Config::set_key_confirmed(false);
                     Config::set_id(&value);
                 } else if name == "password" {
                     Config::set_password(&value);
diff --git a/src/rendezvous_mediator.rs b/src/rendezvous_mediator.rs
index b994b4b91..d46344517 100644
--- a/src/rendezvous_mediator.rs
+++ b/src/rendezvous_mediator.rs
@@ -31,6 +31,7 @@ lazy_static::lazy_static! {
     static ref SOLVING_PK_MISMATCH: Arc<Mutex<String>> = Default::default();
 }
 static SHOULD_EXIT: AtomicBool = AtomicBool::new(false);
+const REG_INTERVAL: i64 = 12_000;
 
 #[derive(Clone)]
 pub struct RendezvousMediator {
@@ -54,6 +55,10 @@ impl RendezvousMediator {
             crate::common::test_nat_type();
             nat_tested = true;
         }
+        let server_cloned = server.clone();
+        tokio::spawn(async move {
+            allow_err!(direct_server(server_cloned).await);
+        });
         loop {
             Config::reset_online();
             if Config::get_option("stop-service").is_empty() {
@@ -111,7 +116,6 @@ impl RendezvousMediator {
         const TIMER_OUT: Duration = Duration::from_secs(1);
         let mut timer = interval(TIMER_OUT);
         let mut last_timer = SystemTime::UNIX_EPOCH;
-        const REG_INTERVAL: i64 = 12_000;
         const REG_TIMEOUT: i64 = 3_000;
         const MAX_FAILS1: i64 = 3;
         const MAX_FAILS2: i64 = 6;
@@ -246,7 +250,7 @@ impl RendezvousMediator {
                                     // old UDP socket not work any more after network recover
                                     if let Some(s) = socket_client::rebind_udp(any_addr).await? {
                                         socket = s;
-                                    };
+                                    }
                                     last_dns_check = now;
                                 }
                             } else if fails > MAX_FAILS1 {
@@ -457,3 +461,43 @@ impl RendezvousMediator {
         Ok(())
     }
 }
+
+async fn direct_server(server: ServerPtr) -> ResultType<()> {
+    let port = RENDEZVOUS_PORT + 2;
+    let addr = format!("0.0.0.0:{}", port);
+    let mut listener = None;
+    loop {
+        if !Config::get_option("direct-server").is_empty() && listener.is_none() {
+            listener = Some(hbb_common::tcp::new_listener(&addr, false).await?);
+            log::info!(
+                "Direct server listening on: {}",
+                &listener.as_ref().unwrap().local_addr()?
+            );
+        }
+        if let Some(l) = listener.as_mut() {
+            if let Ok(Ok((stream, addr))) = hbb_common::timeout(1000, l.accept()).await {
+                if Config::get_option("direct-server").is_empty() {
+                    continue;
+                }
+                log::info!("direct access from {}", addr);
+                let local_addr = stream.local_addr()?;
+                let server = server.clone();
+                tokio::spawn(async move {
+                    allow_err!(
+                        crate::server::create_tcp_connection(
+                            server,
+                            hbb_common::Stream::from(stream, local_addr),
+                            addr,
+                            false,
+                        )
+                        .await
+                    );
+                });
+            } else {
+                sleep(0.1).await;
+            }
+        } else {
+            sleep(1.).await;
+        }
+    }
+}
diff --git a/src/server/connection.rs b/src/server/connection.rs
index 482a9f654..75a9071f8 100644
--- a/src/server/connection.rs
+++ b/src/server/connection.rs
@@ -589,7 +589,7 @@ impl Connection {
                 }
                 _ => {}
             }
-            if lr.username != Config::get_id() {
+            if !crate::is_ip(&lr.username) && lr.username != Config::get_id() {
                 self.send_login_error("Offline").await;
             } else if lr.password.is_empty() {
                 self.try_start_cm(lr.my_id, lr.my_name, false).await;
diff --git a/src/ui/common.css b/src/ui/common.css
index 574fbb1a5..7e7eb6bf1 100644
--- a/src/ui/common.css
+++ b/src/ui/common.css
@@ -4,6 +4,7 @@ html {
     var(gray-bg): #eee;
     var(bg): white;
     var(border): #ccc;
+    var(hover-border): #999;
     var(text): #222;
     var(placeholder): #aaa;
     var(lighter-text): #888;
@@ -52,6 +53,10 @@ button.button:active, button.active {
     border-color: color(accent);
 }
 
+button.button:hover, button.outline:hover {
+  border-color: color(hover-border);
+}
+
 input[type=text], input[type=password], input[type=number] {
     width: *;
     font-size: 1.5em;
diff --git a/src/ui/index.tis b/src/ui/index.tis
index f8d8f4921..a69e5b014 100644
--- a/src/ui/index.tis
+++ b/src/ui/index.tis
@@ -62,6 +62,24 @@ function createNewConnect(id, type) {
     handler.new_remote(id, type);
 }
 
+var direct_server;
+class DirectServer: Reactor.Component {
+    function this() {
+        direct_server = this;
+    }
+
+    function render() {
+        var text = translate("Enable Direct IP Access");
+        var cls = handler.get_option("direct-server") == "Y" ? "selected" : "line-through";
+        return <li class={cls}><span>{svg_checkmark}</span>{text}</li>;
+    }
+    
+    function onClick() {
+        handler.set_option("direct-server", handler.get_option("direct-server") == "Y" ? "" : "Y");
+        this.update();
+    }
+}
+
 var myIdMenu;
 var audioInputMenu;
 class AudioInputs: Reactor.Component {
@@ -138,6 +156,7 @@ class MyIdMenu: Reactor.Component {
                 <li #socks5-server>{translate('Socks5 Proxy')}</li>
                 <div .separator />
                 <li #stop-service class={service_stopped ? "line-through" : "selected"}><span>{svg_checkmark}</span>{translate("Enable Service")}</li>
+                <DirectServer />
                 <div .separator />
                 <li #about>{translate('About')} {" "} {handler.get_app_name()}</li>
             </menu>
@@ -147,6 +166,7 @@ class MyIdMenu: Reactor.Component {
     event click $(svg#menu) (_, me) {
         audioInputMenu.update({ show: true });
         this.toggleMenuState();
+        if (direct_server) direct_server.update();
         var menu = $(menu#config-options);
         me.popup(menu);
     }