diff --git a/CHANGELOG.md b/CHANGELOG.md
index 24ef8c5..3a1a948 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,6 +18,7 @@ Procedure when bumping the version number:
 - Config file
 - `ephemeral` config option
 - `data_dir` config option
+- `euph.rooms.<name>.password` config option
 
 ## v0.3.0 - 2022-08-22
 
diff --git a/src/config.rs b/src/config.rs
index 2513838..f984e14 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -1,3 +1,4 @@
+use std::collections::HashMap;
 use std::fs;
 use std::path::{Path, PathBuf};
 
@@ -5,11 +6,22 @@ use serde::Deserialize;
 
 use crate::macros::ok_or_return;
 
+#[derive(Debug, Clone, Default, Deserialize)]
+pub struct EuphRoom {
+    pub password: Option<String>,
+}
+
+#[derive(Debug, Default, Deserialize)]
+pub struct Euph {
+    pub rooms: HashMap<String, EuphRoom>,
+}
+
 #[derive(Debug, Default, Deserialize)]
 pub struct Config {
     pub data_dir: Option<PathBuf>,
     #[serde(default)]
     pub ephemeral: bool,
+    pub euph: Euph,
 }
 
 impl Config {
@@ -23,4 +35,8 @@ impl Config {
             }
         }
     }
+
+    pub fn euph_room(&self, name: &str) -> EuphRoom {
+        self.euph.rooms.get(name).cloned().unwrap_or_default()
+    }
 }
diff --git a/src/euph/room.rs b/src/euph/room.rs
index 324196f..cef9321 100644
--- a/src/euph/room.rs
+++ b/src/euph/room.rs
@@ -58,6 +58,7 @@ enum Event {
 #[derive(Debug)]
 struct State {
     name: String,
+    password: Option<String>,
     vault: EuphVault,
 
     conn_tx: Option<ConnTx>,
@@ -231,7 +232,14 @@ impl State {
     async fn on_packet(&mut self, packet: &ParsedPacket) -> anyhow::Result<()> {
         let data = ok_or_return!(&packet.content, Ok(()));
         match data {
-            Data::BounceEvent(_) => {}
+            Data::BounceEvent(_) => {
+                if let Some(password) = &self.password {
+                    // Try to authenticate with the configured password, but no
+                    // promises if it doesn't work. In particular, we only ever
+                    // try this password once.
+                    self.on_auth(password.clone());
+                }
+            }
             Data::DisconnectEvent(d) => {
                 warn!("e&{}: disconnected for reason {:?}", self.name, d.reason);
             }
@@ -411,7 +419,10 @@ pub struct Room {
 }
 
 impl Room {
-    pub fn new(vault: EuphVault) -> (Self, mpsc::UnboundedReceiver<EuphRoomEvent>) {
+    pub fn new(
+        vault: EuphVault,
+        password: Option<String>,
+    ) -> (Self, mpsc::UnboundedReceiver<EuphRoomEvent>) {
         let (canary_tx, canary_rx) = oneshot::channel();
         let (event_tx, event_rx) = mpsc::unbounded_channel();
         let (euph_room_event_tx, euph_room_event_rx) = mpsc::unbounded_channel();
@@ -419,6 +430,7 @@ impl Room {
 
         let state = State {
             name: vault.room().to_string(),
+            password,
             vault,
             conn_tx: None,
             last_msg_id: None,
diff --git a/src/main.rs b/src/main.rs
index eb6c135..387d30d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -110,19 +110,21 @@ async fn main() -> anyhow::Result<()> {
     let mut config = Config::load(&config_path);
     set_data_dir(&mut config, args.data_dir);
     set_ephemeral(&mut config, args.ephemeral);
+    let config = Box::leak(Box::new(config));
 
     let vault = if config.ephemeral {
         vault::launch_in_memory()?
     } else {
         let data_dir = config
             .data_dir
+            .clone()
             .unwrap_or_else(|| dirs.data_dir().to_path_buf());
         println!("Data dir:    {}", data_dir.to_string_lossy());
         vault::launch(&data_dir.join("vault.db"))?
     };
 
     match args.command.unwrap_or_default() {
-        Command::Run => run(&vault, args.measure_widths).await?,
+        Command::Run => run(config, &vault, args.measure_widths).await?,
         Command::Export(args) => export::export(&vault, args).await?,
         Command::Gc => {
             println!("Cleaning up and compacting vault");
@@ -141,7 +143,7 @@ async fn main() -> anyhow::Result<()> {
     Ok(())
 }
 
-async fn run(vault: &Vault, measure_widths: bool) -> anyhow::Result<()> {
+async fn run(config: &'static Config, vault: &Vault, measure_widths: bool) -> anyhow::Result<()> {
     let (logger, logger_rx) = Logger::init(log::Level::Debug);
     info!(
         "Welcome to {} {}",
@@ -151,7 +153,7 @@ async fn run(vault: &Vault, measure_widths: bool) -> anyhow::Result<()> {
 
     let mut terminal = Terminal::new()?;
     terminal.set_measuring(measure_widths);
-    Ui::run(&mut terminal, vault.clone(), logger, logger_rx).await?;
+    Ui::run(config, &mut terminal, vault.clone(), logger, logger_rx).await?;
     drop(terminal); // So the vault can print again
 
     Ok(())
diff --git a/src/ui.rs b/src/ui.rs
index cc2035d..ddca402 100644
--- a/src/ui.rs
+++ b/src/ui.rs
@@ -17,6 +17,7 @@ use tokio::sync::mpsc::{self, UnboundedReceiver, UnboundedSender};
 use tokio::task;
 use toss::terminal::Terminal;
 
+use crate::config::Config;
 use crate::euph::EuphRoomEvent;
 use crate::logger::{LogMsg, Logger};
 use crate::macros::{ok_or_return, some_or_return};
@@ -66,6 +67,7 @@ impl Ui {
     const POLL_DURATION: Duration = Duration::from_millis(100);
 
     pub async fn run(
+        config: &'static Config,
         terminal: &mut Terminal,
         vault: Vault,
         logger: Logger,
@@ -93,7 +95,7 @@ impl Ui {
         let mut ui = Self {
             event_tx: event_tx.clone(),
             mode: Mode::Main,
-            rooms: Rooms::new(vault, event_tx.clone()),
+            rooms: Rooms::new(config, vault, event_tx.clone()),
             log_chat: ChatState::new(logger),
             key_bindings_list: None,
         };
diff --git a/src/ui/euph/room.rs b/src/ui/euph/room.rs
index 78baa80..2700b1d 100644
--- a/src/ui/euph/room.rs
+++ b/src/ui/euph/room.rs
@@ -11,6 +11,7 @@ use tokio::sync::{mpsc, oneshot};
 use toss::styled::Styled;
 use toss::terminal::Terminal;
 
+use crate::config;
 use crate::euph::{self, EuphRoomEvent};
 use crate::macros::{ok_or_return, some_or_return};
 use crate::store::MsgStore;
@@ -47,6 +48,8 @@ pub enum RoomStatus {
 }
 
 pub struct EuphRoom {
+    config: config::EuphRoom,
+
     ui_event_tx: mpsc::UnboundedSender<UiEvent>,
 
     vault: EuphVault,
@@ -62,8 +65,13 @@ pub struct EuphRoom {
 }
 
 impl EuphRoom {
-    pub fn new(vault: EuphVault, ui_event_tx: mpsc::UnboundedSender<UiEvent>) -> Self {
+    pub fn new(
+        config: config::EuphRoom,
+        vault: EuphVault,
+        ui_event_tx: mpsc::UnboundedSender<UiEvent>,
+    ) -> Self {
         Self {
+            config,
             ui_event_tx,
             vault: vault.clone(),
             room: None,
@@ -94,7 +102,7 @@ impl EuphRoom {
         if self.room.is_none() {
             let store = self.chat.store().clone();
             let name = store.room().to_string();
-            let (room, euph_room_event_rx) = euph::Room::new(store);
+            let (room, euph_room_event_rx) = euph::Room::new(store, self.config.password.clone());
 
             self.room = Some(room);
 
diff --git a/src/ui/rooms.rs b/src/ui/rooms.rs
index 59d21bb..8d1d4ee 100644
--- a/src/ui/rooms.rs
+++ b/src/ui/rooms.rs
@@ -11,6 +11,7 @@ use tokio::sync::mpsc;
 use toss::styled::Styled;
 use toss::terminal::Terminal;
 
+use crate::config::Config;
 use crate::euph::EuphRoomEvent;
 use crate::vault::Vault;
 
@@ -33,6 +34,8 @@ enum State {
 }
 
 pub struct Rooms {
+    config: &'static Config,
+
     vault: Vault,
     ui_event_tx: mpsc::UnboundedSender<UiEvent>,
 
@@ -43,8 +46,13 @@ pub struct Rooms {
 }
 
 impl Rooms {
-    pub fn new(vault: Vault, ui_event_tx: mpsc::UnboundedSender<UiEvent>) -> Self {
+    pub fn new(
+        config: &'static Config,
+        vault: Vault,
+        ui_event_tx: mpsc::UnboundedSender<UiEvent>,
+    ) -> Self {
         Self {
+            config,
             vault,
             ui_event_tx,
             state: State::ShowList,
@@ -54,9 +62,13 @@ impl Rooms {
     }
 
     fn get_or_insert_room(&mut self, name: String) -> &mut EuphRoom {
-        self.euph_rooms
-            .entry(name.clone())
-            .or_insert_with(|| EuphRoom::new(self.vault.euph(name), self.ui_event_tx.clone()))
+        self.euph_rooms.entry(name.clone()).or_insert_with(|| {
+            EuphRoom::new(
+                self.config.euph_room(&name),
+                self.vault.euph(name),
+                self.ui_event_tx.clone(),
+            )
+        })
     }
 
     /// Remove rooms that are not running any more and can't be found in the db.