diff --git a/src/profile_dialog.cpp b/src/profile_dialog.cpp
index 509c9d7..465adf2 100644
--- a/src/profile_dialog.cpp
+++ b/src/profile_dialog.cpp
@@ -2,7 +2,10 @@
 
 #include <QComboBox>
 #include <QDialogButtonBox>
+#include <QFileDialog>
 #include <QFormLayout>
+#include <QHBoxLayout>
+#include <QLabel>
 #include <QLineEdit>
 #include <QMessageBox>
 #include <QPushButton>
@@ -30,9 +33,12 @@ ProfileDialog::ProfileDialog(QWidget* parent)
       m_portInput(new QSpinBox(this)),
       m_usernameInput(new QLineEdit(this)),
       m_protocolInput(new QComboBox(this)),
-      m_authModeInput(new QComboBox(this))
+      m_authModeInput(new QComboBox(this)),
+      m_privateKeyPathInput(new QLineEdit(this)),
+      m_browsePrivateKeyButton(new QPushButton(QStringLiteral("Browse"), this)),
+      m_knownHostsPolicyInput(new QComboBox(this))
 {
-    resize(420, 260);
+    resize(520, 340);
 
     auto* layout = new QVBoxLayout(this);
     auto* form = new QFormLayout();
@@ -45,27 +51,66 @@ ProfileDialog::ProfileDialog(QWidget* parent)
 
     m_protocolInput->addItems({QStringLiteral("SSH"), QStringLiteral("RDP"), QStringLiteral("VNC")});
     m_authModeInput->addItems({QStringLiteral("Password"), QStringLiteral("Private Key")});
+    m_knownHostsPolicyInput->addItems(
+        {QStringLiteral("Strict"), QStringLiteral("Accept New"), QStringLiteral("Ignore")});
+
+    m_privateKeyPathInput->setPlaceholderText(QStringLiteral("/home/user/.ssh/id_ed25519"));
+
+    auto* privateKeyRow = new QWidget(this);
+    auto* privateKeyLayout = new QHBoxLayout(privateKeyRow);
+    privateKeyLayout->setContentsMargins(0, 0, 0, 0);
+    privateKeyLayout->addWidget(m_privateKeyPathInput, 1);
+    privateKeyLayout->addWidget(m_browsePrivateKeyButton);
+
+    connect(m_browsePrivateKeyButton,
+            &QPushButton::clicked,
+            this,
+            [this]() {
+                const QString selected = QFileDialog::getOpenFileName(this,
+                                                                      QStringLiteral("Select Private Key"),
+                                                                      QString(),
+                                                                      QStringLiteral("All Files (*)"));
+                if (!selected.isEmpty()) {
+                    m_privateKeyPathInput->setText(selected);
+                }
+            });
 
     connect(m_protocolInput,
             &QComboBox::currentTextChanged,
             this,
             [this](const QString& protocol) {
                 m_portInput->setValue(standardPortForProtocol(protocol));
+                refreshAuthFields();
             });
 
+    connect(m_authModeInput,
+            &QComboBox::currentTextChanged,
+            this,
+            [this](const QString&) { refreshAuthFields(); });
+
     form->addRow(QStringLiteral("Name"), m_nameInput);
     form->addRow(QStringLiteral("Host"), m_hostInput);
     form->addRow(QStringLiteral("Port"), m_portInput);
     form->addRow(QStringLiteral("Username"), m_usernameInput);
     form->addRow(QStringLiteral("Protocol"), m_protocolInput);
     form->addRow(QStringLiteral("Auth Mode"), m_authModeInput);
+    form->addRow(QStringLiteral("Private Key"), privateKeyRow);
+    form->addRow(QStringLiteral("Known Hosts"), m_knownHostsPolicyInput);
+
+    auto* note = new QLabel(
+        QStringLiteral("Passwords are requested at connect time and are not stored."),
+        this);
+    note->setWordWrap(true);
 
     auto* buttons = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel, this);
     connect(buttons, &QDialogButtonBox::accepted, this, &QDialog::accept);
     connect(buttons, &QDialogButtonBox::rejected, this, &QDialog::reject);
 
     layout->addLayout(form);
+    layout->addWidget(note);
     layout->addWidget(buttons);
+
+    refreshAuthFields();
 }
 
 void ProfileDialog::setDialogTitle(const QString& title)
@@ -79,6 +124,7 @@ void ProfileDialog::setProfile(const Profile& profile)
     m_hostInput->setText(profile.host);
     m_portInput->setValue(profile.port > 0 ? profile.port : 22);
     m_usernameInput->setText(profile.username);
+    m_privateKeyPathInput->setText(profile.privateKeyPath);
 
     const int protocolIndex = m_protocolInput->findText(profile.protocol);
     {
@@ -89,6 +135,11 @@ void ProfileDialog::setProfile(const Profile& profile)
 
     const int authModeIndex = m_authModeInput->findText(profile.authMode);
     m_authModeInput->setCurrentIndex(authModeIndex >= 0 ? authModeIndex : 0);
+
+    const int knownHostsIndex = m_knownHostsPolicyInput->findText(profile.knownHostsPolicy);
+    m_knownHostsPolicyInput->setCurrentIndex(knownHostsIndex >= 0 ? knownHostsIndex : 0);
+
+    refreshAuthFields();
 }
 
 Profile ProfileDialog::profile() const
@@ -101,6 +152,8 @@ Profile ProfileDialog::profile() const
     profile.username = m_usernameInput->text().trimmed();
     profile.protocol = m_protocolInput->currentText();
     profile.authMode = m_authModeInput->currentText();
+    profile.privateKeyPath = m_privateKeyPathInput->text().trimmed();
+    profile.knownHostsPolicy = m_knownHostsPolicyInput->currentText();
     return profile;
 }
 
@@ -120,5 +173,24 @@ void ProfileDialog::accept()
         return;
     }
 
+    if (m_protocolInput->currentText() == QStringLiteral("SSH")
+        && m_usernameInput->text().trimmed().isEmpty()) {
+        QMessageBox::warning(this,
+                             QStringLiteral("Validation Error"),
+                             QStringLiteral("Username is required for SSH profiles."));
+        return;
+    }
+
     QDialog::accept();
 }
+
+void ProfileDialog::refreshAuthFields()
+{
+    const bool isSsh = m_protocolInput->currentText() == QStringLiteral("SSH");
+    const bool isPrivateKey = m_authModeInput->currentText() == QStringLiteral("Private Key");
+
+    m_authModeInput->setEnabled(isSsh);
+    m_privateKeyPathInput->setEnabled(isSsh && isPrivateKey);
+    m_browsePrivateKeyButton->setEnabled(isSsh && isPrivateKey);
+    m_knownHostsPolicyInput->setEnabled(isSsh);
+}
diff --git a/src/profile_dialog.h b/src/profile_dialog.h
index c7830ee..1496ace 100644
--- a/src/profile_dialog.h
+++ b/src/profile_dialog.h
@@ -7,6 +7,7 @@
 
 class QComboBox;
 class QLineEdit;
+class QPushButton;
 class QSpinBox;
 
 class ProfileDialog : public QDialog
@@ -30,6 +31,11 @@ private:
     QLineEdit* m_usernameInput;
     QComboBox* m_protocolInput;
     QComboBox* m_authModeInput;
+    QLineEdit* m_privateKeyPathInput;
+    QPushButton* m_browsePrivateKeyButton;
+    QComboBox* m_knownHostsPolicyInput;
+
+    void refreshAuthFields();
 };
 
 #endif
diff --git a/src/profiles_window.cpp b/src/profiles_window.cpp
index 5861c1a..a7bf4ef 100644
--- a/src/profiles_window.cpp
+++ b/src/profiles_window.cpp
@@ -119,12 +119,13 @@ void ProfilesWindow::loadProfiles(const QString& query)
     for (const Profile& profile : profiles) {
         auto* item = new QListWidgetItem(formatProfileListItem(profile), m_profilesList);
         item->setData(Qt::UserRole, QVariant::fromValue(profile.id));
-        item->setToolTip(QStringLiteral("%1://%2@%3:%4\nAuth: %5")
+        item->setToolTip(QStringLiteral("%1://%2@%3:%4\nAuth: %5\nKnown Hosts: %6")
                              .arg(profile.protocol,
                                   profile.username.isEmpty() ? QStringLiteral("<none>") : profile.username,
                                   profile.host,
                                   QString::number(profile.port),
-                                  profile.authMode));
+                                  profile.authMode,
+                                  profile.knownHostsPolicy));
         m_profileCache.insert_or_assign(profile.id, profile);
     }
 }