diff --git a/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-base/src/main/java/org/glyptodon/guacamole/auth/jdbc/user/ModeledUser.java b/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-base/src/main/java/org/glyptodon/guacamole/auth/jdbc/user/ModeledUser.java
index d35b9c07b..aba2d4f02 100644
--- a/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-base/src/main/java/org/glyptodon/guacamole/auth/jdbc/user/ModeledUser.java
+++ b/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-base/src/main/java/org/glyptodon/guacamole/auth/jdbc/user/ModeledUser.java
@@ -37,6 +37,7 @@ import org.glyptodon.guacamole.auth.jdbc.activeconnection.ActiveConnectionPermis
 import org.glyptodon.guacamole.auth.jdbc.permission.ConnectionGroupPermissionService;
 import org.glyptodon.guacamole.auth.jdbc.permission.ConnectionPermissionService;
 import org.glyptodon.guacamole.auth.jdbc.permission.UserPermissionService;
+import org.glyptodon.guacamole.form.BooleanField;
 import org.glyptodon.guacamole.form.Field;
 import org.glyptodon.guacamole.form.Form;
 import org.glyptodon.guacamole.net.auth.User;
@@ -68,9 +69,9 @@ public class ModeledUser extends ModeledDirectoryObject<UserModel> implements Us
      * All attributes related to restricting user accounts, within a logical
      * form.
      */
-    public static final Form ACCOUNT_RESTRICTIONS = new Form("restrictions", "Account Restrictions", Arrays.asList(
-        new Field(DISABLED_ATTRIBUTE_NAME, "Disabled", "true"),
-        new Field(EXPIRED_ATTRIBUTE_NAME, "Password expired", "true")
+    public static final Form ACCOUNT_RESTRICTIONS = new Form("restrictions", "Account Restrictions", Arrays.<Field>asList(
+        new BooleanField(DISABLED_ATTRIBUTE_NAME, "Disabled", "true"),
+        new BooleanField(EXPIRED_ATTRIBUTE_NAME, "Password expired", "true")
     ));
 
     /**
diff --git a/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-base/src/main/java/org/glyptodon/guacamole/auth/jdbc/user/UserService.java b/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-base/src/main/java/org/glyptodon/guacamole/auth/jdbc/user/UserService.java
index 7495cfa1e..3e1752eff 100644
--- a/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-base/src/main/java/org/glyptodon/guacamole/auth/jdbc/user/UserService.java
+++ b/extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-base/src/main/java/org/glyptodon/guacamole/auth/jdbc/user/UserService.java
@@ -39,6 +39,7 @@ import org.glyptodon.guacamole.auth.jdbc.permission.ObjectPermissionModel;
 import org.glyptodon.guacamole.auth.jdbc.permission.UserPermissionMapper;
 import org.glyptodon.guacamole.auth.jdbc.security.PasswordEncryptionService;
 import org.glyptodon.guacamole.form.Field;
+import org.glyptodon.guacamole.form.PasswordField;
 import org.glyptodon.guacamole.net.auth.User;
 import org.glyptodon.guacamole.net.auth.credentials.CredentialsInfo;
 import org.glyptodon.guacamole.net.auth.credentials.GuacamoleInsufficientCredentialsException;
@@ -81,7 +82,7 @@ public class UserService extends ModeledDirectoryObjectService<ModeledUser, User
      * The password field to provide the user when their password is expired
      * and must be changed.
      */
-    private static final Field NEW_PASSWORD = new Field(NEW_PASSWORD_PARAMETER, "New password", Field.Type.PASSWORD);
+    private static final Field NEW_PASSWORD = new PasswordField(NEW_PASSWORD_PARAMETER, "New password");
 
     /**
      * The name of the HTTP password confirmation parameter to expect if the
@@ -93,7 +94,7 @@ public class UserService extends ModeledDirectoryObjectService<ModeledUser, User
      * The password confirmation field to provide the user when their password
      * is expired and must be changed.
      */
-    private static final Field CONFIRM_NEW_PASSWORD = new Field(CONFIRM_NEW_PASSWORD_PARAMETER, "Confirm new password", Field.Type.PASSWORD);
+    private static final Field CONFIRM_NEW_PASSWORD = new PasswordField(CONFIRM_NEW_PASSWORD_PARAMETER, "Confirm new password");
 
     /**
      * Information describing the expected credentials if a user's password is
diff --git a/guacamole-ext/src/main/java/org/glyptodon/guacamole/form/BooleanField.java b/guacamole-ext/src/main/java/org/glyptodon/guacamole/form/BooleanField.java
new file mode 100644
index 000000000..64af6fc06
--- /dev/null
+++ b/guacamole-ext/src/main/java/org/glyptodon/guacamole/form/BooleanField.java
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2015 Glyptodon LLC
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+package org.glyptodon.guacamole.form;
+
+import java.util.Collections;
+
+/**
+ * Represents a field with strictly one possible value. It is assumed that the
+ * field may be blank, but that its sole non-blank value is the value provided.
+ * The provided value represents "true" while all other values, including
+ * having no associated value, represent "false".
+ *
+ * @author Michael Jumper
+ */
+public class BooleanField extends Field {
+
+    /**
+     * Creates a new BooleanField with the given name, title, and truth value.
+     * The truth value is the value that, when assigned to this field, means
+     * that this field is "true".
+     *
+     * @param name
+     *     The unique name to associate with this field.
+     *
+     * @param title
+     *     The human-readable title to associate with this field.
+     *
+     * @param truthValue
+     *     The value to consider "true" for this field. All other values will
+     *     be considered "false".
+     */
+    public BooleanField(String name, String title, String truthValue) {
+        super(name, title, Field.Type.BOOLEAN, Collections.singletonList(
+            new FieldOption(truthValue, truthValue)
+        ));
+    }
+
+}
diff --git a/guacamole-ext/src/main/java/org/glyptodon/guacamole/form/EnumField.java b/guacamole-ext/src/main/java/org/glyptodon/guacamole/form/EnumField.java
new file mode 100644
index 000000000..61e3b7323
--- /dev/null
+++ b/guacamole-ext/src/main/java/org/glyptodon/guacamole/form/EnumField.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2015 Glyptodon LLC
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+package org.glyptodon.guacamole.form;
+
+import java.util.Collection;
+
+/**
+ * Represents an arbitrary field with a finite, enumerated set of possible
+ * values.
+ *
+ * @author Michael Jumper
+ */
+public class EnumField extends Field {
+
+    /**
+     * Creates a new EnumField with the given name, title, and possible values.
+     *
+     * @param name
+     *     The unique name to associate with this field.
+     *
+     * @param title
+     *     The human-readable title to associate with this field.
+     *
+     * @param options
+     *     All possible legal options for this field.
+     */
+    public EnumField(String name, String title, Collection<FieldOption> options) {
+        super(name, title, Field.Type.ENUM, options);
+    }
+
+}
diff --git a/guacamole-ext/src/main/java/org/glyptodon/guacamole/form/Field.java b/guacamole-ext/src/main/java/org/glyptodon/guacamole/form/Field.java
index 91e4c6ffd..7da40ec75 100644
--- a/guacamole-ext/src/main/java/org/glyptodon/guacamole/form/Field.java
+++ b/guacamole-ext/src/main/java/org/glyptodon/guacamole/form/Field.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2013 Glyptodon LLC
+ * Copyright (C) 2015 Glyptodon LLC
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -27,7 +27,11 @@ import org.codehaus.jackson.map.annotate.JsonSerialize;
 
 /**
  * Represents an arbitrary field, such as an HTTP parameter, the parameter of a
- * remote desktop protocol, or an input field within a form.
+ * remote desktop protocol, or an input field within a form. Fields are generic
+ * and typed dynamically through a type string, with the semantics of the field
+ * defined by the type string. The behavior of each field type is defined
+ * either through the web application itself (see FormService.js) or through
+ * extensions.
  *
  * @author Michael Jumper
  */
@@ -94,13 +98,7 @@ public class Field {
     private String type;
 
     /**
-     * The value of this field, when checked. This is only applicable to
-     * BOOLEAN fields.
-     */
-    private String value;
-
-    /**
-     * A collection of all associated field options.
+     * A collection of all legal values of this field.
      */
     private Collection<FieldOption> options;
 
@@ -111,7 +109,7 @@ public class Field {
     }
 
     /**
-     * Creates a new Parameter with the given name, title, and type.
+     * Creates a new Field with the given name, title, and type.
      *
      * @param name
      *     The unique name to associate with this field.
@@ -123,13 +121,14 @@ public class Field {
      *     The type of this field.
      */
     public Field(String name, String title, String type) {
-        this.name    = name;
-        this.title   = title;
-        this.type    = type;
+        this.name  = name;
+        this.title = title;
+        this.type  = type;
     }
 
     /**
-     * Creates a new ENUM Parameter with the given name, title, and options.
+     * Creates a new Field with the given name, title, type, and possible
+     * values.
      *
      * @param name
      *     The unique name to associate with this field.
@@ -137,13 +136,17 @@ public class Field {
      * @param title
      *     The human-readable title to associate with this field.
      *
+     * @param type
+     *     The type of this field.
+     *
      * @param options
      *     A collection of all possible valid options for this field.
      */
-    public Field(String name, String title, Collection<FieldOption> options) {
+    public Field(String name, String title, String type,
+            Collection<FieldOption> options) {
         this.name    = name;
         this.title   = title;
-        this.type    = Type.ENUM;
+        this.type    = type;
         this.options = options;
     }
 
@@ -188,28 +191,6 @@ public class Field {
         this.title = title;
     }
 
-    /**
-     * Returns the value that should be assigned to this field if enabled. This
-     * is only applicable to BOOLEAN fields.
-     *
-     * @return
-     *     The value that should be assigned to this field if enabled.
-     */
-    public String getValue() {
-        return value;
-    }
-
-    /**
-     * Sets the value that should be assigned to this field if enabled. This is
-     * only applicable to BOOLEAN fields.
-     *
-     * @param value
-     *     The value that should be assigned to this field if enabled.
-     */
-    public void setValue(String value) {
-        this.value = value;
-    }
-
     /**
      * Returns the type of this field.
      *
@@ -232,8 +213,7 @@ public class Field {
 
     /**
      * Returns a mutable collection of field options. Changes to this
-     * collection directly affect the available options. This is only
-     * applicable to ENUM fields.
+     * collection directly affect the available options.
      *
      * @return
      *     A mutable collection of field options, or null if the field has no
@@ -244,8 +224,7 @@ public class Field {
     }
 
     /**
-     * Sets the options available as possible values of this field. This is
-     * only applicable to ENUM fields.
+     * Sets the options available as possible values of this field.
      *
      * @param options
      *     The options to associate with this field.
diff --git a/guacamole-ext/src/main/java/org/glyptodon/guacamole/form/MultilineField.java b/guacamole-ext/src/main/java/org/glyptodon/guacamole/form/MultilineField.java
new file mode 100644
index 000000000..f216a45f6
--- /dev/null
+++ b/guacamole-ext/src/main/java/org/glyptodon/guacamole/form/MultilineField.java
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2015 Glyptodon LLC
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+package org.glyptodon.guacamole.form;
+
+/**
+ * Represents a field which can contain multiple lines of text.
+ *
+ * @author Michael Jumper
+ */
+public class MultilineField extends Field {
+
+    /**
+     * Creates a new MultilineField with the given name and title.
+     *
+     * @param name
+     *     The unique name to associate with this field.
+     *
+     * @param title
+     *     The human-readable title to associate with this field.
+     */
+    public MultilineField(String name, String title) {
+        super(name, title, Field.Type.MULTILINE);
+    }
+
+}
diff --git a/guacamole-ext/src/main/java/org/glyptodon/guacamole/form/NumericField.java b/guacamole-ext/src/main/java/org/glyptodon/guacamole/form/NumericField.java
new file mode 100644
index 000000000..3b4b992c1
--- /dev/null
+++ b/guacamole-ext/src/main/java/org/glyptodon/guacamole/form/NumericField.java
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2015 Glyptodon LLC
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+package org.glyptodon.guacamole.form;
+
+/**
+ * Represents a field which may contain only integer values.
+ *
+ * @author Michael Jumper
+ */
+public class NumericField extends Field {
+
+    /**
+     * Creates a new NumericField with the given name and title.
+     *
+     * @param name
+     *     The unique name to associate with this field.
+     *
+     * @param title
+     *     The human-readable title to associate with this field.
+     */
+    public NumericField(String name, String title) {
+        super(name, title, Field.Type.NUMERIC);
+    }
+
+}
diff --git a/guacamole-ext/src/main/java/org/glyptodon/guacamole/form/PasswordField.java b/guacamole-ext/src/main/java/org/glyptodon/guacamole/form/PasswordField.java
new file mode 100644
index 000000000..e8197563a
--- /dev/null
+++ b/guacamole-ext/src/main/java/org/glyptodon/guacamole/form/PasswordField.java
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2015 Glyptodon LLC
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+package org.glyptodon.guacamole.form;
+
+/**
+ * Represents a field which contains sensitive text information related to
+ * authenticating a user.
+ *
+ * @author Michael Jumper
+ */
+public class PasswordField extends Field {
+
+    /**
+     * Creates a new PasswordField with the given name and title.
+     *
+     * @param name
+     *     The unique name to associate with this field.
+     *
+     * @param title
+     *     The human-readable title to associate with this field.
+     */
+    public PasswordField(String name, String title) {
+        super(name, title, Field.Type.PASSWORD);
+    }
+
+}
diff --git a/guacamole-ext/src/main/java/org/glyptodon/guacamole/form/TextField.java b/guacamole-ext/src/main/java/org/glyptodon/guacamole/form/TextField.java
new file mode 100644
index 000000000..60a6e9467
--- /dev/null
+++ b/guacamole-ext/src/main/java/org/glyptodon/guacamole/form/TextField.java
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2015 Glyptodon LLC
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+package org.glyptodon.guacamole.form;
+
+/**
+ * Represents a basic text field. The field may generally contain any data, but
+ * may not contain multiple lines.
+ *
+ * @author Michael Jumper
+ */
+public class TextField extends Field {
+
+    /**
+     * Creates a new TextField with the given name and title.
+     *
+     * @param name
+     *     The unique name to associate with this field.
+     *
+     * @param title
+     *     The human-readable title to associate with this field.
+     */
+    public TextField(String name, String title) {
+        super(name, title, Field.Type.TEXT);
+    }
+
+}
diff --git a/guacamole-ext/src/main/java/org/glyptodon/guacamole/form/UsernameField.java b/guacamole-ext/src/main/java/org/glyptodon/guacamole/form/UsernameField.java
new file mode 100644
index 000000000..60879ee28
--- /dev/null
+++ b/guacamole-ext/src/main/java/org/glyptodon/guacamole/form/UsernameField.java
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2015 Glyptodon LLC
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+package org.glyptodon.guacamole.form;
+
+/**
+ * Represents a text field which will contain the uniquely-identifying name of
+ * a user.
+ *
+ * @author Michael Jumper
+ */
+public class UsernameField extends Field {
+
+    /**
+     * Creates a new UsernameField with the given name and title.
+     *
+     * @param name
+     *     The unique name to associate with this field.
+     *
+     * @param title
+     *     The human-readable title to associate with this field.
+     */
+    public UsernameField(String name, String title) {
+        super(name, title, Field.Type.USERNAME);
+    }
+
+}
diff --git a/guacamole-ext/src/main/java/org/glyptodon/guacamole/net/auth/credentials/CredentialsInfo.java b/guacamole-ext/src/main/java/org/glyptodon/guacamole/net/auth/credentials/CredentialsInfo.java
index b3c7c1175..e693dbc79 100644
--- a/guacamole-ext/src/main/java/org/glyptodon/guacamole/net/auth/credentials/CredentialsInfo.java
+++ b/guacamole-ext/src/main/java/org/glyptodon/guacamole/net/auth/credentials/CredentialsInfo.java
@@ -26,6 +26,8 @@ import java.util.Arrays;
 import java.util.Collection;
 import java.util.Collections;
 import org.glyptodon.guacamole.form.Field;
+import org.glyptodon.guacamole.form.PasswordField;
+import org.glyptodon.guacamole.form.UsernameField;
 
 /**
  * Information which describes a set of valid credentials.
@@ -71,13 +73,13 @@ public class CredentialsInfo {
      * A field describing the username HTTP parameter expected by Guacamole
      * during login, if usernames are being used.
      */
-    public static final Field USERNAME = new Field("username", "username", Field.Type.USERNAME);
+    public static final Field USERNAME = new UsernameField("username", "username");
 
     /**
      * A field describing the password HTTP parameter expected by Guacamole
      * during login, if passwords are being used.
      */
-    public static final Field PASSWORD = new Field("password", "password", Field.Type.PASSWORD);
+    public static final Field PASSWORD = new PasswordField("password", "password");
 
     /**
      * CredentialsInfo object which describes standard username/password
diff --git a/guacamole-ext/src/main/resources/org/glyptodon/guacamole/protocols/rdp.json b/guacamole-ext/src/main/resources/org/glyptodon/guacamole/protocols/rdp.json
index 0480c7528..98f64ab94 100644
--- a/guacamole-ext/src/main/resources/org/glyptodon/guacamole/protocols/rdp.json
+++ b/guacamole-ext/src/main/resources/org/glyptodon/guacamole/protocols/rdp.json
@@ -67,16 +67,22 @@
                     ]
                 },
                 {
-                    "name"  : "disable-auth",
-                    "title" : "Disable authentication",
-                    "type"  : "BOOLEAN",
-                    "value" : "true"
+                    "name"    : "disable-auth",
+                    "title"   : "Disable authentication",
+                    "type"    : "BOOLEAN",
+                    "options" : [{
+                        "value" : "true",
+                        "title" : "true"
+                    }]
                 },
                 {
-                    "name"  : "ignore-cert",
-                    "title" : "Ignore server certificate",
-                    "type"  : "BOOLEAN",
-                    "value" : "true"
+                    "name"    : "ignore-cert",
+                    "title"   : "Ignore server certificate",
+                    "type"    : "BOOLEAN",
+                    "options" : [{
+                        "value" : "true",
+                        "title" : "true"
+                    }]
                 }
             ]
         },
@@ -131,10 +137,13 @@
                     ]
                 },
                 {
-                    "name"  : "console",
-                    "title" : "Administrator console",
-                    "type"  : "BOOLEAN",
-                    "value" : "true"
+                    "name"    : "console",
+                    "title"   : "Administrator console",
+                    "type"    : "BOOLEAN",
+                    "options" : [{
+                        "value" : "true",
+                        "title" : "true"
+                    }]
                 }
             ]
         },
@@ -193,28 +202,40 @@
             "name"  : "device-redirection",
             "fields" : [
                 {
-                    "name"  : "console-audio",
-                    "title" : "Support audio in console",
-                    "type"  : "BOOLEAN",
-                    "value" : "true"
+                    "name"    : "console-audio",
+                    "title"   : "Support audio in console",
+                    "type"    : "BOOLEAN",
+                    "options" : [{
+                        "value" : "true",
+                        "title" : "true"
+                    }]
                 },
                 {
-                    "name"  : "disable-audio",
-                    "title" : "Disable audio",
-                    "type"  : "BOOLEAN",
-                    "value" : "true"
+                    "name"    : "disable-audio",
+                    "title"   : "Disable audio",
+                    "type"    : "BOOLEAN",
+                    "options" : [{
+                        "value" : "true",
+                        "title" : "true"
+                    }]
                 },
                 {
-                    "name"  : "enable-printing",
-                    "title" : "Enable printing",
-                    "type"  : "BOOLEAN",
-                    "value" : "true"
+                    "name"    : "enable-printing",
+                    "title"   : "Enable printing",
+                    "type"    : "BOOLEAN",
+                    "options" : [{
+                        "value" : "true",
+                        "title" : "true"
+                    }]
                 },
                 {
-                    "name"  : "enable-drive",
-                    "title" : "Enable drive",
-                    "type"  : "BOOLEAN",
-                    "value" : "true"
+                    "name"    : "enable-drive",
+                    "title"   : "Enable drive",
+                    "type"    : "BOOLEAN",
+                    "options" : [{
+                        "value" : "true",
+                        "title" : "true"
+                    }]
                 },
                 {
                     "name"  : "drive-path",
diff --git a/guacamole-ext/src/main/resources/org/glyptodon/guacamole/protocols/ssh.json b/guacamole-ext/src/main/resources/org/glyptodon/guacamole/protocols/ssh.json
index fa692975b..4efbfaf44 100644
--- a/guacamole-ext/src/main/resources/org/glyptodon/guacamole/protocols/ssh.json
+++ b/guacamole-ext/src/main/resources/org/glyptodon/guacamole/protocols/ssh.json
@@ -131,10 +131,13 @@
             "name"  : "sftp",
             "fields" : [
                 {
-                    "name"  : "enable-sftp",
-                    "title" : "Enable SFTP",
-                    "type"  : "BOOLEAN",
-                    "value" : "true"
+                    "name"    : "enable-sftp",
+                    "title"   : "Enable SFTP",
+                    "type"    : "BOOLEAN",
+                    "options" : [{
+                        "value" : "true",
+                        "title" : "true"
+                    }]
                 }
             ]
         }
diff --git a/guacamole-ext/src/main/resources/org/glyptodon/guacamole/protocols/vnc.json b/guacamole-ext/src/main/resources/org/glyptodon/guacamole/protocols/vnc.json
index c7d51d034..d91cdb2e9 100644
--- a/guacamole-ext/src/main/resources/org/glyptodon/guacamole/protocols/vnc.json
+++ b/guacamole-ext/src/main/resources/org/glyptodon/guacamole/protocols/vnc.json
@@ -37,16 +37,22 @@
             "name"  : "display",
             "fields" : [
                 {
-                    "name"  : "read-only",
-                    "title" : "Read-only",
-                    "type"  : "BOOLEAN",
-                    "value" : "true"
+                    "name"    : "read-only",
+                    "title"   : "Read-only",
+                    "type"    : "BOOLEAN",
+                    "options" : [{
+                        "value" : "true",
+                        "title" : "true"
+                    }]
                 },
                 {
-                    "name"  : "swap-red-blue",
-                    "title" : "Swap red/blue components",
-                    "type"  : "BOOLEAN",
-                    "value" : "true"
+                    "name"    : "swap-red-blue",
+                    "title"   : "Swap red/blue components",
+                    "type"    : "BOOLEAN",
+                    "options" : [{
+                        "value" : "true",
+                        "title" : "true"
+                    }]
                 },
                 {
                     "name"  : "cursor",
@@ -119,10 +125,13 @@
             "name"  : "audio",
             "fields" : [
                 {
-                    "name"  : "enable-audio",
-                    "title" : "Enable audio",
-                    "type"  : "BOOLEAN",
-                    "value" : "true"
+                    "name"    : "enable-audio",
+                    "title"   : "Enable audio",
+                    "type"    : "BOOLEAN",
+                    "options" : [{
+                        "value" : "true",
+                        "title" : "true"
+                    }]
                 },
                 {
                     "name"  : "audio-servername",
diff --git a/guacamole/src/main/webapp/app/form/controllers/checkboxFieldController.js b/guacamole/src/main/webapp/app/form/controllers/checkboxFieldController.js
index eb15d37a5..830ef0d23 100644
--- a/guacamole/src/main/webapp/app/form/controllers/checkboxFieldController.js
+++ b/guacamole/src/main/webapp/app/form/controllers/checkboxFieldController.js
@@ -29,12 +29,12 @@ angular.module('form').controller('checkboxFieldController', ['$scope',
 
     // Update typed value when model is changed
     $scope.$watch('model', function modelChanged(model) {
-        $scope.typedValue = (model === $scope.field.value);
+        $scope.typedValue = (model === $scope.field.options[0].value);
     });
 
     // Update string value in model when typed value is changed
     $scope.$watch('typedValue', function typedValueChanged(typedValue) {
-        $scope.model = (typedValue ? $scope.field.value : '');
+        $scope.model = (typedValue ? $scope.field.options[0].value : '');
     });
 
 }]);
diff --git a/guacamole/src/main/webapp/app/rest/types/Field.js b/guacamole/src/main/webapp/app/rest/types/Field.js
index 66b3aea71..d1e2b0a85 100644
--- a/guacamole/src/main/webapp/app/rest/types/Field.js
+++ b/guacamole/src/main/webapp/app/rest/types/Field.js
@@ -64,16 +64,7 @@ angular.module('rest').factory('Field', [function defineField() {
         this.type = template.type || Field.Type.TEXT;
 
         /**
-         * The value to set the parameter to, in the case of a BOOLEAN
-         * parameter, to enable that parameter's effect.
-         *
-         * @type String
-         */
-        this.value = template.value;
-
-        /**
-         * All possible legal values for this parameter. This property is only
-         * applicable to ENUM type parameters.
+         * All possible legal values for this parameter.
          *
          * @type FieldOption[]
          */
@@ -123,7 +114,9 @@ angular.module('rest').factory('Field', [function defineField() {
         /**
          * The type string associated with parameters that may contain only a
          * single possible value, where that value enables the parameter's
-         * effect.
+         * effect. It is assumed that each BOOLEAN field will provide exactly
+         * one possible value (option), which will be the value if that field
+         * is true.
          * 
          * @type String
          */