diff --git a/conntrackt/forms.py b/conntrackt/forms.py
--- a/conntrackt/forms.py
+++ b/conntrackt/forms.py
@@ -22,11 +22,37 @@ class EntityForm(ModelForm):
 
         super(EntityForm, self).__init__(*args, **kwargs)
 
-        # Update the widgets to be wider, and set-up placeholder values for text
-        # boxes.
-        self.fields["name"].widget.attrs["class"] = "span6"
+        # Update the widgets to be wider.
+        for field_name, field in self.fields.iteritems():
+            field.widget.attrs["class"] = "span6"
+
+        # Set-up some placeholders.
         self.fields["name"].widget.attrs["placeholder"] = "Entity name"
-        self.fields["description"].widget.attrs["class"] = "span6"
-        self.fields["description"].widget.attrs["placeholder"] = "Description for new entity."
-        self.fields["project"].widget.attrs["class"] = "span6"
-        self.fields["location"].widget.attrs["class"] = "span6"
+        self.fields["description"].widget.attrs["placeholder"] = "Entity description"
+
+
+class InterfaceForm(ModelForm):
+    """
+    Implements a custom model form for interfaces with some styling changes.
+    """
+
+    class Meta:
+        model = Interface
+
+    def __init__(self, *args, **kwargs):
+        """
+        Initialises the form instance. Sets-up some bootstrap CSS classes for
+        widgets.
+        """
+
+        super(InterfaceForm, self).__init__(*args, **kwargs)
+
+        # Update the widgets to be wider.
+        for field_name, field in self.fields.iteritems():
+            field.widget.attrs["class"] = "span6"
+
+        # Set-up some placeholders.
+        self.fields["name"].widget.attrs["placeholder"] = "Interface name"
+        self.fields["description"].widget.attrs["placeholder"] = "Interface description"
+        self.fields["address"].widget.attrs["placeholder"] = "IP address of interface"
+        self.fields["netmask"].widget.attrs["placeholder"] = "IP address netmask"