diff --git a/site-cookbooks/kosmos-parity/recipes/node_testnet.rb b/site-cookbooks/kosmos-parity/recipes/node_testnet.rb
index 18cebf7..145ab53 100644
--- a/site-cookbooks/kosmos-parity/recipes/node_testnet.rb
+++ b/site-cookbooks/kosmos-parity/recipes/node_testnet.rb
@@ -7,25 +7,46 @@
 # All rights reserved - Do Not Redistribute
 #
 
+rpc_proxy_port = 8546
+rpc_port       = 18546
+
 credentials = Chef::EncryptedDataBagItem.load('credentials', 'parity')
 
 parity_node "testnet" do
   password credentials["testnet_password"]
   config parity: {
-           chain: "ropsten",
+           chain: "testnet",
            no_download: true, # Don't Download Updates
          },
          network: {
            port: 30304,
+           warp: true,
          },
          rpc: {
-           port: 8546,
+           port: rpc_port,
+           cors: "*",
+           apis: ["safe"],
+           hosts: ["all"],
          },
          dapps: {
-           port: 8091,
+           disable: true,
          },
          ui: {
-           port: 8181,
+           disable: true,
+         },
+         websockets: {
+           disable: true,
          }
+  rpc_proxy_port rpc_proxy_port
 end
 
+# The firewall_rule doesn't appear to work inside a resource, that's why we're
+# doing it here
+unless node.chef_environment == "development"
+  include_recipe 'firewall'
+  firewall_rule "parity_testnet" do
+    port     rpc_proxy_port
+    protocol :tcp
+    command  :allow
+  end
+end