diff --git a/elements/puppet-stack-config/puppet-stack-config.yaml.template b/elements/puppet-stack-config/puppet-stack-config.yaml.template
index 60bdd38a3..3b6780150 100644
--- a/elements/puppet-stack-config/puppet-stack-config.yaml.template
+++ b/elements/puppet-stack-config/puppet-stack-config.yaml.template
@@ -899,6 +899,19 @@ nova::notify_on_state_change: 'vm_state'
 
 # Firewall
 tripleo::firewall::manage_firewall: true
+# Docker switches FORWARD to DROP by default which causes issues on the
+# undercloud. We are already included a REJECT rule in so switch these back
+# to ACCEPT.
+# https://bugs.launchpad.net/tripleo/+bug/1750194
+tripleo::firewall::firewall_chains:
+  'FORWARD:filter:IPv4':
+     ensure: present
+     policy: accept
+     purge: false
+  'FORWARD:filter:IPv6':
+     ensure: present
+     policy: accept
+     purge: false
 tripleo::firewall::firewall_rules:
   '105 ntp':
     dport: 123