diff --git a/configs/delaware/delaware-mdf-4507.cfg b/configs/delaware/delaware-mdf-4507.cfg
index 1c72749..c0ee681 100644
--- a/configs/delaware/delaware-mdf-4507.cfg
+++ b/configs/delaware/delaware-mdf-4507.cfg
@@ -1,8 +1,9 @@
 Building configuration...
 
-Current configuration : 36756 bytes
+Current configuration : 37672 bytes
 !
-! Last configuration change at 05:56:13 EDT Mon Oct 20 2025
+! Last configuration change at 16:13:28 EDT Mon Mar 9 2026 by estein66.admin
+! NVRAM config last updated at 16:13:32 EDT Mon Mar 9 2026 by estein66.admin
 !
 version 15.2
 no service pad
@@ -129,6 +130,16 @@ archive
  path bootflash:
  maximum 5
 file privilege 10
+object-group network day-enterprise-servers 
+ description day-enterprise-servers
+ host 10.1.230.11
+ host 10.1.40.108
+!
+object-group network dns-servers 
+ description Internal-DNS-Servers
+ host 10.1.40.10
+ host 10.1.48.11
+!
 object-group network netadmin-hosts 
  description SCSD Network Administrators Hosts
 !
@@ -138,6 +149,10 @@ object-group network netadmins-hosts
  host 10.1.6.126
  host 10.1.6.32
 !
+object-group network ntp-servers 
+ host 10.1.40.154
+ host 10.1.48.103
+!
 !
 spanning-tree mode rapid-pvst
 spanning-tree loopguard default
@@ -1120,6 +1135,7 @@ interface Vlan107
 !
 interface Vlan230
  ip address 10.22.230.1 255.255.255.224
+ ip access-group hvac in
 !
 interface Vlan503
  description to Ring #3 CCF Service #S200281
@@ -1223,6 +1239,16 @@ ip access-list extended AutoQos-4.0-ACL-Transactional-Data
  permit udp any any eq 1575
  permit tcp any any eq 1630
  permit udp any any eq 1630
+ip access-list extended hvac
+ permit ip 10.22.230.0 0.0.0.31 object-group day-enterprise-servers
+ permit udp 10.22.230.0 0.0.0.31 object-group dns-servers eq domain
+ permit udp 10.22.230.0 0.0.0.31 object-group ntp-servers eq ntp
+ permit icmp 10.22.230.0 0.0.0.31 host 10.22.230.1
+ permit icmp host 10.22.230.1 10.22.230.0 0.0.0.31
+ deny   ip any 10.0.0.0 0.255.255.255
+ deny   ip any 192.168.0.0 0.0.255.255
+ deny   ip any 172.16.0.0 0.15.255.255
+ permit tcp 10.22.230.0 0.0.0.31 any eq 587 log-input
 ip access-list extended sbhc-acl
  permit ip 10.22.107.0 0.0.0.255 10.107.50.0 0.0.0.255
  permit tcp 10.22.107.0 0.0.0.255 any eq 443