diff --git a/roles/nat_server/templates/iptables.j2 b/roles/nat_server/templates/iptables.j2
index 07def7ca120b86a9fc573c9f7ac3bcc249889df8..c311a4463467e00c82cf77dbe0e93263b3fa6e4a 100644
--- a/roles/nat_server/templates/iptables.j2
+++ b/roles/nat_server/templates/iptables.j2
@@ -22,6 +22,7 @@ COMMIT
 :INPUT ACCEPT [0:0]
 :FORWARD ACCEPT [0:0]
 :OUTPUT ACCEPT [0:0]
+-A INPUT -s {{ PRIVATE_NETWORK_CIDR }} -j ACCEPT
 -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
 -A INPUT -p icmp -j ACCEPT
 -A INPUT -i lo -j ACCEPT