diff --git a/Shorewall/modules.essential b/Shorewall/modules.essential
index 15f2a63ce..5b3fdce0e 100644
--- a/Shorewall/modules.essential
+++ b/Shorewall/modules.essential
@@ -25,6 +25,8 @@ loadmodule ip_conntrack
 loadmodule nf_conntrack
 loadmodule nf_conntrack_ipv4
 loadmodule iptable_nat
+loadmodule nf_nat
+loadmodule nf_nat_ipv4
 loadmodule iptable_raw
 loadmodule xt_state
 loadmodule xt_tcpudp
diff --git a/Shorewall/modules.xtables b/Shorewall/modules.xtables
index dcb2d3752..ad9a296b0 100644
--- a/Shorewall/modules.xtables
+++ b/Shorewall/modules.xtables
@@ -31,6 +31,7 @@ loadmodule xt_mac
 loadmodule xt_mark
 loadmodule xt_MARK
 loadmodule xt_multiport
+loadmodule xt_nat
 loadmodule xt_NFQUEUE
 loadmodule xt_owner
 loadmodule xt_physdev
diff --git a/Shorewall6/modules.essential b/Shorewall6/modules.essential
index 9195e416d..7d3bdfa3d 100644
--- a/Shorewall6/modules.essential
+++ b/Shorewall6/modules.essential
@@ -21,6 +21,8 @@ loadmodule ip6table_mangle
 loadmodule ip6table_raw
 loadmodule xt_conntrack
 loadmodule nf_conntrack_ipv6
+loadmodule nf_nat
+loadmodule nf_nat_ipv6
 loadmodule xt_state
 loadmodule xt_tcpudp
 loadmodule ip6t_REJECT