diff -ur shorewall-5.2.1.orig/shorewall/configfiles/shorewall.conf shorewall-5.2.1/shorewall/configfiles/shorewall.conf
--- shorewall-5.2.1.orig/shorewall/configfiles/shorewall.conf	2018-10-02 15:15:20.000000000 +0000
+++ shorewall-5.2.1/shorewall/configfiles/shorewall.conf	2018-10-11 21:39:19.903033000 +0000
@@ -101,7 +101,7 @@
 
 RESTOREFILE=restore
 
-SHOREWALL_SHELL=/bin/sh
+SHOREWALL_SHELL=/bin/bash
 
 SUBSYSLOCK=/var/lock/subsys/shorewall
 
diff -ur shorewall-5.2.1.orig/shorewall6/configfiles/shorewall6.conf shorewall-5.2.1/shorewall6/configfiles/shorewall6.conf
--- shorewall-5.2.1.orig/shorewall6/configfiles/shorewall6.conf	2018-10-02 15:15:20.000000000 +0000
+++ shorewall-5.2.1/shorewall6/configfiles/shorewall6.conf	2018-10-11 21:39:19.903033000 +0000
@@ -98,7 +98,7 @@
 
 RESTOREFILE=restore
 
-SHOREWALL_SHELL=/bin/sh
+SHOREWALL_SHELL=/bin/bash
 
 SUBSYSLOCK=/var/lock/subsys/shorewall6