--- etc/periodic/security/500.ipfwdenied
+++ etc/periodic/security/500.ipfwdenied
@@ -41,7 +41,7 @@
 
 case "$daily_status_security_ipfwdenied_enable" in
     [Yy][Ee][Ss])
-	TMP=`mktemp -t security`
+	TMP=`mktemp ${TMPDIR:-/tmp}/security.XXXXXXXXXX`
 	if ipfw -a list 2>/dev/null | egrep "deny|reset|unreach" > ${TMP}; then
 	  check_diff new_only ipfw ${TMP} "${host} ipfw denied packets:"
 	fi
--- etc/periodic/security/510.ipfdenied
+++ etc/periodic/security/510.ipfdenied
@@ -41,7 +41,7 @@
 
 case "$daily_status_security_ipfdenied_enable" in
     [Yy][Ee][Ss])
-	TMP=`mktemp -t security`
+	TMP=`mktemp ${TMPDIR:-/tmp}/security.XXXXXXXXXX`
 	if ipfstat -nhio 2>/dev/null | grep block > ${TMP}; then
 	  check_diff new_only ipf ${TMP} "${host} ipf denied packets:"
 	fi
--- etc/periodic/security/520.pfdenied
+++ etc/periodic/security/520.pfdenied
@@ -41,7 +41,7 @@
 
 case "$daily_status_security_pfdenied_enable" in
     [Yy][Ee][Ss])
-	TMP=`mktemp -t security`
+	TMP=`mktemp ${TMPDIR:-/tmp}/security.XXXXXXXXXX`
 	if pfctl -sr -v 2>/dev/null | nawk '{if (/^block/) {buf=$0; getline; gsub(" +"," ",$0); print buf$0;} }' > ${TMP}; then
 	  check_diff new_only pf ${TMP} "${host} pf denied packets:"
 	fi
--- etc/periodic/security/550.ipfwlimit
+++ etc/periodic/security/550.ipfwlimit
@@ -46,7 +46,7 @@
 	if [ $? -ne 0 ] || [ "$IPFW_VERBOSE" -eq 0 ]; then
 		exit 0
 	fi
-	TMP=`mktemp -t security`
+	TMP=`mktemp ${TMPDIR:-/tmp}/security.XXXXXXXXXX`
 	ipfw -a list | grep " log " | \
 	grep '^[[:digit:]]\+[[:space:]]\+[[:digit:]]\+' | \
 	awk \
--- etc/periodic/security/security.functions
+++ etc/periodic/security/security.functions
@@ -52,7 +52,7 @@
   msg="$1"; shift
 
   if [ "${tmpf}" = "-" ]; then
-    tmpf=`mktemp -t security`
+    tmpf=`mktemp ${TMPDIR:-/tmp}/security.XXXXXXXXXX`
     cat > ${tmpf}
   fi