diff --git a/server/fw_util_ipfw.c b/server/fw_util_ipfw.c
index 2134d469..6dd5d158 100644
--- a/server/fw_util_ipfw.c
+++ b/server/fw_util_ipfw.c
@@ -848,7 +848,9 @@ ipfw_purge_expired_rules(const fko_srv_options_t *opts)
 
         snprintf(cmd_buf, CMD_BUFSIZE-1, "%s " IPFW_DEL_RULE_ARGS,
             opts->fw_config->fw_command,
+#ifndef __APPLE__
             fwc.expire_set_num,
+#endif
             curr_rule
         );
 
diff --git a/server/fw_util_ipfw.h b/server/fw_util_ipfw.h
index d574ce9d..aceb4ada 100644
--- a/server/fw_util_ipfw.h
+++ b/server/fw_util_ipfw.h
@@ -45,13 +45,22 @@ enum {
 #define IPFW_MOVE_RULE_ARGS          "set move rule %u to %u"
 #define IPFW_MOVE_SET_ARGS           "set move %u to %u"
 #define IPFW_DISABLE_SET_ARGS        "set disable %u"
-#define IPFW_DEL_RULE_ARGS           "set %u delete %u"
-#define IPFW_DEL_RULE_SET_ARGS       "delete set %u"
-#define IPFW_LIST_RULES_ARGS         "-d -S -T set %u list"
 #define IPFW_LIST_ALL_RULES_ARGS     "list"
-#define IPFW_LIST_SET_RULES_ARGS     "set %u list"
-#define IPFW_LIST_EXP_SET_RULES_ARGS "-S set %u list"
-#define IPFW_LIST_SET_DYN_RULES_ARGS "-d set %u list"
+#define IPFW_DEL_RULE_SET_ARGS       "delete set %u"
+
+#ifdef __APPLE__
+    #define IPFW_DEL_RULE_ARGS           "delete %u" //--DSS diff args
+    #define IPFW_LIST_RULES_ARGS         "-d -S -T list | grep 'set %u'"
+    #define IPFW_LIST_SET_RULES_ARGS     "-S list | grep 'set %u'"
+    #define IPFW_LIST_EXP_SET_RULES_ARGS "-S list | grep 'set %u'"
+    #define IPFW_LIST_SET_DYN_RULES_ARGS "-d list | grep 'set %u'"
+#else
+  #define IPFW_DEL_RULE_ARGS           "set %u delete %u"
+  #define IPFW_LIST_RULES_ARGS         "-d -S -T set %u list"
+  #define IPFW_LIST_SET_RULES_ARGS     "set %u list"
+  #define IPFW_LIST_EXP_SET_RULES_ARGS "-S set %u list"
+  #define IPFW_LIST_SET_DYN_RULES_ARGS "-d set %u list"
+#endif
 
 void ipfw_purge_expired_rules(const fko_srv_options_t *opts);
 
diff --git a/server/pcap_capture.h b/server/pcap_capture.h
index 7ac4453a..8a324079 100644
--- a/server/pcap_capture.h
+++ b/server/pcap_capture.h
@@ -41,7 +41,7 @@
  * mode to on unless it is a FreeBSD system. --DSS XXX: What we really need
  * to do is figure out what the difference is and address it correctly.
 */
-#if defined(__FreeBSD__)
+#if defined(__FreeBSD__) || defined(__APPLE__)
     #define DEF_PCAP_NONBLOCK 0
 #else
     #define DEF_PCAP_NONBLOCK 1