diff --git a/checks/cisco_asa_connections b/checks/cisco_asa_connections
index 72c54338531c074b64ca6f2179cf9dfc0f6d28b0..f86fa8e15527e2d63b313bbe6b404ef86de698f0 100644
--- a/checks/cisco_asa_connections
+++ b/checks/cisco_asa_connections
@@ -11,6 +11,7 @@
 # 02.07.2016: fixed crit/warn to >=
 # 09.01.2018: some fine tuning (changed infotext)
 # 13.02.2020: changed snmp_info from ".1.3.6.1.4.1.9.9.147.1.2.2.2.1.5" to more specific "1.3.6.1.4.1.9.9.147.1.2.2.2.1.5.40"
+# 24.02.2020: added support for Cisco Firepower Threat Defense
 #
 # sample snmp walk
 #
@@ -63,7 +64,8 @@ check_info['cisco_asa_connections'] = {
     'service_description': 'Cisco ASA connections',
     'has_perfdata'       : True,
     'group'              : 'cisco_asa_connections',
-    'snmp_scan_function' : lambda oid: oid('.1.3.6.1.2.1.1.1.0').lower().startswith('cisco adaptive security appliance'),
+    'snmp_scan_function' : lambda oid: oid('.1.3.6.1.2.1.1.1.0').lower().startswith('cisco adaptive security appliance')
+                                       or oid('.1.3.6.1.2.1.1.1.0').lower().startswith('cisco firepower threat defense'),
     'snmp_info'          : ('.1.3.6.1.4.1.9.9.147.1.2.2.2.1.5.40', [  # CISCO-FIREWALL-MIB::cfwConnectionStatValue.protoIp
                              '6',  # CISCO-FIREWALL-MIB::cfwConnectionStatValue.protoIp.currentInUse
                              '7',  # CISCO-FIREWALL-MIB::cfwConnectionStatValue.protoIp.high
diff --git a/cisco_asa_connections.mkp b/cisco_asa_connections.mkp
index 22ea3f5f4cd44cfe8cb72dab0fcd38641306365a..1086f13c421988c30687b6292c37836f1bd030d6 100644
Binary files a/cisco_asa_connections.mkp and b/cisco_asa_connections.mkp differ
diff --git a/packages/cisco_asa_connections b/packages/cisco_asa_connections
index 8b15a9920a26a0c80a394a177cbdf333827ab3ff..301406c314fd40ebcd9dff387bd742edd7fd9b47 100644
--- a/packages/cisco_asa_connections
+++ b/packages/cisco_asa_connections
@@ -1,5 +1,5 @@
 {'author': u'Th.L. (thl-cmk[at]outlook[dot]com)',
- 'description': u'monitors Cisco ASA number of connetions\nMinimum/Warning/Critical temperature level can be configured via wato.\n',
+ 'description': u'monitors Cisco ASA number of connetions\nMinimum/Warning/Critical level can be configured via wato.\n\n - 24.02.2020: added support for Cisco Firepower Threat Defense',
  'download_url': 'https://thl-cmk.hopto.org',
  'files': {'checks': ['cisco_asa_connections'],
            'web': ['plugins/wato/cisco_asa_connections.py',
@@ -7,6 +7,6 @@
  'name': 'cisco_asa_connections',
  'num_files': 3,
  'title': u'Monitor Cisco ASA connections',
- 'version': '20180326.v.0.3',
+ 'version': '20200224.v.0.3b',
  'version.min_required': '1.2.6p12',
  'version.packaged': '1.4.0p35'}
\ No newline at end of file