New: Added check to ensure FW is enabled before opening and closing ports.

NzbDrone.Common/SecurityProvider.cs

@@ -37,6 +37,10 @@ namespace NzbDrone.Common
                 return;
             }
 
+            int port = 0;
+
+            if (IsFirewallEnabled())
+            {
                 if(IsNzbDronePortOpen())
                 {
                     Logger.Trace("NzbDrone port is already open, skipping.");
@@ -44,10 +48,11 @@ namespace NzbDrone.Common
                 }
 
                 //Close any old ports
-            var port = CloseFirewallPort();
+                port = CloseFirewallPort();
 
                 //Open the new port
                 OpenFirewallPort(_configFileProvider.Port);
+            }
 
             //Skip Url Register if not Vista or 7
             if (_enviromentProvider.GetOsVersion().Major < 6)
@@ -161,6 +166,22 @@ namespace NzbDrone.Common
             return 0;
         }
 
+        private bool IsFirewallEnabled()
+        {
+            try
+            {
+                var netFwMgrType = Type.GetTypeFromProgID("HNetCfg.FwMgr", false);
+                var mgr = (INetFwMgr)Activator.CreateInstance(netFwMgrType);
+                return mgr.LocalPolicy.CurrentProfile.FirewallEnabled;
+            }
+
+            catch(Exception ex)
+            {
+                Logger.WarnException("Failed to check if the firewall is enabled", ex);
+                return false;
+            }
+        }
+
         private bool RegisterUrl(int portNumber)
         {
             try

NzbDrone.Web/Models/SeriesModel.cs

@@ -45,7 +45,7 @@ namespace NzbDrone.Web.Models
         public bool Monitored { get; set; }
 
         [DisplayName("Backlog Setting")]
-        [Description("Should NzbDrone download past missing episodes?")]
+        [Description("Should NzbDrone search for missing episodes every 30 days?")]
         public int BacklogSetting { get; set; }
     }
 }