diff --git a/api/src/main/java/com/cloud/exception/OriginDeniedException.java b/api/src/main/java/com/cloud/exception/OriginDeniedException.java
new file mode 100644
index 00000000000..42a65ede717
--- /dev/null
+++ b/api/src/main/java/com/cloud/exception/OriginDeniedException.java
@@ -0,0 +1,62 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+package com.cloud.exception;
+
+import com.cloud.user.Account;
+import com.cloud.utils.SerialVersionUID;
+import com.cloud.utils.exception.CloudRuntimeException;
+
+import java.net.InetAddress;
+
+public class OriginDeniedException extends CloudRuntimeException {
+
+    private static final long serialVersionUID = SerialVersionUID.OriginDeniedException;
+
+    public OriginDeniedException(String message) {
+        super(message);
+    }
+
+    public OriginDeniedException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    protected OriginDeniedException() {
+        super();
+    }
+
+    InetAddress origin;
+    Account account;
+
+    public OriginDeniedException(String message, Account account, InetAddress origin) {
+        super(message);
+        this.origin = origin;
+        this.account = account;
+    }
+
+    public Account getAccount() {
+        return account;
+    }
+
+    public InetAddress getOrigin() {
+        return origin;
+    }
+
+    public void addDetails(Account account, InetAddress origin) {
+        this.account = account;
+        this.origin = origin;
+    }
+}
diff --git a/server/src/main/java/com/cloud/api/ApiServer.java b/server/src/main/java/com/cloud/api/ApiServer.java
index cc9ec73c94e..7d096b869a8 100644
--- a/server/src/main/java/com/cloud/api/ApiServer.java
+++ b/server/src/main/java/com/cloud/api/ApiServer.java
@@ -29,6 +29,7 @@ import com.cloud.exception.AccountLimitException;
 import com.cloud.exception.CloudAuthenticationException;
 import com.cloud.exception.InsufficientCapacityException;
 import com.cloud.exception.InvalidParameterValueException;
+import com.cloud.exception.OriginDeniedException;
 import com.cloud.exception.PermissionDeniedException;
 import com.cloud.exception.RequestLimitException;
 import com.cloud.exception.ResourceAllocationException;
@@ -843,11 +844,7 @@ public class ApiServer extends ManagerBase implements HttpRequestHandler, ApiSer
             if (userId != null) {
                 final User user = ApiDBUtils.findUserById(userId);
 
-                if (!commandAvailable(remoteAddress, commandName, user)) {
-                    return false;
-                }
-
-                return true;
+                return commandAvailable(remoteAddress, commandName, user);
             } else {
                 // check against every available command to see if the command exists or not
                 if (!s_apiNameCmdClassMap.containsKey(commandName) && !commandName.equals("login") && !commandName.equals("logout")) {
@@ -989,7 +986,11 @@ public class ApiServer extends ManagerBase implements HttpRequestHandler, ApiSer
             throw new ServerApiException(ApiErrorCode.UNSUPPORTED_ACTION_ERROR, ex.getMessage());
         } catch (final PermissionDeniedException ex) {
             final String errorMessage = "The given command '" + commandName + "' either does not exist, is not available" +
-                    " for user, or not available from ip address '" + remoteAddress + "'.";
+                    " for user.";
+            throw new ServerApiException(ApiErrorCode.UNAUTHORIZED , errorMessage);
+        } catch (final OriginDeniedException ex) {
+            // in this case we can remove the session with extreme prejudice
+            final String errorMessage = "The user '" + user.getUsername() + "' is not allowed to execute commands from ip address '" + remoteAddress.getHostName() + "'.";
             s_logger.debug(errorMessage);
             return false;
         }
@@ -1163,7 +1164,7 @@ public class ApiServer extends ManagerBase implements HttpRequestHandler, ApiSer
             s_logger.debug("CIDRs from which account '" + account.toString() + "' is allowed to perform API calls: " + accessAllowedCidrs);
             if (!NetUtils.isIpInCidrList(remoteAddress, accessAllowedCidrs.split(","))) {
                 s_logger.warn("Request by account '" + account.toString() + "' was denied since " + remoteAddress + " does not match " + accessAllowedCidrs);
-                throw new PermissionDeniedException("Calls for domain '" + account.getAccountName() + "' are not allowed from ip address '" + remoteAddress.getHostAddress());
+                throw new OriginDeniedException("Calls from disallowed origin", account, remoteAddress);
                 }
         }
 
diff --git a/utils/src/main/java/com/cloud/utils/SerialVersionUID.java b/utils/src/main/java/com/cloud/utils/SerialVersionUID.java
index 413ca1a417f..21fdbb4cf11 100644
--- a/utils/src/main/java/com/cloud/utils/SerialVersionUID.java
+++ b/utils/src/main/java/com/cloud/utils/SerialVersionUID.java
@@ -69,4 +69,5 @@ public interface SerialVersionUID {
     public static final long TaskExecutionException = Base | 0x2d;
     public static final long SnapshotBackupException = Base | 0x2e;
     public static final long UnavailableCommandException = Base | 0x2f;
+    public static final long OriginDeniedException = Base | 0x30;
 }