Log4j 2.13.3 upgrade
diff --git a/conf/log4j.properties b/conf/log4j.properties
deleted file mode 100644
index 5e707fc..0000000
--- a/conf/log4j.properties
+++ /dev/null
@@ -1,28 +0,0 @@
-#
-#   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.
-#
-
-log4j.appender.Stdout=org.apache.log4j.ConsoleAppender
-log4j.appender.Stdout.layout=org.apache.log4j.PatternLayout
-log4j.appender.Stdout.layout.conversionPattern=%-5p - %d{dd MMM yyyy HH:mm:ss,SSS} - %-26.26c{1} - %m\n
-
-#log4j.rootLogger=DEBUG,Stdout
-log4j.rootLogger=WARN,Stdout
-log4j.logger.org.openldap=INFO
-log4j.logger.org.apache.directory.fortress.core=INFO
-log4j.logger.org.apache.directory.fortress.realm=INFO
\ No newline at end of file
diff --git a/conf/log4j.xml b/conf/log4j.xml
new file mode 100644
index 0000000..63296ca
--- /dev/null
+++ b/conf/log4j.xml
@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ *   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.
+ *
+ -->
+<Configuration>
+    <Appenders>
+        <Console name="console" target="SYSTEM_OUT">
+            <PatternLayout pattern="%-5p - %d{dd MMM yyyy HH:mm:ss,SSS} - %-26.26c{1} - %m%n"/>
+        </Console>
+    </Appenders>
+    <Loggers>
+        <Logger name="org.apache.directory.fortress.core" level="info"/>
+        <Logger name="org.apache.directory.fortress.realm" level="info" />
+        <Logger name="org.openldap" level="info" />
+        <Root level="warn">
+            <AppenderRef ref="console"/>
+        </Root>
+    </Loggers>
+</Configuration>
\ No newline at end of file
diff --git a/impl/pom.xml b/impl/pom.xml
index 2e37b1d..c7c420e 100644
--- a/impl/pom.xml
+++ b/impl/pom.xml
@@ -53,9 +53,9 @@
     </dependency>
 
     <dependency>
-      <groupId>org.slf4j</groupId>
-      <artifactId>slf4j-log4j12</artifactId>
-      <version>${slf4j.log4j12.version}</version>
+      <groupId>org.apache.logging.log4j</groupId>
+      <artifactId>log4j-slf4j-impl</artifactId>
+      <version>${slf4j.impl.version}</version>
     </dependency>
 
   </dependencies>
diff --git a/pom.xml b/pom.xml
index e52e42b..54689bb 100644
--- a/pom.xml
+++ b/pom.xml
@@ -100,8 +100,8 @@
     <findbugs.annotation.version>1.0.0</findbugs.annotation.version>
     <junit-addons.version>0.1</junit-addons.version>
     <skin.version>1.0.2</skin.version>
-    <slf4j.api.version>1.7.21</slf4j.api.version>
-    <slf4j.log4j12.version>1.7.21</slf4j.log4j12.version>
+    <slf4j.api.version>1.7.29</slf4j.api.version>
+    <slf4j.impl.version>2.13.3</slf4j.impl.version>
     <tomcat.catalina.version>9.0.29</tomcat.catalina.version>
     <findbugs.annotations.version>1.0.0</findbugs.annotations.version>
   </properties>
@@ -440,10 +440,10 @@
 
     <!-- logging implementation used for unit tests -->
     <dependency>
-      <groupId>org.slf4j</groupId>
-      <artifactId>slf4j-log4j12</artifactId>
+      <groupId>org.apache.logging.log4j</groupId>
+      <artifactId>log4j-slf4j-impl</artifactId>
       <scope>test</scope>
-      <version>${slf4j.log4j12.version}</version>
+      <version>${slf4j.impl.version}</version>
     </dependency>
 
     <dependency>