diff --git a/centos/1.6.2.24/Dockerfile b/centos/1.6.2.24/Dockerfile
index 674afb9..387d9fe 100644
--- a/centos/1.6.2.24/Dockerfile
+++ b/centos/1.6.2.24/Dockerfile
@@ -6,6 +6,8 @@ LABEL maintainer="Andrius Kairiukstis <k@andrius.mobi>"
 ENV ASTERISK_VERSION 1.6.2.24
 ENV ASTERISK_ADDONS_VERSION 1.6.2.4
 
+RUN yum -y install fail2ban && yum -y clean all  && rm -rf /var/cache
+
 COPY build-asterisk.sh /
 RUN /build-asterisk.sh