Fail2ban is a program that examines specific system logs in order to ban suspicious activity from IP addresses, which could potentially lead to a failure or attack. It searches for regular expressions declared in the *.conf
files under the /etc/fail2ban/filter.d/
folder. If a condition is matched, it will add the suspicious IP address to the Linux kernel's firewall (iptables) and block it after a certain number of retries and for a certain period of time, sending an e-mail address to the administrator. These actions are defined in the jail.conf
file, which is situated in the /etc/fail2ban/
folder. Fail2ban and iptables come installed in Elastix by default. In case it is not installed, we can simply do it by typing yum -y install fail2ban
.
Elastix Unified Communications Server Cookbook
Elastix Unified Communications Server Cookbook
Overview of this book
Table of Contents (24 chapters)
Elastix Unified Communications Server Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Free Chapter
Installing Elastix
Basic PBX Configuration
Understanding Inbound Call Control
Knowing Internal PBX Options and Configurations
Setting up the E-mail Service
Elastix Fax System
Using the Call Center Module
Going Deeper into Unified Communications
Networking with Elastix
Knowing the State of Your Elastix System and Troubleshooting
Securing your Elastix System
Implementing Advanced Dialplan Functions
Description and Use of the Most Well-known FreePBX Modules
Addon Market Module
Asterisk Essential Commands
Asterisk Gateway Interface Programming
Helpful Linux Commands
Index
Customer Reviews