OnWorks favicon

cravlAndBlock download for Linux

Free download cravlAndBlock Linux app to run online in Ubuntu online, Fedora online or Debian online

This is the Linux app named cravlAndBlock whose latest release can be downloaded as cravlAndBlock.jar. It can be run online in the free hosting provider OnWorks for workstations.

Download and run online this app named cravlAndBlock with OnWorks for free.

Follow these instructions in order to run this app:

- 1. Downloaded this application in your PC.

- 2. Enter in our file manager https://www.onworks.net/myfiles.php?username=XXXXX with the username that you want.

- 3. Upload this application in such filemanager.

- 4. Start the OnWorks Linux online or Windows online emulator or MACOS online emulator from this website.

- 5. From the OnWorks Linux OS you have just started, goto our file manager https://www.onworks.net/myfiles.php?username=XXXXX with the username that you want.

- 6. Download the application, install it and run it.




cravlAndBlock is simple java application that cravl error log file of Your web server and add all attacker IPs.
I.E. All Modsecure entries, scans and so on.
Every bad IP will be added to hosts.deny file with ALL prefix.
For sure it will not block all atacks but it will help.

How it works: use cron to start java cravlAndBlock.jar in the same folder add properties.xml (I addes sample properties.xml file).
And thats all.

Program will start from cron, read properties file and
make backup of hosts.deny file in backu location,
cravl log file / files and add entries to hosts.deny file.
It will print log information on the screen.

If You are interested in cravl and block project please make a small donation for the author by paypal (to mail [email protected]). Those donation will make the project live. Everyone needs to eat something:)

User interface

Non-interactive (Daemon)

Programming Language


Database Environment


This is an application that can also be fetched from https://sourceforge.net/projects/cravlandblock/. It has been hosted in OnWorks in order to be run online in an easiest way from one of our free Operative Systems.

Free Servers & Workstations

Download Windows & Linux apps

Linux commands