Package: fail2ban

"fail2ban" package binaries on CentOS:

/usr/bin/fail2ban-client /usr/bin/fail2ban-regex /usr/bin/fail2ban-server /usr/bin/fail2ban-testcases

You may install this package on CentOS with yum install fail2ban

"fail2ban" package binaries on Debian:

/usr/bin/fail2ban-client /usr/bin/fail2ban-regex /usr/bin/fail2ban-server

You may install this package on Debian with apt-get install fail2ban