Requirements

Required

The only required dependency needed to run Fail2ban is Python. You need:

• 0.9 branch
  • Python >=2.3

• 0.8 branch (<0.8.2)
  • Python >=2.4

• 0.8 branch (>=0.8.2)
  • Python >=2.3

• 0.6 branch
  • Python >=2.3

Since 0.8.2, we set the minimal requirement back to Python 2.3. Lots of rock-solid server distributions are still shipped with this version of Python.

Optional

However, you will need some of these softwares depending on your needs and setup:

• Netfilter/Iptables
• Shorewall
• TCP Wrapper
• a mailer script