IPv6 – IT Blog

Setting up Fail2ban with IPv6

I will give an example of configuring Fail2ban to work with IPv6 addresses.

Disabling IPv6 on Linux

First, check whether IPv6 protocol support is enabled or disabled (0 – on, 1 – off):

Lowering the priority of IPv6

It took one day to lower the priority of IPv6 on one Ubuntu servers at Hetzner.de, as the IPv6 network was unstable, some hosts were periodically unavailable by IPv6, delays appeared, etc.