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November 14th, 2010

Preventing Brute Force Attacks With BlockHosts On Debian Lenny

Debian, Security, by suvi.

New tutorial added to HowtoMatrix database.
Preventing Brute Force Attacks With BlockHosts On Debian Lenny

Preventing Brute Force Attacks With BlockHosts On Debian Lenny

In this article I will show how to install and configure BlockHosts
on a Debian Lenny system. BlockHosts is a Python tool that observes
login attempts to various services, e.g. SSH, FTP, etc., and if it finds
failed login attempts again and again from the same IP address or host,
it stops further login attempts from that IP address/host. By default,
BlockHosts supports services that use TCP_WRAPPERS, such as SSH, i.e.
services, that use /etc/hosts.allow or /etc/hosts.deny, but it can also block other
services using iproute or iptables.

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