Security
Security enhancing softwares for Debian GNU/Linux
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Watch for system upgrades on Debian
The number one rule to secure an operating system is to keep its software up to date. This howto setup a e-mail alert when new upgrades are available.
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Harden the SSH access security on Debian
The Secure SHell (aka. SSH) access is the main remote administration tool for a Unix server. By default, this access security is provided by the connection encryption and the need of login and password. This how-to propose various methods to harden a SSH server security.
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Install Rootkit Hunter (rkhunter) on Debian
Rootkit Hunter is a tool dedicated to rootkit detection. It send alerts when your system has been compromised.
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Secure the temporary folder on Debian
The /tmp folder can be used to compromised the system security. A simple and efficient way to protect the system is to prevent the execution of scripts present in this folder.
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Install the ClamAV anti-virus on Debian
ClamAV is a free software anti-virus. Its scanning engine is very efficient. It is particularly suited to e-mail servers protection, and regular checks of server's files. This howto helps you install the latest version of ClamAV on Debian.
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Block the vulnerability scanner DFind
The vulnerability scanner DFind is the source of "w00tw00t.at.ISC.SANS.DFind" lines showing in Apache 2 logs. This howto install a set of iptables rules blocking those requests.
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Install the Peer 2 Peer privacy protection PeerGuardian on Debian
PeerGuardian is a Peer 2 Peer firewall that block bad peers. This tool is strongly recommended if you are a BitTorrent or aMule user.
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Filter the access to a network port with iptables on Debian
This howto propose a simple way to filter selectively the access to some ports of a Debian server.