HAVP (HTTP Antivirus Proxy) is a proxy with a ClamAV anti-virus scanner. The main aims are continuous, non-blocking downloads and smooth scanning of dynamic and password protected HTTP traffic. Havp antivirus proxy has a parent and transparent proxy mode. It can be used with squid or standalone. 1. Install HAVP apt-get install havp
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mod_auth_openid is an authentication module for the Apache 2 webserver. It handles the functions of an OpenID consumer as specified in the OpenID 2.0 specification. After a user authenticates themselves, the user’s identity will be available in the REMOTE_USER variable. A cookie named open_id_session_id is saved to maintain each [...]
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mod_spamhaus is an Apache module for DNS Block Listing that protects web services by denying access to particular IP addresses. It can stop spam relaying via web form URL injection, and block HTTP DDoS attacks from bot-nets. It queries sbl-xbl.spamhaus.org, taking advantage of the Spamhaus Block List (SBL) and the Exploits Block List [...]
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If you would like to setup a Virtual Private Network (VPN) for Windows clients, PPTP is a great choice. It’s easy to set up on the server and you don’t need any additional software for the Windows clients to connect. 1. Install the required packages apt-get install pptpd
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suPHP is a tool for executing PHP scripts with the permissions of their owners. It consists of an Apache module (mod_suphp) and a setuid root binary (suphp) that is called by the Apache module to change the uid of the process executing the PHP interpreter. 1. Install suPHP apt-get install libapache2-mod-suphp
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Nikto is a web server scanner which performs comprehensive tests against web servers for multiple items, including over 3500 potentially dangerous files/CGIs, versions on over 900 servers, and version specific problems on over 250 servers. 1. Install Nikto apt-get install nikto
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Allowing root logins to your SSH damon is a big security threat. If the SSH port is open, hackers will probably at some time attempt to brute force your root password. It’s a good idea to disable root logins to SSH and instead use a normal user to login and type “su -” to enter the super user shell or sudo to perform [...]
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Sudo allows a system administrator to delegate authority to give certain users (or groups of users) the ability to run some (or all) commands as root or another user while providing an audit trail of the commands and their arguments. 1. Create a new user (optional) adduser user1
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Stunnel can be used to provide secure encrypted connections for clients or servers that do not speak TLS or SSL natively. In this tutorial we’ll secure Samba connection but you could use this for other services like SMTP, IMAP, POP3 etc. If you are securing a service where the client supports encrypting like SMTP, IMAP and POP3 you [...]
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In this tutorial we’ll set up a simple port forwarding (NAT) using iptables. 1. Enable ip forward echo "1" > /proc/sys/net/ipv4/ip_forward
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