Security

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Getting Started With Firewall Builder

Getting Started With Firewall Builder

This guide presents an introduction to Firewall Builder. Firewall Builder (also known as fwbuilder) is a GUI firewall configuration and management tool that supports iptables (netfilter), ipfilter, pf, ipfw, Cisco PIX (FWSM, ASA) and Cisco routers extended access lists. Both professional network administrators and hobbyists managing firewalls with policies more complex that is allowed by simple web based UI can simplify management tasks with the application. The program runs on Linux, FreeBSD, OpenBSD, Windows and Mac OS X and can manage both local and remote firewalls.

How To Add Two-Factor Authentication To phpBB

How To Add Two-Factor Authentication To phpBB

This document describes how to add WiKID two-factor authentication to phpBB through Apache using mod_auth_xradius. Given the recent attack against phpBB and the exposure of it's users' passwords, we thought two-factor authentication might be timely.

Blocking IP Addresses Of Any Country With iptables

Blocking IP Addresses Of Any Country With iptables

This article explains how you can block IP addresses of any country with the help of iptables.

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Fedora 10)

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Fedora 10)

This document describes how to install a mail server based on Postfix that is based on virtual users and domains, i.e. users and domains that are in a MySQL database. I'll also demonstrate the installation and configuration of Courier (Courier-POP3, Courier-IMAP), so that Courier can authenticate against the same MySQL database Postfix uses. The resulting Postfix server is capable of SMTP-AUTH and TLS and quota (quota is not built into Postfix by default, I'll show how to patch your Postfix appropriately). Passwords are stored in encrypted form in the database (most documents I found were dealing with plain text passwords which is a security risk). In addition to that, this tutorial covers the installation of Amavisd, SpamAssassin and ClamAV so that emails will be scanned for spam and viruses. I will also show how to install SquirrelMail as a webmail interface so that users can read and send emails and change their passwords.

How To Configure Apache To Use Radius For Two-Factor Authentication On Ubuntu

How To Configure Apache To Use Radius For Two-Factor Authentication On Ubuntu

This document describes how to add WiKID two-factor authentication to Apache 2.x using mod_auth_radius on Ubuntu 8.1. A previous article described how to add two factor authentication to apache on Fedora. Interestingly, a patch has been created to update mod_auth_radius to work with Apache 2.2+, however, it has only been updated for Debian and Ubuntu. For Fedora and other RedHat flavors of Linux, it is recommended that you use mod_auth_xradius.

Samba + Clamd + Samba-Vscan On CentOS 5.2

Samba + Clamd + Samba-Vscan On CentOS 5.2

This is a howto on getting samba + clamav + samba-vscan to work on a CentOS 5.2 system.

Setting Up ProFTPd + TLS On Ubuntu 8.10 (Intrepid Ibex)

Setting Up ProFTPd + TLS On Ubuntu 8.10 (Intrepid Ibex)

FTP is a very insecure protocol because all passwords and all data are transferred in clear text. By using TLS, the whole communication can be encrypted, thus making FTP much more secure. This article explains how to set up ProFTPd with TLS on an Ubuntu 8.10 server.

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Ubuntu 8.10)

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Ubuntu 8.10)

This document describes how to install a mail server based on Postfix that is based on virtual users and domains, i.e. users and domains that are in a MySQL database. I'll also demonstrate the installation and configuration of Courier (Courier-POP3, Courier-IMAP), so that Courier can authenticate against the same MySQL database Postfix uses. The resulting Postfix server is capable of SMTP-AUTH and TLS and quota (quota is not built into Postfix by default, I'll show how to patch your Postfix appropriately). Passwords are stored in encrypted form in the database (most documents I found were dealing with plain text passwords which is a security risk). In addition to that, this tutorial covers the installation of Amavisd, SpamAssassin and ClamAV so that emails will be scanned for spam and viruses. I will also show how to install SquirrelMail as a webmail interface so that users can read and send emails and change their passwords.

Installing ISP-fw (Firewall) On Linux

Installing ISP-fw (Firewall) On Linux

ISP-fW is a firewall script that provides port forwarding, packet filtering, stateful packet inspection, port redirection, masquerading, SNAT/ DNAT, TOS, and never the last it generates htb rules for bandwidth management. With ISP-fw, you can turn a PC into a gateway with shaping capabilities.

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