Security

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Host Based Intrusion Detection - Samhain

Host Based Intrusion Detection - Samhain

This article describes in some detail how to install Samhain, the host based intrusion detection system. I am not going to ramble on about what host based intrusion detection is or why to use it, as there are plenty of articles already covering those subjects. This article is just to show you how to get Samhain up and running in a client / server configuration with a couple bells and whistles thrown in for fun.

WiKID + OpenLDAP + Freeradius Howto

WiKID + OpenLDAP + Freeradius Howto

I installed Openldap and freeradius on one (virtual) server and WiKID on another. We believe that this separation of duties is good security policy. In a way it also makes the setup easier because both WiKID and Freeradius listen on port 1812 of the localhost. Both servers are running Centos5.

Configuring Source And Destination NAT With Firewall Builder

Configuring Source And Destination NAT With Firewall Builder

Firewall Builder is a firewall configuration and management GUI that supports configuring a wide range of firewalls from a single application. Supported firewalls include Linux iptables, BSD pf, Cisco ASA/PIX, Cisco router access lists and many more. In this tutorial we are going to cover how to use Firewall Builder to configure a NAT rule that translates both the source and destination IP addresses of the original packet. This type of NAT configuration can be useful in a variety of network configurations.

SSL Certificates For PostgreSQL

SSL Certificates For PostgreSQL

This describes how to set up ssl certificates to enable encrypted connections from PgAdmin on some client machine to postgresql on a server machine. The assumption is that postgresql (compiled with ssl support) and openssl are already installed and functional on the server (Linux). PgAdmin is already installed on the client (either Windows or Linux).

Installing Honeyd 1.5c And Arpd 0.2 Under CentOS 5 (With gcc 4.x)

Installing Honeyd 1.5c And Arpd 0.2 Under CentOS 5 (With gcc 4.x)

This tutorial shows how you can install your honeypot by using Honeyd (Virtual Honeypot). Honeyd is a small daemon that creates virtual hosts on a network. The hosts can be configured to run arbitrary services, and their personality can be adapted so that they appear to be running certain operating systems.

Managing A Single Firewall Policy For Multiple Servers Using Firewall Builder

Managing A Single Firewall Policy For Multiple Servers Using Firewall Builder

In this tutorial we are going to cover how to use Firewall Builder clusters to manage a single firewall policy that gets deployed on multiple servers. An example of where you could use this would be managing a shared firewall policy for a collection of web servers that are all providing the same service and should have the same rules.

Using Firewall Builder To Configure Router Access Lists

Using Firewall Builder To Configure Router Access Lists

Firewall Builder is a firewall configuration and management GUI that supports configuring a wide range of firewalls from a single application. Supported firewalls include Linux iptables, BSD pf, Cisco ASA/PIX, Cisco router access lists and many more. This tutorial is the first in a series of howtos that will walk through the basic steps of using Firewall Builder to configure each of the supported firewall platforms. In this tutorial we will configure Access Control Lists (ACL) on a Cisco router.

Installing The WiKID HTML5 Token Client

Installing The WiKID HTML5 Token Client

The WiKID HTML5 token uses the HTML5 APIs to enable the browser to contain an embedded token client. The token uses the same public key + PIN authentication as the standard WiKID tokens but is implemented in JavaScript within the browser. Using HTML5 provides cross-browser support (Firefox and Chrome, not IE yet), a very easy installation process and slick user experience. This tutorial will explain how to install the WiKID HTML5 token client.

How To Test Your Dansguardian, Safesquid, POESIA, Parental Internet Filter Or We-Blocker Keyword Filter Anytime Anywhere

How To Test Your Dansguardian, Safesquid, POESIA, Parental Internet Filter Or We-Blocker Keyword Filter Anytime Anywhere

Keyword filters block unwanted web pages on the basis of potentially fallen words found in them. However, to be sure that a page is indeed offensive, keyword filters nowadays are not designed to block sites on the basis of just about any potentially offensive word. Instead they measure the number of potentially offensive phrases and often the number of times they occur so as to allow a limited number of occurrences in pages such as those on anatomy, forms requiring gender information, crime reports, statistical reports, administrative information, art etc. The leading keyword blockers like Dansguardian which is extremely popular on Linux or SafeSquid which is popular on Linux and Windows use this method known as a weighed keyword score.

How To Configure PureFTPd To Accept TLS Sessions On OpenSUSE 11.3

How To Configure PureFTPd To Accept TLS Sessions On OpenSUSE 11.3

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 configure PureFTPd to accept TLS sessions on an OpenSUSE 11.3 server.

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