Network admins must scan for security vulnerabilities and patch them promptly to prevent attacks and security breaches. Metasploit is an open-source framework for detecting threats and vulnerabilities.
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Do you use Snort? Do you want to get more out of it than you already are? Have no fear, James Turnbull will take you through the process of kicking you Intrusion Detection system up a notch. Check it out:
Barnyard improves Snort's speed and efficiency processing outputted data off-loaded by Snort. Barnyard leaves Snort more capacity to perform its key function: scanning and analyzing traffic for anomalies and attacks. We will set Snort to output its alerts and logs to the unified (binary) format, which isn't as processor-intensive as other kinds of output, and then make use of Barnyard to process the resulting output into our required format(s). This tip presumes you already have Snort installed and configured.
Ever wanted to set up a robust, manageable and capable network monitoring system? How about one that is free to download? Look no further than Nagios with this HowTo from Rainer Brunold at Novell. With these basic steps you'll be able to pin down movement on your network in no time:
Server Preparation
Software Download and Extraction
Security Preparation
Software Compilation and Installation
Installation of Plugins
Configuration
Apache Security Preparation
Apache and Nagios Startup
Testing and Next Steps
Take Nagios for a spin and look out for more of the same soon!
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SSH offers a highly secure channel for remote administration of servers. However, if you face an audit for regulatory or business requirements, such as Visa/Mastercard PCI, you need to be aware of some potential authentication related short-comings that may cause headaches in an audit. For example:
* There is no way to control which users have public key authorization
* There is no way to enforce passphrase complexity (or even be sure that one is being used)
* There is no way to expire a public key
This method is quiet useful for inverse mapping the targets for host alive checks.The point will be proved through the scapy via packet crafting.In this we will discuss about inverse mapping with or without padding to compare the results.We know with some tools the response like host unreachable or no response with tool like hping.Lets play with scapy a bit:
This is very good tutorials for bandwidth monitoring,network monitoring and servers monitoring tools with clear step by step installation guides this includes Nagios, MRTG, RTG, Netmrg, Darkstat, monit, munin, mon, oreon, Saidar, Cacti, Bigsister, ibmonitor, zabbix. This resource is very useful for Users and Administrators to monitor their networks, bandwidth, and servers.
The purpose of this book is to provide ways to make it difficult to break in initially as well as to detect the evidence of the attack quickly. But you must not use this book, or any other books, as your only resource of information for this purpose.
This article provides an overview of LDP, including LDP components and operations that are related to pseudowire emulation over MPLS along with an explanation of the control signaling and data switching details of AToM.
This document describes the software and procedures to set up and use IEEE 802.1X Port-Based Network Access Control using Xsupplicant as Supplicant with FreeRADIUS as a back-end Authentication Server.
This is a cookbook recipe on how to set up and run IP aliasing on a Linux box and how to set up the machine to receive e-mail on the aliased IP addresses.
IptablesWeb is a free software (under GPL licence): it makes possible to inspect iptables logs by using a web browser.
It's a plugin-based multilanguage software written in PHP using 3 free php classes.
