So when many people think of Nmap, it is often related to those who are new or learning in the world of scanning and tracking network ports. It's open source. It's easy to use (with a GUI). It has a full community of friendly users, plays well with friends, is good with children and even makes cupcakes at parties (okay maybe not those last few). The point is, the reality may not always be apparent; that Nmap provides some serious, enterprise, #&$#!-kicking functionality. And while we tend to avoid pushing specific papers or How-tos that cost money, this paper we found brought up a nice point considering that Nmap is, in fact, our Open Source Tool of the Month.
So if you were curious as to whether Nmap is serious enough to warrant charging for a how-to, (without shame that is) check this out. Could you find this information elsewhere? Probably. Is it as good? We don't know, we didn't buy it :) Is it easier to understand and follow, especially for someone in a business environment? Just maybe.
Either way, when push comes to shove, it's nice to see an open source tool get some attention. And who knows? If there's some company manager that doesn't trust Nmap's functionality, maybe a paid analysis of its utility could go farther in convincing them than some free how-to you found online (even from such a trustworthy, experienced site such as this :) Fair is fair, and heck, its food for thought.
Source: www.debianadmin.com - Posted by Ryan Berens
If you are planning on using FTP and want to use the TLS protocol, here is a simple and effective HowTo on installing it and getting up and running for your system. The TLS protocol allows applications to communicate across a network in a way designed to prevent eavesdropping, tampering, and message forgery. TLS provides endpoint authentication and communications privacy over the Internet using cryptography.
There are so many network monitoring options for the Open Source user, one might get sick of them. But not likely!
Zabbix has the capability to monitor just a about any event on your network from network traffic to how many papers are left in your printer. It produces really cool graphs.
In this HowTo we install software that has an agent and a server side. The goal is to end up with a setup that has a nice web interface that you can show off to your boss.
It's a great open source tool that lets you know what's out there.
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!
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.
Source: "An Illustrated Guide to SSH Agent Forwarding" - Posted by Administrator
This Tech Tip presents a fairly comprehensive view of SSH public keys and agent forwarding, with plenty of illustrations to augment the text. It's not really a HOWTO, but more of a backgrounder on the underlying technology of how key agents and forwa
Source: "Getting started with dynamic DNS" - Posted by Administrator
Your ISP probably assigns your computer an IP address dynamically. It means one less thing for the both of you to think about, but it also puts you in a bind if you need to connect to your machine from the outside: you can't locate your PC amidst tho
