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David Dodd

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Nessus is a vulnerability scanner program; it is free for personal use using the nessus for home. They also have a nessus for business which requires a fee. I will be discussing the nessus for home use and using it with the popular metasploit framework. Acquire the latest release of nessus homefeed Nessus-4.4.1-ubuntu1010_i386.deb and register for the activation code. Follow the instructions listed in the document ion for installing with Ubuntu and start to configure. Nessus daemon cant be started until nessus has been registered and the plugin download has occurred. $ sudo /opt/nessus/bin/nessus-fetch –register 'registration code from nessus' Add user $ sudo /opt/nessus/sbin/nessus-adduser Make cert $ sudo /opt/nessus/sbin/nessus-mkcert Start the nessus Daemon $ sudo /etc/init.d/nessusd start Open up web browser to https://localhost:8834, login and complete a policy ... (more)

Tutorial: OpenSSL Command

The OpenSSL is based on SSLeay library developed by Eric A. Young and Tim J. Hudson and licensed under an Apache-style license. OpenSSL has lots of features but I will cover encoding, checksums, encryption, passwords and pass phrases. Many Linux distributions have OpenSSL as part of the bundled packages and is most likely located in /usr/bin. To find it on your system type: $ which openssl /usr/bin/openssl $ openssl version OpenSSL 1.0.0a 1 Jun 2010 Versions may vary and currently openssl-1.0.0d Feb 8 is the current version. Most of the examples that are found in this document sh... (more)

Gitrob on the Network | @ThingsExpo #BigData #IoT #M2M #Security

Gitrob on the Network Developers generally like to share their code, and many of them do so by open sourcing it on GitHub, a social code hosting and collaboration service. Many companies also use GitHub as a convenient place to host both private and public code repositories by creating GitHub organizations where employees can be joined.  Sometimes Employee might publish things that might be sensitive in nature and these things might lead to compromise of a system. Gitrob is a tool that Michael Henriksen developed that scans the github repositories and match filenames against a ra... (more)

Intruder Detection with tcpdump

To capture, parse, and analyze traffic tcpdump is a very powerful tool. To begin a basic capture uses the following syntax. tcpdump -n –i -s -n      tells tcpdump to not resolve IP addresses to domain names and port numbers to service names. -I       tells tcpdump which interface to use. -s      tells tcpdump how much of the packet to record. I used 1515 but 1514 is sufficient for most cases. If you don’t specify a size then it will only capture the first 68 bytes of each packet. A snaplen value of 0 which will use the required length to ... (more)

Performing a Penetration Test on a Customer’s Network

When performing a penetration test on a customer’s network by simulating an attack and trying to find a way inside many forget there is an easier way. Many networks have well established security protection through firewalls, Intrusion Detections/ Protections Systems that will alert to your presents. Performing a vulnerability scan using tools such as NeXpose, Nessus, nmap, etc will alert many systems. By performing some research on the target and learn what the company does you can narrow your attack. By using some social engineering you can email your payload to an inspecting v... (more)