Alright, you’re out of space. Maybe you just need a few more megabytes (or even gigabytes) of hard drive space to install your latest computer game, or to accomodate that ever-growing, business-critical database. Maybe your hard drive is actually, literally, filled to capacity. Maybe you’ve uninstalled everything you were willing to get rid of, and […]
In this post, we are going to use the Airport NIC on a Macbook Pro or Air in order to view 802.11 and Radiotap headers using Wireshark. Utilizing the Airport card we can gain access to some useful layer 2 wireless information including signal strength, channel frequency and data rate, and see interesting packets such as beacon […]
A few years ago, a team of students and I did some research on my university’s honeypot network and put together a little presentation about what we found. For those not in the know, a honeypot is a purposefully exposed network system intended to either divert the attention of hackers from production systems or gather […]
If you’re using a Linux solution for your DHCP server, you can use cat and grep to quickly locate the IP address of a particular host based on their hostname. On our OpenSUSE Linux DHCP server, the DHCP lease file is stored at /var/lib/dhcp/db/dhcpd.leases. CentOS/Red Hat Enterprise Linux has the lease file at the same […]
Shortening a URL allows you to condense a long, obnoxious looking web address down to just a few characters and also allows tracking of visitors to that URL depending on which URL shortening service you use. But on the user side of things, do you really know what’s behind a shortened URL? With a normal link, you’re able to […]