Most people who have written networking software are familiar with the TCP and UDP protocols. These are used to connect distributed applications and allow messages to flow between them. These ...

hehehe<P>This is an entire article in itself, but to try and put it in 1000 words or less,<P>When you send a page request to a web server your address for the want of a better IP example will be ...

After introducing and recommending SELinux a couple of weeks ago, I followed up with some of the basics – learning about setting file contexts with the semanage tool. This time, I’ll show you how to ...

In the last issue we started following a packet's journey from the wire up to the higher levels of network stack processing. We left the packet at the end of layer 3 processing, where IP has ...

Security practitioners for decades have advised people to limit DNS queries against their DNS servers to only use UDP port 53. The reality is that DNS queries can also use TCP port 53 if UDP port 53 ...