"firewall" tag
Firewall Scan

Advanced Nmap: Scanning Firewalls

After four articles on Nmap [1, 2, 3 & 4], which explained a number of command-line options for scan technique specification, target specification, port specifications, host discovery, evasion techniques, etc, it is time…

Scan time!

Advanced Nmap: FIN Scan & OS Detection

Nmap is a fantastic tool, and I just can’t refrain from praising it, every time I use it. The earlier articles in this series have detailed many important Nmap scan types. Let us…

Android application development

Android Application Development: CLI Tools

This article on Android application development introduces you to the command line utilities that come packaged with the Android SDK, all of which are extensively used to create an Android Application. When using…

Building a Server from Scratch, Part 2: Firewalls, Port Forwarding, NAT, DHCP & TFTP

Last month, we built a server using off-the-shelf hardware. This time, let’s set up some essential server services.

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