Practical documentation and technical guides on network security, firewalls, Linux systems, monitoring, and automation.
We feature technical articles across the entire IT spectrum - Built from real-world experience and continuously updated.
Conditional execution is a term used to describe the execution of processes or commands based on specfic conditions. This can also be thought of as conditional logic. Like with most scripting or programming languages conditional logic is built upon the use of return codes. A return code (exit status) is returned upon process completion to … Read more
Below is a small method for running Java daemons within Linux. The syntax is as follows: nohup is used so that it doesn’t get killed when user logs off </dev/null is used so that it doesn’t require a command-promt of it’s own & is used so that the Java daemon runs as a background process. … Read more
In order to configure an Windows 2008 R2 Server you will need to make a number of changes to the registry. This tutorial will show you both the settings for configuring the NTP Server in addition to the client settings. NOTES It is worth noting that this example is based on the below, A Windows … Read more
The following syntax will scan a range of IP addresses. At the point of a ARP response being received it will show a reply message (shown in below example). Note : In this example it will scan IPs between 10.1.1.1-255. if [ -x /sbin/arping ] ; then for i in {1..255} ; do echo arping … Read more
The following command will place a clock within the top right corner of your shell. while sleep 1;do tput sc;tput cup 0 $(($(tput cols)-25));date;tput rc;done &
INTRODUCTION This article aims to explain the various steps required in configuring Wireless connectivity within Backtrack 4 r2. It is also worth mentioning that as Backtrack is based upon Ubuntu/Debian you may find steps and solutions within this article useful when faced with other Ubuntu/Debian based wireless issues. MY SETUP Backtrack installation consists of a … Read more
In order to disable IP Routing Mode on Windows 2008 locate the following registry key (see below) and change IPEnableRouter from 1 to 0. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters To confirm that IP Routing is disabled run the following command : C:\Documents and Settings\admin>ipconfig /all | findstr “Routing” IP Routing Enabled. . . . . . . . : … Read more
When running the command iptables -vL you may find that : the output displays slowly. the output (appears) to have hung. You can further see what IPtables is doing via running iptables -vL. From this you will most likely see iptables trying to run a reverse DNS lookup (and failing). Solution Due to IPtables trying to … Read more
This article will show you how to load your Word 2007 style sets into Outlook 2007. Styles (also known as tags) are previously saved styling formats. These styles are then applied to text to so they adopt the desired formatting standard. The use of styles saves both time and ensures consistency through your documents. Steps … Read more