We feature technical articles across the entire IT spectrum - Networking, security, operating systems, cloud, and programming.

DOS – Boot Files

In order to get a USB disk to boot into a DOS prompt you will need to have the required boot files. These files can be found here.

ESXi – How to enable SSH

To enable SSH you will need to do the following, In the ESXi console press ALT+F1 Type unsupported(as you type you will not see anything on the screen) Enter the root password Edit the file /etc/inetd.conf and find the line which has #ssh and remove the #. Then Type /sbin/services.sh restart

ESXi White Box – HP DL140

White Box is a term used to describe a hardware spec/platform that has been used outside of the Vendors recommendations. In order to run VMware ESXi on a platform outside of the Vendors HCL (Hardware Compatibility List) I used various Whitebox resources to run ESXi on the below, HP Proliant DL140 G1 (2x 3Ghz Xeons … Read more

Windows – Installing exe shows MSI dialog Box

Issue When trying to install an .exe which contained an msi, you are just prompted with the MSI help dialog box.  Resolution Goto ‘Start / Run‘ and type CMD Once in the CLI type ‘echo %temp%‘ to find your default temp folders. Remove as much as you can from your temp folder. Try to run … Read more

Netscreen – NSRP Basic Setup

Below shows you how to configure basic NSRP cluster, prior to below you would of needed to configure your interfaces. Node A set nsrp rto-mirror syncset nsrp monitor interface eth1set nsrp monitor interface eth3set nsrp cluster id 1set nsrp vsd-group id 0 priority 100save Node B set nsrp rto-mirror syncset nsrp monitor interface eth1set nsrp … Read more

Netscreen – Basic Config

Below is how to set up the basic configuration on a Netscreen firewall.Also bear in mind that if you are setting up a NSRP cluster, be sure to set the management IP to a different IP to the management interface. set hostname myfirewallset ssh enable set admin name rootset admin password mypasswordset admin manager-ip 192.168.1.1 … Read more

Windows – What are Ports needed for Active Directory ?

In order to add a machine to the Active Directory (Domain) or to allow you machine to speak with a Domain Controller you will need to open the following ports, LDAP         – TCP+UDP/389DNS          – UDP/53SMB          – UDP/138SMB          – TCP/445 Kerberos   – UDP/88

Check Point – Installing an HFA

HFA stands for Hot fix accumulator. Which is a bit like a Windows Service Pack but for your Check Point Firewall.The documentation from the Check Point site on how to install these, is very good, and also contains the IPSO installation instructions. Below are the basic instructions on how to install the latest HFA 30 … Read more

Common Sed Examples

Below are some of the common uses and commands for sed that I have come across over the years, Find and Replace sed -i ‘s|arp|/sbin/arp|g’ /etc/init.d/proxyarp Find and Delete sed -e ‘/^$/d’ file.txt Remove Multiple words This will remove word, word1, or word2 from the file input.txt sed ‘s/word\|word1\|word2//g’ input.txt Change the first instance on … Read more