Home Server icon   Home Server (3) – First steps configuring HP Microserver Gen8

Third post of the Home Server series in which I explain how I built my own server.
Visit the first post for details about the objectives of the project.

Maybe you have decided to have your own server and already you are owner of any model as HP Microserver Gen8. Surely there are many more to be done, but theseRead more

F5 BIG-IP icon   F5 BIGIP – Name based reverse proxy (LTM policies)

F5 BIGIP is a very powerful and versatile product that can be used for several purposed. I started using it as a load balancer. Then I used it to replace the previous SSL VPN portal (and it works perfectly).

Some time ago I decided to start using it as reverse proxy (it was time for my old Microsoft TMG to … Read more

Windows   Windows – Configure scheduled task every minute

This time a simple as well as important post. Have you tried to run a scheduled task every minute?

When editing the trigger of a task schedule, there is a section in which the “Repeat task every” parameter can be set, and you have probably noticed that by default only the values “5 minutes, 10 minutes, 15 minutes, 30 … Read more

Security   Security – Create self signed SAN certificate with OpenSSL

This post explains how to generate self signed certificates with SAN – Subject Alternative Names using openssl. It is a common but not very funny task, only a minute is needed when using this method.

The example below generates a certificate with two SubAltNames: mydomain.com and www.mydomain.com

Create openssl configuration file

Create configuration file for openssh (In a Linux … Read more

Linux   Linux – TCP listener daemon with tcpserver

To configure passive checks in Nagios/icinga I use a tcp listener daemon that launches a script (See Nagios – Using passive checks without agent)
Tried to use inetd superserver daemon, but in the last versions, i have not been able to make it work correctly (See last update in my post: Linux – cannot found / missing inetd.conf)Read more

Linux   Linux – Create multiboot CD combining multiple ISO images

This post shows the steps to create a multiboot cd with multiple Linux distributions or tools.

For example, I created a recovery / disaster case cd with the following tools:
Clonezilla (to clone/recover disks and partitions)
Gparted (partition editior with GUI)
Trinity Rescue Kit (linux distribution for recovery and repair operations on Windows machines)

The Multicd Read more

F5 BIG-IP icon   F5 BIG-IP – Apply SNAT to client subnet or IP

In certain scenarios it can be interesting or necessary to apply SNAT only to certain client IPs when accesing a virtual server to  f.e. avoid assymetric routes, when the server gateway is not the F5… (take a look at this link for more examples).

These are the steps (im using BIG IP v13)…

Create a SNAT pool

I prefer the … Read more

Raspberry icon   Raspberry – Raspbian installation and initial setup

Some time ago I started reading documentation about Raspberry. Nothing related to my job but, as a hobby/challenge, I decided to buy one and start a project in future posts I will talk about…

Also owner of a Raspberry? Follow this minitutorial to perform the basic installation of Raspbian OS with remote access enabled via SSH using WiFi connection.… Read more

POWERSHELL   Powershell – Excel reports automation (I)

Powershell can be very useful to extract data from our systems.
Excel can be very useful to show that data in a friendly way.
Powershell + Excel = Automatic generation of useful reports

These are the basic powershell sentences and functions needed to start generating our Excel reports using Powershell scripts:

Excel COM object

It is neccesary to reference a … Read more