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Network Topology Visualization – Example of Using LLDP Neighborships, NETCONF and little Python/Javascript

Ok, this is a continuation of two streams of articles here, first my recent NETCONF tutorial here, and secondly my very old project (back then in Java) of visualization of […]

HP Networking/Comware NETCONF interface quick tutorial (using python’s ncclient and pyhpecw7)

So let’s learn about NETCONF, but first a bit of history and perspective. Everyone in networking business at least once heard about SNMP (Simple Network Management Protocol), which is the […]

[minipost] Protecting SSH on Mikrotik with 3-strike SSH ban using only firewall rules

After working with Mikrotik / RouterBoard routers for a long time, I recently needed to replace an aging old wifi router at my parents and the recent brand of very […]

Example of private VLAN isolation across Virtual and Physical servers using ESX/dvSwitch and HP Networking Comware switches

The target was simple, we have an internal cloud datacenter at work that provides users and customers both virtual machines and physical machines. Each machine has to network interface cards […]

HPE’s DCN / Nuage SDN – Part 3 – REST API introduction

REST-full API, the new trendy bandwagon of cloud automation and SDN due to its simplicity and universal compatibility. TI is essentially a http transfer protocol with JSON payload. And if […]

[minipost] Capturing bidirectional traffic of virtual machine (VMs) on vmWare ESX 6.x

Here I was getting a trouble with communication between an ESX virtual machine and the nearby switch (Nuage/DCN controller VM talking with a VTEP switch if someone is interested) and […]

HPE’s DCN / Nuage SDN – Part 2 – First Steps Creating Virtual/Overlay Customer Network

In the previous part 1, we have installed basic HPE DCN system on a group of ESXi hosts. But we didn’t actually done anything inside it, so lets fix this […]

HPE’s DCN / Nuage SDN – Part 1 – Introduction and LAB Installation Tutorial

Nuage Networks is a spinoff from Alcatel-Lucent (now under Nokia as they acquisition Alcatel recently) and also a name of software defined network (SDN) overlay solution for datacenters and direct […]

Tutorial for small Hadoop cloud cluster LAB using virtual machines and compiling/running first “Hello World” Map-Reduce example project

I had Hadoop experience now for more than a year, thanks to a great series of Cloud Computing courses on Coursera.org, now after ~6 months of running via several cloud […]

Ping on you! – Beta 2.0 is online

Nicer, more stable, AJAX/JSON enabled pingonyou.com and also preparations in background to introduce the 24/7 Monitoring feature. So here we are. First a bit of short history, if you have […]

[minipost]Quick LAB/config example for IPv6 BGP between HP Networking Comware v5 andCisco

A small lab showing basic configuration of BGP between Cisco and HP (Comware v5). This is just something small we deploying recently, there is nothing grand here, only a minor […]

Ping on You! – small weekend web/CGI project

After a few previous web programming endeavors (both here on networkgeekstuff.com with SDN programming and in real life job) I had a taste to develop “something” and since I am […]

[minipost] Windows partition editing with diskpart

This will really be a micro-post as I only want to document this for my benefit. This is a way how to change partition table for disks, or USB sticks. […]

Checkpoint Firewall CLI tool “dbedit” and quick lab examples

In this article, I am going to give you a quick guide how to run a single checkpoint FW as virtual machine quickly on your notebook and then super-quick introduction […]

Tutorial for creating first external SDN application for HP SDN VAN controller – Part 3/3: “Node Cutter” SDN application in perl with web interface

In this tutorial series, I will show you by example, how to build your first external REST API based SDN application for HP SDN VAN controller, with web interface for […]

Tutorial for creating first external SDN application for HP SDN VAN controller – Part 2/3: Influencing Flows via cURL commands

In this tutorial series, I will show you by example, how to build your first external REST API based SDN application for HP SDN VAN controller, with web interface for […]

Tutorial for creating first external SDN application for HP SDN VAN controller – Part 1/3: LAB creation and REST API introduction

In this tutorial series, I will show you by example, how to build your first external REST API based SDN application for HP SDN VAN controller, with web interface for […]

Tutorial: Email server for a small company – including IMAP for mobiles, SPF and DKIM

A few months back my wife started a small business. Of course I was the one to build the “IT stuff” here that included a website, some reservation system on […]

Latest technical articles:

7December 12, 2017
Network Topology Visualization – Example of Using LLDP Neighborships, NETCONF and little Python/Javascript

Ok, this is a continuation of two streams of articles here, first my recent NETCONF tutorial here, and secondly my very old project (back then in Java) of visualization of […]
4December 11, 2017
HP Networking/Comware NETCONF interface quick tutorial (using python’s ncclient and pyhpecw7)

So let’s learn about NETCONF, but first a bit of history and perspective. Everyone in networking business at least once heard about SNMP (Simple Network Management Protocol), which is the […]
0September 9, 2017
[minipost] Protecting SSH on Mikrotik with 3-strike SSH ban using only firewall rules

After working with Mikrotik / RouterBoard routers for a long time, I recently needed to replace an aging old wifi router at my parents and the recent brand of very […]
0May 26, 2017
Example of private VLAN isolation across Virtual and Physical servers using ESX/dvSwitch and HP Networking Comware switches

The target was simple, we have an internal cloud datacenter at work that provides users and customers both virtual machines and physical machines. Each machine has to network interface cards […]
0December 26, 2016
HPE’s DCN / Nuage SDN – Part 3 – REST API introduction

REST-full API, the new trendy bandwagon of cloud automation and SDN due to its simplicity and universal compatibility. TI is essentially a http transfer protocol with JSON payload. And if […]
0December 10, 2016
[minipost] Capturing bidirectional traffic of virtual machine (VMs) on vmWare ESX 6.x

Here I was getting a trouble with communication between an ESX virtual machine and the nearby switch (Nuage/DCN controller VM talking with a VTEP switch if someone is interested) and […]
5September 23, 2016
HPE’s DCN / Nuage SDN – Part 2 – First Steps Creating Virtual/Overlay Customer Network

In the previous part 1, we have installed basic HPE DCN system on a group of ESXi hosts. But we didn’t actually done anything inside it, so lets fix this […]
8August 1, 2016
HPE’s DCN / Nuage SDN – Part 1 – Introduction and LAB Installation Tutorial

Nuage Networks is a spinoff from Alcatel-Lucent (now under Nokia as they acquisition Alcatel recently) and also a name of software defined network (SDN) overlay solution for datacenters and direct […]
1June 12, 2016
Tutorial for small Hadoop cloud cluster LAB using virtual machines and compiling/running first “Hello World” Map-Reduce example project

I had Hadoop experience now for more than a year, thanks to a great series of Cloud Computing courses on Coursera.org, now after ~6 months of running via several cloud […]
0June 4, 2016
Ping on you! – Beta 2.0 is online

Nicer, more stable, AJAX/JSON enabled pingonyou.com and also preparations in background to introduce the 24/7 Monitoring feature. So here we are. First a bit of short history, if you have […]
3June 2, 2016
[minipost]Quick LAB/config example for IPv6 BGP between HP Networking Comware v5 andCisco

A small lab showing basic configuration of BGP between Cisco and HP (Comware v5). This is just something small we deploying recently, there is nothing grand here, only a minor […]
1March 28, 2016
Ping on You! – small weekend web/CGI project

After a few previous web programming endeavors (both here on networkgeekstuff.com with SDN programming and in real life job) I had a taste to develop “something” and since I am […]
0March 28, 2016
[minipost] Windows partition editing with diskpart

This will really be a micro-post as I only want to document this for my benefit. This is a way how to change partition table for disks, or USB sticks. […]
7February 27, 2016
Checkpoint Firewall CLI tool “dbedit” and quick lab examples

In this article, I am going to give you a quick guide how to run a single checkpoint FW as virtual machine quickly on your notebook and then super-quick introduction […]
2May 24, 2015
Tutorial for creating first external SDN application for HP SDN VAN controller – Part 3/3: “Node Cutter” SDN application in perl with web interface

In this tutorial series, I will show you by example, how to build your first external REST API based SDN application for HP SDN VAN controller, with web interface for […]
3May 23, 2015
Tutorial for creating first external SDN application for HP SDN VAN controller – Part 2/3: Influencing Flows via cURL commands

In this tutorial series, I will show you by example, how to build your first external REST API based SDN application for HP SDN VAN controller, with web interface for […]
4May 22, 2015
Tutorial for creating first external SDN application for HP SDN VAN controller – Part 1/3: LAB creation and REST API introduction

In this tutorial series, I will show you by example, how to build your first external REST API based SDN application for HP SDN VAN controller, with web interface for […]
0May 19, 2015
Tutorial: Email server for a small company – including IMAP for mobiles, SPF and DKIM

A few months back my wife started a small business. Of course I was the one to build the “IT stuff” here that included a website, some reservation system on […]
2February 2, 2015
Eycalyptus – cloud introduction and auto-scaling tutorial

In this article, I will show how to do a very simple auto-scaling system on eucalyptus cloud using the wonderful eucalyptus fast start image. Afterwards you will appreciate how easy […]
14June 10, 2014
Introduction and LAB tutorial of HP Helion Community Edition, the OpenStack based “cloud” system that can give you a personal cloud!

Hewlett-Packard (HP) is a long enterprise supporter of cloud technologies and early this year, they released publicly HP Helion Community Edition (CE). HP Helion is HP’s OpenStack based cloud system […]
0June 9, 2014
[minipost] Mikrotik/RouterBoard port-knocking example for firewall/NAT openings

The situation is very simple, you are away from home (imagine visiting a friend or being at work), but you desperately would like to access your internal LAN FTP/Samba/etc… , […]
1June 3, 2014
[minipost] How to fix MySQL lost table description from .frm files after emergency migration of /var/lib/mysql

In May 2014, networkgeekstuff.com got a small problem when the hosting BeagleBone Black went dead and the old Raspberry PI environment was on that point already used for another project. […]