Alejandro Olivan Alvarez - Yet another IT blog...

The return of the Linux router... (from pfSense to Debian, part 8: IPSec VPN betwen Cisco and Debian)

Hi again... yet another IT article on the way. Today I'm going to summarize on this article all my config snippets and notes that I gathered as I struggled to setup VPN tunnels from CISCO routers against a Debian virtual routers running StrongSwan. To my taste, CISCO IPsec VPN, when

networking

The return of the Linux router... (from pfSense to Debian, part 7: OpenVPN without PKI, script+file auth setup)

Hello World ... back again... but it is more than three months since my last article!!! 2018 was very very hard to finish, with dad passing away :-( , being in the middle of my degree ending project and with lots of projects opened at job, the level of stress bring me

networking

The return of the Linux router... (from pfSense to Debian, part 6: Suricata IDS)

Hi again mighty Planet! Today I'm going to add yet another article on the series about Debian based Router/firewall systems (or how my weekends are truly weekends since I switched from GUI based routers back to plain old Linux/Debian routers where CISCO hardware is not an option) This

Debian

The return of the Linux router... (from pfSense to Debian, part 5: Enabling VoIP)

Hi again world ... two months without writing a single article... my notes are piling up ... no holidays, commited to my CFGS final project, now CCNP Route joins the party ... I really need a breathe... But here we are!!! Today I'm going to share a very short one! but one that

networking

The return of the Linux router... (from pfSense to Debian, part 4: from CARP to VRRP)

Hi again mighty World! So... lot of things going on, and little time to my blog, as more and more stuff piles up as article candidate. After some struggle, now I got my v6 CCNA Routing and Switching... CCNP starts after summer, and I'm very commited onto learning Angular JS

networking

The return of the Linux router... (from pfSense to Debian, part 3: OpenVPN P2P mode setup)

Hey, hi again people... let's continue with the series of articles I have in mind, just as I have (just this week!) removed the last pfSense appliance at job and have it replaced with a Linux/Debian one. On this article I'm going to show a proposal, based on my

Debian

The return of the Linux router... (from pfSense to Debian, part 2: OpenVPN bridged/tap mode setup)

So .... how a long time away ... I have in my TODO to update Ghost blog platform... it is now at 0.11.13!!! Ok, exams are passed, CCNA at the networking academy is over, now summer time comes, so finally I'll be able to upload all my pending IT notes

networking

The return of the Linux router... (from pfSense to Debian, part 1: The plan)

Hi again IT World... I've been quite busy lately... too much for comfort, and too often because of network issues (at the best). It has took me almost two months of work to regain our desired levels of stability and tranquilty, since we underwent the upgrade of our hybrid cloud

CISCO

PacketTracer 7.1.1 on Debian Buster

Hello again world! So... new year is here with plenty of activity... got finally a week of vacation to regroup and reorganize after my exams and having finally completed at job the core infrastructure migration. Got a lot of new experiences (and not always necessarilly good) with plenty of new

pfSense

Setting a virtual pfSense router at OVH.

Hi again world! It is almost four months since my last article... way too long time... I sincerely didn't expected the return to my studies at IOC, toghether with the after-summer starting projects at work would be so overwheelming to me.... but that's exactly the case. The good point on

CISCO

PROXMOX & OpenMediaVault 802.3ad against CISCO 3560g

Hi again people! This times of summer peace and tranquility are ideal to take the time to carefully rework parked labs and tests, and, one of the ones I wanted to solve once and for ever (since I live with similar production scenarios) is a one about setting up interface

monitoring

Monitoring CISCO ACLs with ELK stack 5.4 (part4)

Hi again world! Summer is reaching its peak here at the Spanish coast... so less time to write IT articles and more time to outdoor fun ;-) Anyhow, let's end up this series of articles about setting up ELK stack and monitor CISCO ACLs. This one is the last, and

monitoring

Monitoring CISCO ACLs with ELK stack 5.4 (part3)

Hi again world! So, let's continue this series of articles about setting up a little, sigle server, all-in-one, ELK environment to draw nice dashboards about our CISCO labs. In this third article I'm going to dump my notes, and configuration for Logstash. I'll briefly describe the installation and focus on

monitoring

Monitoring CISCO ACLs with ELK stack 5.4 (part2)

Hi again people! In this second article (visit here part1) about ELK setup on Linux Debian to analyze CISCO logs (ACLs and/or PIX/ASA) I will keep giving shape to the notes I took during the actual setup. It is very useful to me to learn and consolidate knoledge,

CISCO

Monitoring CISCO ACLs with ELK stack 5.4 (part1)

Hi again world! After finishing my exams, I've got finally time these last days for playing with a pair of things I got pending for some time... By one side, having passed almost two years since I did my first labs with ELK stack, and later successfully deploying it at

CISCO

CISCO CSR1000 on ORACLE VirtualBox 5.1

Hi people! This article was in my sketchbook for several weeks right now. For me, finding that I could run XVR IOS CSR1000 virtual router over VirtualBox 5.1 has been a almots a milestone. To my taste, CISCO tends to be quite hostile when it comes to allow usage

networking

Getting started with BSD Router Project

Hi again guys. After a few weeks of playing with CISCO CSR1000 VMs on VirtualBox (I'm thinking on doing a post on how to install this CISCO router on current VirtualBox 5.1) I realized that those CISCO Virtual routers are far too heavy-weight to just make some labs. CSR1000

Ultra light VM just for testing: ttyLinux!!!

Hi people! Have you ever tried to testing you own Virtualization cluster on top of a virtualization platform? If you did, yo may know how bad it turns everything, after successfully created your cluster of hypervisor nodes, when it comes to create a VM to test. Even a barely empty

networking

Securing your Cisco CME Labs from Toll Fraud.

Hi again World! I'm quite busy in the last weeks (and I expect to be so for a pair of months) but even so, as I was a victim of toll fraud while plying with my CCNA Voice labs, I though I had to get time anyhow to share my

CISCO

OVH Dyn DNS service setup with CISCO 2800 series

Hi again people! Today I'd like to talk a little bit about my favorite ISP, and how easy and effective is to use their Dyn DNS service with any CISCO IOS driven ISR 2800 series (and very surely the vary same is valid to most L3 IOS driven devices). About

Debian

Ghost Blog 0.11.3 and upwards on Debian Jessie

Hi again... This time, for the first time, I'm gonna talk about Ghost. Ghost, is a blog platform, written in NodeJS, that has the aim to provide a light, themeable, featured and yet easy to use blog platform. Unlike Wordpress, which evolved to be a full featured CMS, Ghost sticks

networking

ADSL indirecto de Jazztel con CISCO 2800 series.

Muy buenas... De entrada, vaya por delante que en tanto el objeto de este artículo es muy específico: en cuanto al operador ISP refereido (Jazztel), a España, a una tecnología (ADSL2+) que debiera ser obsoleta (pero que en España sigue siendo amplia), y aún más concretamente a la modalidad de

development

OpenCobolIDE on Debian Stretch

Hi again world! Today I'm gonna post a quick post on how to set up a basic COBOL learning environment on Debian Stretch. I've been always interested in COBOL, and during Christmas time I started reading a ebook/course about learning COBOL. I didn't had time to finish it (but

CISCO

CISCO PacketTracer 7 on Debian Stretch.

UPDATE Jan/2018: As netAcad released PacketTracer 7.1.1 for new CCNA courses, I have dealt with making it to run on Debian BUster (but, almost sure it works also for Stretch)... so keep an eye on article PacketTracer 7.1.1 on Debian Buster Hi again people. I've

Debian

Setting ejjaberd on Debian Jessie

Hi everybody! In the last few weeks I've been immersed in, paradoxically, Debian server setups, but not only at work, but also as part of some funny classes at Intitut Obert de Catalunya that deal about Internet Services. Among several typical examples and exercices, there was a one that, sincerely,