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Pedro J. Pérez
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Pedro J. Pérez

▓ Desarrollo backend  - 
 
Buenas,

He estado trabajando en Wormhole, un servicio para conectar servidores remotos de forma fácil y sin tener que abrir puertos de entrada en firewalls, configurar dispositivos VPN, etc.

Como muestra del sistema he creado una imagen Docker que incluye el cliente (SoftEther) y conecta automáticamente a tu red privada. Tan solo tienes que incluir los archivos de configuración que descargas desde Wormhole una vez te has dado de alta (gratis, no requiere tarjeta, solo nombre, password y correo).

https://github.com/pjperez/docker-wormhole

Y de bonus, dos contenedores Docker listos para usar de iPerf en modo cliente y servidor.

https://github.com/pjperez/docker-iperfserver
https://github.com/pjperez/docker-iperfclient

Se agradece feedback tanto de las imágenes Docker, como del proyecto en si.

Saludos
Pedro

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Seamless remote networking for developers. Securely connect all your cloud and bare metal servers from any provider in one network without effort or advanced networking knowledge. Join for free today and simplify your application's connectivity.
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Pedro J. Pérez
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Discussion  - 
 
Overlay encrypted networking for Docker
docker-wormhole - Wormhole Docker base image (Based on Ubuntu 14.04)
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Pedro J. Pérez

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Skeptical up to the very end
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Pedro J. Pérez

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For all the NetSec people out there, it is worth learning some scripting language to make your life easier. Take the effort as an investment, the return is impressive ;-)
 
I found a nice collection of examples to use python for pen-testing and more.
Found it quite stunning how easy it is with python to build "violent" scripts and learnt a lot reading them. 

https://github.com/shadow-box/Violent-Python-Examples
Contribute to Violent-Python-Examples development by creating an account on GitHub.
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Pedro J. Pérez

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True story...
 
Why buy Bitcoin?

#Bitcoin  
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Pedro J. Pérez
owner

Discussion  - 
 
One good reason to use again the printer :)

Cheat sheets for tcpdump, Wireshark, L2 & L3 protocols, technologies, ... A fantastic resource for netsec admins.
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Hello fellow sysads,

I've been working on an overlay network service and I'm happy to announce that I've released a proof of concept to add overlay networking to any of your Docker images.

This means you could potentially have all your application's microservices running on the same virtual network, meanwhile they're really located on different hosts. There's no more need to expose ports on Docker, NAT on the host or configure firewalls along the path. It just works, it's encrypted and based on open source software (SoftEther).

On the readme file you'll find also the link to my service (it has an unrestricted free tier, no CC required), but all the Docker images are released under MIT license (SoftEther keeps its license) and can be easily adapted for your own SoftEther deployment. I just offer a quick an easy way to get it running.

I would appreciate your feedback!

P.S.: I also have two ready-made images for iPerf client and server, just to showcase the capabilities of the system. Deploy each on a different host without direct network visibility and let the magic happen :)

https://github.com/pjperez/docker-iperfserver
https://github.com/pjperez/docker-iperfclient

#SDN #Networking #Docker #DevOps
docker-wormhole - Wormhole Docker base image (Based on Ubuntu 14.04)
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Pedro J. Pérez

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This is my new project, please try it & share with your circles if you like it!

It is a website monitoring service that will help you to keep track of your site's outages or modifications. Really useful to quickly react to any uptime issues and to early detect unwanted changes, e.g. if your site has been defaced, if someone is injecting malicious js code or if because of a DB error the prices at your shop show as $0 for every single product.

It is free for the basic service (HTTP or PING check every 15 minutes) that should suffice for many people out there. The other plans are so cheap that are a no-brainer if you need to monitor more than one site, smaller intervals, track changes or be sure your site is reachable from 4 different continents (and more coming).

The whole site works only on HTTPS and we don't store or even process your credit card as it's all done through Paypal.

If you ever need a monitoring system this is the one that will suit most of your needs for a ridiculous price.
 
We've just launched our global monitoring solution!

Our network covers 4 different continents, monitoring your sites 24x7 from New York, Chicago, San Francisco, Virginia, Amsterdam, Sydney and Hong Kong.

Sign up for free at https://www.datasnitch.co.uk 
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Pedro J. Pérez

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Wow... amazon.com is completely disregarding the initial TCP congestion window: it looks like their servers simply pumping as much data as they can, with an aggressive retransmit timeout as well...

See wireshark capture below: no client ACK's have been sent following the initial GET request for the homepage, and Amazon servers are just pumping bytes: ~76KB outstanding, and growing! 

I guess that's one way to make your site faster... =/
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Pedro J. Pérez
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Discussion  - 
 
Do you REALLY trust all the CAs that your browser trusts? have you ever checked that list?
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Pedro J. Pérez
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Discussion  - 
 
It's amazing how powerful nginx is. Do you, as NetSec Engineers or Admins, use nginx as a reverse proxy or as a load balancer? It could be interesting to read someone's opinion on nginx vs commercial solutions as F5 LTM, Alteon, Brocade or the good old Cisco CSS.
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Network Security Engineer
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Introduction
Hello everybody!

Welcome to my G+ profile page. I'm Pedro J. Pérez, a guy from Barcelona that lives in Reading.

My interests are all around technology. Mainly mobile phones, networking, infosec and some coding too :)

I work as a network security administrator but I also do some amateur-ish coding in my free time. So if I have you in my circles there's a 90% of probability that you're a coder or a network admin ;-) or write about one of those topics.

Feel free to browse around all my public information and don't forget to visit my pet projects (links in "Contributor to").
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PJ
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