Posted in BSD FreeBSD How to

How to harden SSH access to a FreeBSD 11.2 box

Recently I was requested to suggest some hardening advices about SSH access to *nix boxes. Now, I like to write down a short guide on this topic. Let’s take a fresh installed FreeBSD server (11.2-RELEASE-p7…

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Posted in How to

Yet another post about IPv4 subnetting (non contiguous bits version)

During my current (fulfilling and rewarding actually) teaching activity, I’m seeing amazed faces when I talk about non-contiguous subnet masks. I know, that’s a topic with some historic flavour, nevertheless still good for reasoning and practicing. This…

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Posted in How to

How to restore a little decorum to your SMTP: please RTFM

So, you want to run your own mail server, while someone else holds your beer? Ok, listen, do yourself a favor: please, RTFM, or carefully follow these steps. assign an IP to your SMTP; make…

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Posted in FreeBSD How to

How to setup a DNSViz looking glass on FreeBSD 10.2

I’m sure you already know what DNSViz is, but for those two or three of you over there who still don’t, here is a summary: “DNSViz is a tool for visualizing the status of a…

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Posted in How to

Welcome to the real cloud

Just another cloud presentation (AWS based):

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Posted in GNU/Linux How to Ubuntu

How to run Zimbra Collaboration 8.6.0 GA on AWS

Not really an how to. If you want to run Zimbra Collaboration Open source edition 8.6.0 GA on an Amazon Web Services ec2 instance you just have to launch my ami available in Community AMIs. It’s…

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Posted in BSD FreeBSD How to

How to install KEA on FreeBSD 10.1

KEA is a new open source DHCPv4/DHCPv6 server being developed by Internet Systems Consortium. It’s supposed to become a very high-performance, extensible DHCP server engine for use by enterprises and service providers. Why a new…

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Posted in CentOS GNU/Linux How to Pubblica Amministrazione

How to install CKAN on CentOS 7 using Docker images

CKAN is a powerful data management system that makes data accessible – by providing tools to streamline publishing, sharing, finding and using data. CKAN is aimed at data publishers (national and regional governments, companies and…

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Posted in BSD FreeBSD How to

How to run master NSD on FreeBSD 10.0

[Some of you asked for an updated version of the NSD how to. Here it is, enjoy.] NSD  is  a  complete  implementation of an authoritative DNS nameserver written and maintained by NLnet Labs. Authoritative and not…

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Posted in GNU/Linux How to Ubuntu

How to make a TCP connection flow through Tor on Ubuntu 13.10 with socat

Maybe you’re concerned about anonymity or you just want know and experiment how actually things work. You can find a lot of documentation about such topics on the Internet. This is my take on a…

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