Logbook of Captain Emiliano Bruni

In the December issue of Linux Pro find the fifth and final installment of my series of articles on the Captive Portal.

In this issue, the captive portal so far he is enriched by a centralized authentication server via RADIUS.

It also added to the prototype of a mode and a manual logout from the system automatically once after a timeout can be set when the visitor did not traffic.

Finally, thanks to the RADIUS server, we introduce a method of accounting of accesses to identify events login / logout users, the traffic, because of logging and other information.

As I also say, in conclusion of the article, the journey, which began in August in the construction of an access controller usable as a basis for any sort of extension and customization has led, in the months to learn other interesting things like how to change the IP packets by ARP Spoofing, learn to build from scratch a DNS server, and finally, in the latter number, install, question and interact with a RADIUS server.

So, ultimately, besides having understood how it works and how to build a captive portal, I hope I did learn, to my readers, many small and big tricks that maybe you can reuse in other contexts.

In this second episode of guardianship on Captive Portal, exit to the September 2008 of the monthly "Linux Pro" entitled "A router to universal access" any IP "I show how to create a gateway with a Linux box that allows l ' access to the network by a client regardless of the TCP / IP.

Anyway, do not obviously explain the obvious, namely that if your computer has a DHCP client turned on then all you need is a DHCP server on the Linux box to send a proper configuration in order for the user to navigate.

No, on the contrary, if the gateway's IP, for example, 10.0.0.1/24, I explain how it is possible to navigate a user even if it has the IP, for example, 5.6.7.8/16 gateway with 5.6.223.154.

All of this is shown through the creation and explanation of a simple script in Perl, of about sixty lines using a hacking technique called ARP spoofing, achieves the above.

I write in this number, I learned many things, I hope to convey a bit 'also to my readers

Sometimes on this blog I write about some stupid things and then inevitably forget important things like that this month is at newsstands with an article in Linux Pro really interesting. The article deals with the captive portal and is the first in a series of tutorials that will guide the reader, step by step in building a complete and functional system of management of a captive portal

Obviously the author is none other but the creator of the portal already wifi.micso.it, decorated with the Oscar nominations and three Grammy awards, as well as the multifaceted and multiform human being untrustworthy sort, in a nutshell ... myself.

I would advise you, without any malice, to go immediately to your newsstand to buy this newspaper of confidence, to understand and reconstruct the features of a captive portal on your PC trust.

And how would a friend: