Posts by 'Rick van Rein' – Page 2

architecture

Mail Routing 2: Doing SPF Perfectly

SPF is the technology that assures that mail only arrives from authentic senders. One problem remains that slows down its introduction as a hard filter, and that is email forwarding. This article nails the integration of SPF with forwarding.

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Hosting

Mail Routing 1: Doing it Well and Not-So-Well

Mail is severely hampered by spam, as we all know. Interestingly, some spam prevention tactics are applied so softly that they work against a reliable mail system. Here is a tale from the crypt.

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TLS

Dissecting TLS for Operational Flexibility

The TLS protocol is usually considered as a black box that somehow bestows security. But like any other protocol, it is a sequence of bits and bytes. This article explains how a bit more depth about the protocol is helpful to understand how it can be split into two dramatically different components; and how this can be incredibly useful from an operational perspective.

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Privacy

Comparing the privacy of HTTP and LDAP

In several places of the InternetWide Architecture, we use LDAP as our data protocol — because it is the most refined standard protocol for digging around in data. What we haven't yet discussed is how its privacy compares to, say, HTTP.

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architecture

Using SASL with HTTP, Mail and LDAP in Nginx

All our work on identity must somehow end up benefiting applications. One of most interesting bits of software to do this is a frontend proxy. As so often, we find a few parts missing to complete our vision of a better-unified Internet.

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