Ian Bicking: the old part of his blog

Centralized vs decentralized comment 000

SSH requires OS level user accounts. That's just not possible in many situations.

Comment on Re: Centralized vs. Decentralized 2
by Stephen

Comments:

Not true. Nothing in the SSH protocol requires OS-level accounts.

Admittedly implementations of it that don't require OS-level accounts are rare, but they exist. For instance, Canonical provides SFTP space for Bazaar archives (and soon Bazaar-NG branches) for anyone with a Launchpad (https://launchpad.net/) account. These are then mirrored to the world via HTTP.

We implement this SFTP server using Twisted's Conch SSH library, and I can assure you we don't create OS-level accounts for every Launchpad user :) ... it was actually surprisingly easy to use Conch for this.

# Andrew