Sometimes the Joomla site owners get a bit paranoic after a time, due to lot of hype about site security. Basically is nothing wrong with, a good site security is based on keeping your accounts secure. But what about when you are hired to do something in a Joomla site and you got ALL access (including FTP and database access) but you discover, that the Joomla account you received is only an Administrator. You can do a lot as an Administrator - but often not enough! Don't tell me, that this never happened to you - unless you are a Joomla rookie. What you can do?
Despite claims to the contrary Joomla 1.5 does have an ACL system. It may be rudimentary but when fully understood can be very useful.
ACL stands for access control levels. It refers to who has permission to do what on the website, including read, create, edit, delete, or log in, among other permissions.
Many think of ACL as relating to the front end of a website only. For example, when I log into the website, what articles do I have available to me? And if someone else logs into the site, do they see the same articles, or do they see different ones?
Also known as two step-authentication or two-step verification, two-factor authentication is an additional security option for online accounts to help keep them safe.
By default, across all Joomla versions from Joomla 1.0, through Joomla 1.5, Joomla 1.6 to the Joomla 1.7 the basic structure of default user groups is unchanged. The users are generally sorted in 3 main categories, the unregistered/not logged in users, the registered users with frontend only access and the backend users. The exact naming of these main groups are varying across the different Joomla versions, but the default end level groups are the same. The groups and their core permissions are as follows:
You just upgraded your Joomla site to latest Joomla 2.5 or 3.* and your regular, registered users cannot login to the frontend, seeing this error:
It's annoying... your own Joomla site don't let you log in in the backend, and you see the above error message... What's happened?
Humm, there are couple of things you can do. Contrary of the lots of "smart" blog entries on the subject out there (last search revealed about 2 million hits) in most of the cases, regardless to Joomla version the cause is simple:
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