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glossary:apop [2008/02/08 19:49] (current)
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 +====== What is APOP ======
 +
 +When your email clients connects to your mail server with a regular POP3 connection, your login and password are sent in plain text across the network (i.e. the internet). If someone wants to get at your password, he thus has a good chance of getting at it.
 +
 +APOP is an alternative to sending a login/password combination to the server. With APOP, your mail client will encrypt the timestamp sent by your server with a secret key and send back the encrypted version. The mail server can now tell whether you know that secret key. Since the time stamp changes each time a connection to the server is made, an intruder will not be able to use the encrypted timestamp to login himself.
 +
 +POPFile supports this login mechanism. See [[FAQ:APOPCompatible | the APOP FAQ entry]].
 +
 +
 +PS: The meaning of the 'A' in APOP remains a mystery. It is often expanded to 'Authenticated', but even without the use of APOP, POP3 is authenticated. Perhaps it should be expanded to 'really Authenticated'?
 
glossary/apop.txt · Last modified: 2008/02/08 19:49 (external edit)

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