Paul Mackerras wrote:
> What functionality does diald provide that pppd's demand mode doesn't?
> (this is a genuine question)
I'm sure I'll miss something here:
Filtering based on traffic (port used) and manual control (override) of the
link are the two functions that spring to mind immediately. But there is
the ability to limit connections based on time of day and to set disconnects
to occur on 'pulses' (for metered access).
With filtering you have ability to set different lengths of idle time
depending on the type of traffic as well as the ability to completely ignore
selected packets for dialup but still maintain the link for them (or to
completely ignore such requests all together).
Diald is best used where on demand access is requested but access time is
metered. (Most European phone lines and long distance ISPs being the two
most common examples.) But I've also seen it used for company access
control.
An example: During business hours the connection is persistent, after hours
(probable overtime) the link will remain up if in use but will only be
brought up by http, ftp, smtp or pop3 traffic, late at night (when the
building should be locked up) all access is blocked.
Lourdes
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