ISP: HOWTO CREATE 10H accounts ??

I'm setting up an ISP here in Portugal,I would like to create several demo accounts with 10 hours limit of internet access (PPP). Which program should I use to limit the user access to a determined number of hours? (Not per day... but total).
I'm using Slackware Linux 2.0.31, PPPD version 2.3.1, USR modems on a Cyclades serial ports ctrl.

Thank you,

Sergio
aranae.telecom@usa.net
vilAsked:
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moxieCommented:
You can use the generic Shadow Password suite to limit usage to 1 day or so.  The format is as thus:

login:password:Days since Jan 1, 1970 that password was last changed:Days before password may be changed:Days before password is to expire that user is warned:Days after password expires that account is disabled:Days since Jan 1, 1970 that account is disabled:reserved field.

So, simply change the second to last field to the day before the following day, and the account will expire at that time.

                  - Mike
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vilAuthor Commented:
No... I was willing a 10 hour account... Not a single day.
Users should be able to use 10 hours in various days... No day limit.
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frowijnCommented:
You can install a internet time server, this is found on the linux cd's, the sunsite part, somewhere with daemons, networks and modems, there is a help file with it, adjust it, boot it, and then it's possible to install a minimum time of users exacly you want it to, i am now at my work, so i can't check on what dir. it maybe found, when i find this week, i shall place a second answer,

Oscar Frowijn
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vilAuthor Commented:
Adjusted points to 60
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brunocarpinteiroCommented:
Hello ! Check it on the Linux CD, somewhere near the modems, networks, deamons. Check it out... I'll check it on my CD..
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vilAuthor Commented:
Adjusted points to 70
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vilAuthor Commented:
Adjusted points to 80
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