Unused Vouchers shown as expired

legacysl

Hi all, was running 2.3.4 with a captive portal and vouchers of different time durations, 24 hours / 48 hours etc. Everything was working fine but unfortunate due to a power outage the config/install got corrupted and I had to to a fresh install and upload a backup of the config.

Since 2.4.0 was released I decided to to trial that. The same voucher rolls where generated with the restoration of the config but since they where unmarked as used it should not have been an issue.

Right now if I issue 10 vouchers at least 4 will come back as expired. I have upgraded to 2.4.2 and deleted the old rolls and generated new ones but the problem persists.

Is there a known issue with 2.4.0 and above regarding vouchers?

Thanks for the help.

Gertjan

Hi,

Do yo mean that when you create a new roll with for example 10 vouchers with a duration of 15 minutes, some of them are expired as soon as you create them ?

legacysl

Its for use in a public wifi zone and w use vouchers to limit guest bandwidth usage, I have created 3 rolls of 1440 mins / 2880 mins & 4320 mins respectively. Each roll has 1023 vouchers.

Say that we issue 10 guest one voucher each, 4-5 of them will get an error saying the voucher has expired.

Derelict

So take some and test them. What do you see? What does the portal auth log say?

Going to need more information. When I have used vouchers they worked fine.

Gertjan

Same here.
Created 5 rolls with 5 vouchers each - lasting 15 minutes each.
Tested them all using the "voucher test page"
They ware all valid, 15 minutes left.
When using one, it timed out after 15 min.

jimp

I have not seen this personally but I have seen someone say it happened when they made custom shorter keys and made the bit counts lower so they could have shorted voucher codes. At some point there isn’t enough randomness in the voucher codes and things get unpredictable, which is why the defaults are where they are.

legacysl

@Derelict:

So take some and test them. What do you see? What does the portal auth log say?

Going to need more information. When I have used vouchers they worked fine.

Log shows it as expired voucher no other information

legacysl

@jimp:

I have not seen this personally but I have seen someone say it happened when they made custom shorter keys and made the bit counts lower so they could have shorted voucher codes. At some point there isn’t enough randomness in the voucher codes and things get unpredictable, which is why the defaults are where they are.

This maybe a possibility as I have made the key shorter but this only started to happen on 2.4.2

legacysl

So now its throwing out a new problem. So when a user connects who’s token has expired the only get the confirmation page but it does not redirect or allow browsing.

Derelict

When I used them I used a 31-bit RSA key for shorter codes and never saw a problem. I was not issuing “lots” of vouchers though. Rolls of 100 usually.