[AusNOG] Draytek 130 blank username/passwords

Craig Askings craig at askings.com.au
Tue Jun 22 20:30:59 EST 2021

I don’t know what platform you are using to terminate your ppp sessions, but Juniper supports a lockout function. I’d be surprised if similar tricks can be done on a Cisco or Mikrotik. 


> On 22 Jun 2021, at 1:34 pm, Benjamin Ricardo <ben.ricardo at acs.com.au> wrote:
> Hi All,
> Looking for some shared experience here.
> We’ve had a complaint from our NBN wholesaler that our Draytek’s, which are configured in PPPoE passthrough, are sending blank authentications to their Radius server at a rate which is impacting their services.
> Our standard deployment since about 2010 has been to deploy an xDSL type modem in PPPoE passthrough and then use a router to send the authentication. Interestingly we’ve never had this complaint before…
> Our work around was that our wholesaler requires the credentials to be sent on a vlan so instead of using the Draytek to handle the vlan-ing we changed the router to insert the vlan (so the Draytek can be as noisy as it likes and it doesn’t affect them)
> I’m wondering if others have also had this experience with these devices… and what you did about it?
> Also, surely if the stupid Draytek is in pppoe passthrough it should know not to try to authenticate itself???
> Cheers,
> Ben
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