Draytek 2900 firmware bug

If I enable the Fraggle Attack countermeasure, the router resets a
part of itself every 60 seconds. Every 60 secs, it goes to the ISP's
DHCP server for a new IP.

I was wondering why PC/ANYWHERE would randomly stop working.

occassionally-(E-Mail Removed) wrote:
> If I enable the Fraggle Attack countermeasure, the router resets a
> part of itself every 60 seconds. Every 60 secs, it goes to the ISP's
> DHCP server for a new IP.
>
> I was wondering why PC/ANYWHERE would randomly stop working.

It sounds liake the firmware is corrupt. Do a hard reset and all may be
well.

Peter Crosland

"Peter Crosland" <(E-Mail Removed)> wrote

>> If I enable the Fraggle Attack countermeasure, the router resets a
>> part of itself every 60 seconds. Every 60 secs, it goes to the ISP's
>> DHCP server for a new IP.
>>
>> I was wondering why PC/ANYWHERE would randomly stop working.
>
>It sounds liake the firmware is corrupt. Do a hard reset and all may be
>well.

Have done - did a reset after every config change, just to make sure.
I disabled the anti-DoS options one by one, rebooting the router after
each change.

TBH I would be most suprised if each and every one of the many many
options was actually properly tested. I have been doing
hardware/software devt for 30 years and if they did that it would be a
first

I reckon they implement at least some of the DoS detectors by looking
at traffic patterns over the past 60 seconds, and they have a stray
pointer which craps on something...

Peter wrote:
> "Peter Crosland" <(E-Mail Removed)> wrote
>
>>> If I enable the Fraggle Attack countermeasure, the router resets a
>>> part of itself every 60 seconds. Every 60 secs, it goes to the ISP's
>>> DHCP server for a new IP.
>>>
>>> I was wondering why PC/ANYWHERE would randomly stop working.
>>
>> It sounds liake the firmware is corrupt. Do a hard reset and all may
>> be well.
>
> Have done - did a reset after every config change, just to make sure.
> I disabled the anti-DoS options one by one, rebooting the router after
> each change.
>
> TBH I would be most suprised if each and every one of the many many
> options was actually properly tested. I have been doing
> hardware/software devt for 30 years and if they did that it would be a
> first
>
> I reckon they implement at least some of the DoS detectors by looking
> at traffic patterns over the past 60 seconds, and they have a stray
> pointer which craps on something...

By hard reset I mean depressing the button on the rear of the unit for five
seconds or so as per the instruction booklet. This is differnt from the
reset you have been doing.

Peter Crosland