[atlas] Error: Only anchors may be targeted.

On Mon, Jun 25, 2018 at 03:10:07PM +0200,
 Guido Iaquinti <guido.iaquinti at gmail.com> wrote 
 a message of 16 lines which said:

> I was discussing the above with a few friends and I understand that
> there might be some security related concerns but I think with a
> proper user policy and technical implementation they could be easily mitigated:

It is not purely technical. There is also an ethics problem as well
<https://labs.ripe.net/Members/kistel/ethics-of-ripe-atlas-measurements>
Basically, in places where you can have trouble for your Internet
activity, HTTP is often actually monitored (which is not the case with
ICMP and DNS).

> - allow HTTP(s) queries only on '/' and without any args

> - global rate limit on Atlas based on domain. Example: top 1000
>   domains can get 100 req/s globally while everything else is
>   throttled to 10 req/s (optional: site owners can override this
>   value via `robots.txt` or something similar)

It solves the "RIPE Atlas probes as a dDoS botnet" issue (at the price
of some complexity for Atlas) but not the ethical one. Imagine people
asking a saudi probe to access <https://femen.org/>