[address-policy-wg] IXP peering lan reachability

On Tue, 24 Oct 2017, Nick Hilliard wrote:

(...)
> I'd politely suggest that this is an area that the RIPE NCC should not
> get involved in, especially from the point of view of implicitly issuing
> recommended practice by implying that there is a problem with doing
> this.  The IXP associations are better placed to gather consensus for
> creating best practices, and there is no general consensus in the IXP
> community on this issue.
>
> As regards using this as a metric for determining whether an ixp address
> assignment is being used for legitimate purposes, I'd suggest that this
> is of only marginal use at best.  By all means run a port scan to see if
> there is any obvious mis-use (e.g. services listening on www/smtp/etc),
> but the presence or absence of the route in the dfz doesn't mean
> anything one way or another.
>
> Nick
> CTO, INEX

+1.

I only have some doubts about running (regular) portscans.

Cheers,
Carlos