[atlas] Open ports?

Hi Anthony,

Am 14.04.2016 um 19:20 schrieb Estelmann, Christian:
> Am 13.04.2016 um 23:37 schrieb Anthony:
>> Hello,
>> I received my probe today and I had to disable the firewall for my box
>> that appears connected to the site. I reactivated and after all the work
>> area, but I would have liked to know what need had to open?

as far as I understand the probe just needs to be able to establish
_outgoing_ connections.

When I connected the probe to my private DSL connection (a home router
that does some NAT/firewalling) I did _not_ have to change anything in
my setup.


So there is usually no need to disable a Firewall as long as the
firewall/NAT setup does allow _outgoing_ connections (at least for the
probe).

As Christian already linked the FAQ your probe should be allowed to:

(1) establish outgoing TCP connections
(2) establish outgoing UDP connections
(3) send/receive ICMP packets

So you do _not_ have to open ports for "incoming" connections / forward
ports on your NAT. Just do not block outgoing connections.


Also the probe can take some time before the website will list it as
"connected". I just connected it and when I looked at
<https://atlas.ripe.net/probes/> the next day (after registering the
probe) it was working fine.



>
> Hi,
>
> the FAQ says
> "The absolute minimum set is DHCP, DNS and outgoing TCP port 443 (HTTPS)
> in order to allow the probe to connect to the network. However, this
> in itself is not enough to do measurements, which is the entire focus
> of RIPE Atlas, so you should also allow ICMP, UDP (DNS + traceroute),
> TCP for traceroute and HTTP(S)."
>
(https://atlas.ripe.net/about/faq/#so-which-services-do-i-need-for-my-probe-to-work)
>
> Traceroute is port 33434 (when I am remembering right).

Depending on how the probe does traceroute this may not be the only
method. Depending on the implementation (AFAIK!) this might be different
as different protocols might be used in a combination.

>
> Hope that helps.
>
> Greetings,
> Christian



Best regards,
Andreas


PS at Christian: Sorry for the spam. In my first attempt to send the email
I just replied to you and not to the list. :-/


-- 
Andreas Boesen, BelWü-Koordination, Universität Stuttgart
Industriestr. 28, 70565 Stuttgart
Tel. 0711/685-65750 - Fax 0711/6788363
boesen at belwue.de - http://www.belwue.de

~cd in and find out



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