November 2022 - ripe-atlas - mailman.ripe.net

Can't register software probe
by roberto.lucignani＠caleidos.it 15 Nov '22

15 Nov '22

Hi all, I download the probe software image from: https://github.com/Jamesits/docker-ripe-atlas Changed the RSA key in /var/atlas-probe/etc generating a new one with: ssh-keygen -t rsa -b 4096 Trying to register the software probe at: https://atlas.ripe.net/apply/swprobe/ I get the following error: * The public key does not match our regular expression for this key type I tried generating other keys, but I always get the same error. Regards, Roberto -- This message contains confidential information and is intended only for the individual named. If you are not the named addressee, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this message by mistake and delete this message from your system. E-mail transmission cannot be guaranteed to be secure or error-free, because information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept liability for any errors or omissions in the contents of this message that arise as a result of e-mail transmission.

2 1

IPv6 and the V5 probe
by Eric Kochen 14 Nov '22

14 Nov '22

Hi, My V5 is up and running. For some reason public IPv6 is not detected or not working, yet. I have a dual-stack connection and IPv6 is a DHCPv6 Prefix Delegation configuration. Does this work with the V5 probe? Anything I need to configure at the Atlas website maybe?

2 3

RIPE Atlas SMTP Measurement
by ripe.net＠toppas.net 11 Nov '22

11 Nov '22

Hello, i'd like to start a discussion about having a RIPE Atlas SMTP measurements. First of all: yes, i know there's a big obstacle for such a measurement type. A lot of probes are deployed using enduser internet-connections like dsl, cable, etc. with dynamic/eyeball IP addresses. Those IP spaces are usually blocked by SMTP servers as approach to reduce spam mails. For Example: by using blocklists like Spamhaus PBL. So a proper SMTP measurement wouldn't work. BUT we could have an easy way for RIPE Atlas probe hosters to signalize, that their probe is eligible for SMTP measurements: Step 1: enable "Simple DNS Entry" Step 2: create a matching reverse DNS record for the probes IP address Everybody who is able so configure a reverse DNS record for his probes IP address, is most likely using a non-dynamic/non-home ip address space e.g. a datacenter or office network. If an ISP provides the option for his customers to configure a reverse DNS record, it's most likely a "business-customer" subnet which can be used to run mailservers. After Step 1+2 are done, the RIPE Atlas platform would easily be able to verify if forward-confirmed reverse DNS is successful, and if so, automatically enable that probe for SMTP measurements. Alternatively: probe hosters choose their own Forward-confirmed reverse DNS name and submit it on the RIPE Atlas website. Also: if we would have STMP measurements, forward-confirmed reverse DNS should be mandatory for anchors, or is it already? Why should we have SMTP measurements? Besides general reachability checks, we could also evaluate SMTP response codes. But the most important thing for me is this: the SMTP protocol is old. Very old. From a security point of view, it's absolutely outdated. Most security features have been added years after the initial RfC. Thus, those security features are optional. Mandatory SMTP encryption is not provided by the SMTP RfC. So both sides have to signalize, that they are capable of encryption using the STARTTLS command. An attacker (man-in-the-middle) can perform a downgrade attack by suppressing the STARTTLS command. So both sides are forced to fallback and communicate unencrypted. RIPE Atlas would be a really good tool to identify such attacks, by monitor/measure the (enhanced) status codes of a target. But there's more! I see a two-sided model here. Either use the RIPE Atlas SMTP measurements to monitor/measure your own mailserver by alot of other RIPE probes out there, OR probe hosters could run SMTP measurements originating from their own probe to find out, if their own IP address is currently blocked by other mailservers. What do you think? BR, Simon

5 26

placing a probe into wireless networks (not terrestrial)
by Kurt Kayser 11 Nov '22

11 Nov '22

Dear Atlas-ml-followers, this a summary of a brief discussion I had with Michel Stam during RIPE85. We believe there might be a great value putting up a public Internet monitoring probe (vantage point) into low earth orbit satellite systems, such as Starlink. Monitoring from terrestrial end-points delivers high variances, due to frequent sat-changes. If we could put up an ATLAS-probe (be it SW - which is probably easier than HW) into a specific plane, we could add interesting tests and try to interpret the values depending on position over specific areas, atmospheric influences, solar influences as well as other effects that would change signal patterns. I would be offering support to try to establish such a probe and help to setup a project defition. Any thoughts or feedback to this idea? Best regards Kurt Kayser

3 3

V5 probes
by Ernst J. Oud 10 Nov '22

10 Nov '22

L.S. Is there a sneak preview of the V5 probes available somewhere? Regards, Ernst J. Oud

8 14

Credit sponsorship
by Finn Holler 07 Nov '22

07 Nov '22

Hello, I am looking for probe operators, with a credit surplus, who would want to transfer some credits to my RIPE Atlas account (email: finn.holler(a)student.uni-tuebingen.de). These credits are required for me to interact with the measurement API, which I want to explore and ideally use, to implement a service indicating the connectivity status of various internet services to tenants of local student housing. The plan is to register some probes, so this credit sponsorship is only necessary for initial trials. Best, -Finn

5 7