An issue with having a FAQ for the failing USBs is that people will perform the procedure when it is not necessary. <div> </div><div>I think though that there should still be more debugging info for connections. On Monday, January 25, 2016, <<a href="mailto:sarah.wassermann@student.ulg.ac.be">sarah.wassermann@student.ulg.ac.be</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">+1 ! Sarah ----- Mail original ----- De: "Ondřej Caletka" <<a href="javascript:;" onclick="_e(event, 'cvml', 'Ondrej.Caletka@cesnet.cz')">Ondrej.Caletka@cesnet.cz</a>> À: <a href="javascript:;" onclick="_e(event, 'cvml', 'ripe-atlas@ripe.net')">ripe-atlas@ripe.net</a> Envoyé: Lundi 25 Janvier 2016 16:20:50 Objet: [atlas] An article/FAQ entry about probe troubleshooting Hi all, it seems that failing probes are getting more and more to be an issue, possibly due to USB flash drive failure. I think it would be nice if there was an article / FAQ entry with some official troubleshooting procedures, so we could just send a link to anybody complaining about non functional probe. Is there something like this on the roadmap? Perhaps we as the community could make something up: - how to check whether the port probe is connected to has proper IP and DNS parameters and is allowed to establish a SSH session to TCP port 443 in the Internet (beware of DPI firewalls that allow HTTPS but not SSH over 443) - how to check the LED status and the SOS list at the probe page (the current LED explanation in the FAQ is too techy and even power users like me still don't understand all presented states :) ) - how to diagnose USB flash drive failure, how to force reformatting the flash drive and how to replace it with a new one What do you think? Cheers, Ondřej Caletka CESNET </blockquote></div>