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2937 discussions

SBB partially reachable via IPv6
by Nico Schottelius 21 Oct '19

21 Oct '19

Hello everyone, if anyone from SBB reads the swinog ml: it's very cool that you added an AAAA record to sbb.ch. However it seems that only the HTTP, but not the HTTPS port is open via IPv6. Logs are attached below. Best regards from Glarus, Nico [20:31] diamond:~% curl -6 -I -v https://sbb.ch * Trying 2a00:4bc0:ffff:ffff::c296:f58e:443... * TCP_NODELAY set * Connected to sbb.ch (2a00:4bc0:ffff:ffff::c296:f58e) port 443 (#0) * ALPN, offering h2 * ALPN, offering http/1.1 * successfully set certificate verify locations: * CAfile: /etc/ssl/certs/ca-certificates.crt CApath: none * TLSv1.3 (OUT), TLS handshake, Client hello (1): ^C [20:33] diamond:~% curl -6 -I -v http://sbb.ch * Trying 2a00:4bc0:ffff:ffff::c296:f58e:80... * TCP_NODELAY set * Connected to sbb.ch (2a00:4bc0:ffff:ffff::c296:f58e) port 80 (#0) > HEAD / HTTP/1.1 > Host: sbb.ch > User-Agent: curl/7.66.0 > Accept: */* > * Mark bundle as not supporting multiuse < HTTP/1.1 301 Moved Permanently HTTP/1.1 301 Moved Permanently < Date: Sun, 20 Oct 2019 18:32:39 GMT Date: Sun, 20 Oct 2019 18:32:39 GMT < Server: Apache Server: Apache < Location: https://sbb.ch/ Location: https://sbb.ch/ < Content-Type: text/html; charset=iso-8859-1 Content-Type: text/html; charset=iso-8859-1 < * Connection #0 to host sbb.ch left intact -- Modern, affordable, Swiss Virtual Machines. Visit www.datacenterlight.ch

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[FYI] : BoF for NOGs and Interested Parties at RIPE 79 // 2019-10-14T16:00:00Z
by Arnold Nipper 28 Sep '19

28 Sep '19

https://ripe79.ripe.net/programme/meeting-plan/bof/ Cheers Arnold -- Arnold Nipper email: arnold(a)nipper.de mobile: +49 172 2650958

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Swiss Web Security Day 2019, October 30th Bern
by Michael Hausding 19 Sep '19

19 Sep '19

Dear list SWITCH is organising the 3rd Swiss Web Security Day, together with Swico and SISA. If you are interested in Web Security join us on October 30th in Bern. Registration and more Information about the event is available here: https://www.eventbrite.de/e/swiss-web-security-day-2019-tickets-65098353929 Hope to see you in Bern Michael ------------------------------------ Michael Hausding, Competence Lead DNS & Domain Abuse SWITCH-CERT Werdstrasse 2, P.O. Box, 8021 Zurich, Switzerland phone +41 44 268 15 77, incident phone +41 44 268 15 40 michael.hausding(a)switch.ch http://securityblog.switch.ch

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Known mail issues @bluewin.ch?
by Tobi 17 Sep '19

17 Sep '19

We currently experience mail delivery issues with bluewin.ch recipients. > 452 4.1.1 <REDACTED(a)bluewin.ch> requested action aborted: try again later we have tons of those message since this morning. From time to time mail can be delivered. Not have them before today Anyone seeing similar issues with bluewin? Or anyone from bluewin reading this list (can contact me offlist if desired)? Thanks for any help with this issue tobi

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Yahoo Mail Delivery Issues
by Dominic Schlegel 17 Sep '19

17 Sep '19

Hi All We are experiencing problems delivering mails for domains having their MX record set to mx-eu.mail.am0.yahoodns.net (for example yahoo.it, yahoo.de, yahoo.co.uk). So far we have figured out that Yahoo’s DNS servers send different responses. Depending on the DNS response we are able to establish SMTP connections. Below example shows 2 servers from their DNS that seems to accept SMTP connections: [root@x1:~] # dig a mx-eu.mail.am0.yahoodns.net @yf2.yahoo.com +short 188.125.72.73 188.125.72.74 [root@x1:~] # telnet 188.125.72.73 25 Trying 188.125.72.73... Connected to mtaproxy1.free.mail.vip.ir2.yahoo.com. [root@x1:~] # telnet 188.125.72.74 25 Trying 188.125.72.74... Connected to mtaproxy2.free.mail.vip.ir2.yahoo.com. On the other hand we sometimes get other replies from the “same” (the id.server chaos record tell’s us it’s a different one) DNS server with different A records that do not accept SMTP connections: [root@x1:~] # dig a mx-eu.mail.am0.yahoodns.net @yf2.yahoo.com +short 188.125.73.87 212.82.101.46 [root@x1:~] # telnet 188.125.73.87 25 Trying 188.125.73.87... telnet: connect to address 188.125.73.87: Operation timed out telnet: Unable to connect to remote host [root@x1:~] # telnet 212.82.101.46 25 Trying 212.82.101.46... telnet: connect to address 212.82.101.46: Operation timed out telnet: Unable to connect to remote host We have so far confirmed this behaviour from different AS (Hetzer, OVH). Does anybody else experiencing the same behaviour? We have tried to contact their postmaster address and few others we found on the internet. Unfortunately so far no one was really able to help us. The Yahoo Small Business Phone Number that has been posted on this list back in October 2009 seems no longer to be in operations too. Therefore if you know how to get in touch with their technical staff that would be much appreciated. Best Regards Dominic Schlegel

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Microsoft Office 365 Delist Portal
by Alisha Manuela Stutz 03 Sep '19

03 Sep '19

Hi, can somewhere from Microsoft Office 365 contact me off list regarding unreadable captcha[1] and to permit to send mails to Office 365 user. [1]https://sender.office.com/ best regards Alisha Manuela -- Eine sehr informative Broschüre über Transsexualität die Einblicke gibt um Vorurteile abzubauen oder gar nicht entstehen lässt. https://www.stadt-zuerich.ch/content/dam/stzh/prd/Deutsch/Gleichstellung/Th…

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Sunrise TV
by Xaver Aerni 31 Jul '19

31 Jul '19

Hello, Could someone from Sunrise TV me contact offline Thanks And Greetings Xaver

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##### SwiNOG #36 - Call for Papers & Sponsors (2019-Nov-14) #####
by Steven Glogger 29 Jul '19

29 Jul '19

Dear SwiNOG supporter, this is the official Call for Paper email. Please submit your proposal via https://www.swinog.ch/cfp/ <https://www.swinog.ch/cfp/> The 36th meeting of the Swiss Network Operators Group (SwiNOG) will be held in Berne on top of the Gurten on Thursday November 14th 2019. Important Dates for https://www.swinog.ch/meetings/swinog36/: 29.07.2019 Call for Papers 19.08.2019 Registration opens 31.10.2019 Final publication of agenda 03.11.2019 Registration closes 08.11.2019 Deadline for all slides 14.11.2019 Meeting day Topics for Presentations/Talks The number and length of presentations per session is not fixed, although due to time constraints we would prefer the length of the presentations to be between 5 to 45 minutes. Here is a non-exhaustive list of typical SwiNOG meeting topics: Security, DDOS Mitigation, IPv6 Open Source tools and interesting Github projects International view of the internet (incidents, outages, measurements) Routing Server applications (DNS, Web, etc.) Legal issues (BüPF, etc.) Telecommunication politics (Net Neutrality, Incumbent monopoly, etc.) -> PLEASE feel free to talk to us about any kind of topic and collaboration!!! You can always start a discussion on the list - I'm sure people join in. Language of Slides and Talks The whole day will be held in English, therefore we kindly ask you to produce your presentation in English. Be aware that in general we will record your presentation on video and publish it on Youtube (unless disapproved). Submission Guidelines All submissions must have a strong technical bias and must not be solely promotional for your employer. Please remember that your presentations should be suitable for a target audience of technicians from varied backgrounds, working for companies whose sizes may vary considerably. To submit a proposal for a presentation, we request that you to fill in the form at https://www.swinog.ch/cfp/ <https://www.swinog.ch/cfp/> We also welcome suggestions for specific presentations which you feel would be valuable to the SwiNOG community. Please be aware that your presentation will be published on the SwiNOG website after the event. We can publish modified slides if requested - it might be that some confidential data will be presented by you which are not intended for publication on the internet. Call for Sponsors At the moment we don't have yet a sponsor (thus the meeting is not yet fixed). If you are interested to be part of SwiNOG #36 as sponsor or supporter, please get in touch with us. For more informations about sponsoring opportunities check out: http://www.swinog.ch/sponsor Greetings, Steven Glogger SwiNOG Core Team General Information (SwiNOG Community) The Swiss Network Operators Group (SwiNOG) is an informal group of people who are concerned with engineering and operation of the Swiss Internet. SwiNOG exists to enhance the quality of Internet services available in Switzerland. It does this by fostering the free exchange of technical ideas and information between different companies and organisations. SwiNOG is a community for professionals who are operating, designing or researching the Internet. It provides a technical forum where those working on, with and for the Internet can come together to solve problems with every aspect of their (net)work. The meeting is designed to provide an opportunity for the exchange of information among network operators, engineers, researchers and other professionals close to the network community. More information about SwiNOG can be found at http://www.swinog.ch/ <http://www.swinog.ch/>, Facebook, Xing, Information about the meeting will be published at http://www.swinog.ch/meetings/swinog36 <http://www.swinog.ch/meetings/swinog36>/ General Information (SwiNOG Organisation) The SwiNOG Organisation Association is a non-profit association under article 60 and further of the swiss civil law. It manages the SwiNOG community ressources (domain, web, mailing-lists, etc..) and organises SwiNOG meetings. Contact: SwiNOG Organisation 8000 Zurich Switzerland

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Fwd: [nog-org] Free BGP related training material
by Arnold Nipper 23 Jul '19

23 Jul '19

Just wanted to share this info w/ you. Cheers and enjoy summertime Arnold -------- Weitergeleitete Nachricht -------- Betreff: [nog-org] Free BGP related training material Datum: Tue, 23 Jul 2019 11:06:15 +0200 Von: Mirjam Kuehne <mir(a)ripe.net> An: nog-org(a)ripe.net Dear colleagues, The Network Startup Resource Center (NSRC) is maintaining a wealth of training material related to BGP, Peering, IXPs, Routing Security etc.: https://learn.nsrc.org/bgp Maybe interesting to pass on to your communities? Kind regards, Mirjam Kühne RIPE NCC _______________________________________________ nog-org mailing list nog-org(a)ripe.net https://lists.ripe.net/mailman/listinfo/nog-org -- Arnold Nipper email: arnold(a)nipper.de mobile: +49 172 2650958

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openssl 1.1.1c and too short DH key on @bluewin.ch
by Benoît Panizzon 17 Jul '19

17 Jul '19

Hi List If you also noticed emails not being delivered anymore to @bluewin after uprading to Debian Buster or and other system with newer openSSL libraries. This is due to new versions of openSSL not accepting DH keys shorter than 1024 to counter the logjam attack. Unfortunately the keys provided by bluewin are too short, causing the TLS handshake to fail. Work-Around for now: Disable DH Test with: # openssl s_client -cipher 'DEFAULT:!DH' -connect \ mxbw.lb.bluewin.ch:smtp -starttls smtp In sendmail.mc O CipherList=HIGH:!DH -Benoît-

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