swinog March 2010

swinog@lists.swinog.ch

34 participants
22 discussions

Switzerlandwide Internet problem
by Michele Capobianco 16 Jul '23

16 Jul '23

Hey all A friend just told me that Cybernet told him there is a Switzerlandwide Internet Problem. Does anybody know something? Cheers Michele -------- Online Consulting AG, Michele Capobianco, System Administrator, Weststrasse 38, CH-9500 Wil Phone +41 (0)71 913 31 31, Fax +41 (0)71 913 31 32 http://www.online.ch, michele.capobianco(a)online.ch<mailto:michele.capobianco@online.ch> --------

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Cisco Devices for Sale / 2x Cisco ASA5520 / Cisco WS-C4507R + some modules
by Stephan Wolf 27 Oct '10

27 Oct '10

hello all, hopefully I do not break here a subscription-Law, so simply: We have some Cisco parts / devices on Stock, which where nearly never used: 2x Firewall Cisco ASA5520-AIP20-K9 (ASA 5520 Appl w/ AIP-SSM-20, SW,300 VPN, Prs,4GE+1FE,3DES/AES) 1x Switch Cisco WS-C4507R + some modules (2x 24 port 10/100/1000 GBE / 2x V Console / 2x power supply etc They where bought for a project, which was frozen, and there was no fit in other needs / projects. If you see need, please contact me directly in english or german. mailto:swinog-ch@hightowernet.de Detailed product list & photos available on request. Condition of devices: nearly new ASA's where tested only some hours 4507er was in use for about 2-3 months Bougt end 2006. Used in Summer 2007 Will be sold on highest bid. Test before possible, sold without warranty. Device location: near to Zurich Alternatively: do you know company near Zurich, which makes business with buying/selling used hardware in this class ? We simply want to cleanup our stock ASAP. -- Mit freundlichen Grüßen Stephan Wolf mailto:swinog-ch@hightowernet.de

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Port 25 Blockade @ Swisscom (Bluewin)
by Steven.Glogger＠swisscom.com 14 Apr '10

14 Apr '10

Hi everyone To officially talk about the "mail problems on port 25 with swisscom dsl" I would like to give you some (technical) information. We had several needs to stop spam from our network: - We're receiving about 30'000-100'000 abuse complaints per month (contains multiple reports per case) - Mail filtering on our infrastructure (our mail servers) are only catching 20% of all spam sent from swisscom dsl - 80% is sent directly from the customer lines. (source: http://www.maawg.org/port25) - About 60% to over 90% of all mails sent over residential customer lines are identified as spam. This is more than 10 millions spam emails per day (~375 terabytes per year) The impacts are clear: - Spam generates a quite high amount of cost within Swisscom (money, personal, time, storage, data, etc.) - Our reputation is getting bad - We might get listed on blacklists (-> impact on legimite traffic) - Customers are getting blocked (e.g. in sandbox) and are not happy therefore (most of the customers are not realizing, that they are sending spam, because they are virus-/trojan-infected) So, what we did and what are we doing? We currently ran a pilot. The productive rollout which will affect all customers will start this week and will take around 2 months until all customers are migrated. Only (ex-)bluewin customers with dynamic adsl-lines will be affected. Swisscom has published an official statement on http://www.swisscom.ch/p25 and modifies the error-message sent to the customer which will be more clearer. The pilot showed very clearly that this countermeasure is very effectful in stopping outgoing spam. Going to the technical part: We're running a transparent proxy on port 25 (smtp) which gets communication from any customer to any port 25 (Layer 4 redirect feature). The proxy is analyzing the email and if it detects that spam has been sent he will reject the connection by issuing an error message to the customer (the mailclient will notice: smtp-error). If the mail is a normal and legitimate email -> no problem: mail will be sent. We will even insert a "received-from:" line in the header. If a bot/trojan is trying to send emails, the customer will not notice. There are no mails beeing stored on the filter server. All decisions are made on-the-fly. Customers, which are virus-affected are handled by the standard abuse process which we have in place (inform, quarantine in a sandbox, etc.). The option for layer 4 redirect is activated via radius - so it can be turned off on request and the customer just has to reconnect. For dynamic customers the option will be activated by default. Customers are asked to authenticate their smtp session and use the mail submission port 587 (not filtered). So, will this affect non-smtp traffic on port 25? Unfortunately, yes. This traffic will be lost. If the customer has a need to use port 25 for other purposes than email he can request turning of the redirecting feature. If a customer usses SSL via port 25 does it work? No, it will be dropped. Customers are kindly requested to use port 465 instead. If a customer uses smtp auth via port 25, will this work? He will receive a smtp error like "sorry, smtp auth not possible. use 587" (error 573). Will we start to block completely port 25 in the future? No, absolutely not. So, I hope things are now getting clearer ,-) Greetings -steven Steven Glogger ___________________________________________________________________________ Cisco CCIE#23778 Network Engineer Telefon +41 44 294 58 41 Mobile +41 79 277 92 35 Fax +41 86 079 277 92 35 steven.glogger(a)swisscom.com ___________________________________________________________________________ Swisscom (Schweiz) AG Network & IT Network Engineering & Operations Binzring 17 CH-8045 Zürich www.swisscom.com

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Problem access to du in Dubai ?
by Thomas Nederman 30 Mar '10

30 Mar '10

Hello, Since midnight we are having problems sending traffic to du.ae (our datacenter in Dubai (DIFC)). Does anyone else have problems with communication to Dubai/DIFC/Du.ae ? route: 91.189.12.0/22 origin: AS15802 <http://www.db.ripe.net/whois?searchtext=AS15802&inverse_attributes=orig in&form_type=simple> With Kind Regards Thomas Nederman Systems & Infrastructure Penta Consulting SA Voice +41 22 316 1090 Direct +41 22 316 1028 Fax +41 22 316 1099 infra(a)penta.ch <mailto:infra@penta.ch> www.penta.ch <http://www.penta.ch> ______________________________________________ Your applications everywhere, always TM ______________________________________________

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Open position as Senior Network Engineer
by Michel Renfer 29 Mar '10

29 Mar '10

Hi All! Finecom has an open position as Senior Network Engineer (3rd level, m/w). For more informations please contact me offline... http://www.finecom.ch/jobs cheers, michel

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Could someone from Cablecom contact me off-list
by Raffael Schmid 29 Mar '10

29 Mar '10

Hi Could someone from Cablecom contact me off-list? Its about SMTP/MX. Thanks a lot raf Nine Internet Solutions AG Raffael Schmid Albisriederstrasse 243c 8047 Zuerich 044 637 40 00 raffael.schmid(a)nine.ch

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technician of Xincs
by Silvan Gebhardt 29 Mar '10

29 Mar '10

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi Is there a technician of Xincs.eu online? Please contact me offlist, all your official contact ways are dead/not answered! thanks Silvan -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (Darwin) iEYEARECAAYFAkuwd3kACgkQC82WwYR1u2qpcQCeKkHHACOEfHixbCjLaqvWbcQh /NcAnRX6dEzZo5dxVgCiNOUpw2Jmok/I =a1yQ -----END PGP SIGNATURE-----

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Could someone from VTX me contact offline
by Xaver Aerni 28 Mar '10

28 Mar '10

Thanks a lot and Greetings Xaver Xariffusion Informatik & Telecom Xaver Aerni Zürichstrasse 10a 8340 Hinwil Tel. +41 43 843 7878 E-Mail xaerni(a)pop.ch

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EFG FP is hiring (Zurich)
by Josh Geisser 26 Mar '10

26 Mar '10

As our company grows we have green light to massively increase our IT Departments, so we're having quite a few positions to offer right now: Network engineer http://www.efgfp.com/files/1943/Jobad_Networks-Engineer_en.pdf First Level Supporter http://www.efgfp.com/files/1693/Jobad_1st_level_supporter_en.pdf Windows Engineer - Desktop Technology http://www.efgfp.com/files/1985/Jobad_Windows_Engineer_%96_Desktop_Technolo… Windows Engineer - Server Technology http://www.efgfp.com/files/1987/Jobad_Windows_Engineer_%96_Server_Technolog… Oracle DBA http://www.efgfp.com/files/1983/Jobad_Oracle_DBA_en.pdf Senior Software Developer http://www.efgfp.com/files/1727/Jobad_IT_Senior_Software_Developer_en.pdf Deputy head Software Development http://www.efgfp.com/files/1725/Jobad_Deputy_Head_Software_Development_en.p… Head of IT Operations http://www.efgfp.com/files/1945/Jobad_Head_IT_Operations_en.pdf If you are / you know someone who could be interested, contact me off-list, or directly contact our hr(a)efgfp.com and mention me. Cheers Josh

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mx.hispeed.ch RBL issue
by Philip Iezzi 25 Mar '10

25 Mar '10

Hi there Could someone from Hispeed/Cablecom pls. contact me off-list? We are having troubles sending to mx.hispeed.ch Thanks. Regards, Philip

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swinog March 2010