swinog September 2008

swinog@lists.swinog.ch

35 participants
25 discussions

Re: [swinog] Anyone from Green here?
by Stanislav Sinyagin 11 Sep '08

11 Sep '08

there is at least one reason for not sending email directly: if the server IP address is added to some blacklist like SORBS, the notification is sent to the contact address of the reverse zone. If the server is under the ISP's maintenance, the ISP will (supposedly) notice this event and try its best (haha) to remove the server address from that blacklist. If the end-user's fixed IP address appears in SORBS list, the user will not notice it, and it will take much more time before it's removed. interesting, is there a business case behind? How much would one pay for a reliable and SORBS-free mail relay service? It's actually quite easy to build :) ----- Original Message ---- > From: Per Jessen <per.jessen(a)enidan.ch> > To: swinog(a)lists.swinog.ch > Sent: Thursday, September 11, 2008 12:58:40 PM > Subject: Re: [swinog] Anyone from Green here? > > Stanislav Sinyagin wrote: > > > Anyway, who's going to send email directly from a broadband > > connection, instead of using the ISP's relay? :-) > > > > Provided everything is properly set up, why shouldn't they?

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Re: [swinog] Anyone from Green here?
by Stanislav Sinyagin 11 Sep '08

11 Sep '08

well, I used to support customers which were running mail servers behind a broadband connection. Most spam filters and blacklists like SORBS check the reverse naming, and if it doesn't have words like cable, ppp, dynamic and such, it's quite safe to work with it. It just has to have some decent name, but the name shouldn't be necessarily customizable by the user. Anyway, who's going to send email directly from a broadband connection, instead of using the ISP's relay? :-) ----- Original Message ---- > From: Roman Hochuli <roman.hochuli(a)nexellent.ch> > To: swinog(a)swinog.ch > Sent: Thursday, September 11, 2008 12:20:57 PM > Subject: Re: [swinog] Anyone from Green here? > > Hey Stan > > > There aren't many applications that really depend on the reverse name - > > for most of the things it's enough that the reverse name is a valid one. > > You never tried to operate a mailserver behind a DSL-connection yet, > right? :) > > -- > Best regards, > Roman Hochuli > Operations Manager > > nexellent ag > Saegereistrasse 29 > CH-8152 Glattbrugg > > Phone: +41 44 562 30 40 > Fax: +41 44 562 30 41 > URL: www.nexellent.ch > X-NCC-RegID: ch.nexellent > > Imagination is the one weapon in the war > against reality. > -- Jules de Gaultier > _______________________________________________ > swinog mailing list > swinog(a)lists.swinog.ch > http://lists.swinog.ch/cgi-bin/mailman/listinfo/swinog

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Anyone from Green here?
by Per Jessen 11 Sep '08

11 Sep '08

One of my customers has just been told he needs to pay to get a DNS reverse map entry for thei Green ADSL line with fixed IP. Is that really true?? /Per Jessen, Herrliberg

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Re: [swinog] Anyone from Green here?
by Stanislav Sinyagin 11 Sep '08

11 Sep '08

If the reverse mapping points to some valid A record, why do you need to change it? There aren't many applications that really depend on the reverse name - for most of the things it's enough that the reverse name is a valid one. ----- Original Message ---- > From: Per Jessen <per.jessen(a)enidan.ch> > To: swinog(a)lists.swinog.ch > Sent: Thursday, September 11, 2008 11:29:04 AM > Subject: Re: [swinog] Anyone from Green here? > > Marc SCHAEFER wrote: > > > On Thu, Sep 11, 2008 at 10:37:35AM +0200, Per Jessen wrote: > >> One of my customers has just been told he needs to pay to get a DNS > >> reverse map entry for thei Green ADSL line with fixed IP. > >> Is that really true?? > > > > I had a similar query lately, and administration(a)green.ch replied that > > with MPS1 (1 IP address) they won't do it, they will do it only for > > MPS8 and with a delegation. > > That's the answer my customer got too. > > > > > That's a pity, but it's how marketing works. > > It's not only very poor marketing, it's incredibly arrogant. Selling a > static IP and then charging extra for the reverse mapping ... > > > /Per Jessen, Herrliberg > > _______________________________________________ > swinog mailing list > swinog(a)lists.swinog.ch > http://lists.swinog.ch/cgi-bin/mailman/listinfo/swinog

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GPS-Technik is hiring: Senior Network Engineer CCIE
by orlando＠anyaccess.ch 09 Sep '08

09 Sep '08

GPS-Technik AG in Schlieren (ZH) is expanding its team and is looking for a Senior Network Engineer (CCIE). Responsibilities: -- Work in multiple long- and short-term network projects for our customers. Face the customers at their premises and work in rapidly changing and stressful environments. -- Manage and fulfil the complete cycle of network projects: Planning, design, deployment and operational support and troubleshooting. -- Work independently, as well as in a team of other engineers. -- Be ready for on-call standby or off-business hours work. The candidate should show good knowledge and experience in the following areas: -- IP Networking at the highest level, CCIE or similar work experience. Knowledge of network protocols at all levels of operation. Practical experience with IP routing protocols (BGP, OSPF, EIGRP), MPLS architectures, good understanding of QoS mechanisms. -- IP Security. Good knowledge of network threats and protection mechanisms. -- Several years of hands-on experience in telecommunication or enterprise networking. -- Optical networking knowledge is a plus. This includes general knowledge of SDH networks and Cisco ONS products. Other requirements: -- Valid and active CCIE certification or similar proven experience -- Teamplayer, collects and shares experience.Autonomous and flexible, ability to set priorities. Demonstration of initiative and pro-active behaviors. Ability to work in a fast moving environment. -- Strong communication skills to all levels of business clients, management and staff -- Fluent German and English, both spoken and written. French is a plus. -- Valid CH driver license -- Swiss, EU citizen or a valid Swiss working permit We offer: -- Challenging and interesting tasks -- A dynamic and motivated team in a growing company -- Versatile job environment -- Competitive salary -- Modern work place near Zurich -- Personal development including further education and professional training Please send your CVs to Mr. Orlando Spitale, CTO, <o.spitale(a)gpstechnik.ch> with a copy to <info(a)gpstechnik.ch>

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primary / backup BGP multi homed issue
by Marco Fretz 04 Sep '08

04 Sep '08

Hi SwiNOGers, We've the problem that sunrise is advertising our prefixes from our backup provider instead of the ones from our primary. This is most likely because our backup provider is a downstream customer from sunrise. Our prefixes then get advertised to level3 (and other sunrise upstream peers). Sunrise seems to be level3 downstream customer and prefer our prefixes from sunrise instead of our primary provider, too. The consequence is that most other ISPs are seeing only our prefixes over sunrise and our backup provider. Sunrise changed their as-communities recently so that's no longer possible for our backup provider to influence their local-pref. I think this might be a common problem in primary / backup BGP scenarios. Any ideas how to solve it? Maybe someone from sunrise can contact me off-list? Thanks and best regards Marco

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Re: [swinog] primary / backup BGP multi homed issue
by Stanislav Sinyagin 04 Sep '08

04 Sep '08

----- Original Message ---- > From: Marco Fretz <mailinglist(a)blah.li> > To: swinog(a)swinog.ch > Sent: Thursday, September 4, 2008 10:33:42 AM > Subject: Re: [swinog] primary / backup BGP multi homed issue > > Stanislav Sinyagin wrote: > > > > > > > > ----- Original Message ---- > >> From: Claudio Jeker > > > >> Prepend your own AS a few times. > > > > this will not help, as L3 sets higher local preference for the prefixes from > its customers. > > yes, and sunrise sets higher pref for prefixes from their customer, too > (as our backup provider is). > > > > > The guys at Sunrise are already working on this, don't worry :) > > So it is a problem only with sunrise? nope. It's how it works everywhere: if you need some special tweaking, you need to request it from your provider, and not from the public list.

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Re: [swinog] primary / backup BGP multi homed issue
by Stanislav Sinyagin 04 Sep '08

04 Sep '08

----- Original Message ---- > From: Claudio Jeker <jeker(a)networx.ch> > Prepend your own AS a few times. this will not help, as L3 sets higher local preference for the prefixes from its customers. The guys at Sunrise are already working on this, don't worry :)

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Re: [swinog] Content delivery system like Akamai?
by Mathias Schrem 03 Sep '08

03 Sep '08

Guten Tag Ich bin vom 30.08.08 bis und mit 14.09.08 nicht im Büro. In dringenden Fällen wenden Sie sich bitte an unseren Support. --- Hello I'm out of office from 30.08.08 till 14.09.08. In urgent cases please contact our Support. --- Fon: 0848 000 627 / International: +41 44 802 68 99 Fax: 0848 000 628 E-Mail: support(a)netstream.ch Freundliche Grüsse Regards Mathias Schrem

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Re: [swinog] Content delivery system like Akamai?
by Scott Weeks 03 Sep '08

03 Sep '08

There're a lot of players in that space. I used to work for a company called Digital Island that bought Sandpiper to get their Footprint CDN. This was then sold to C&W who then sold it to blah, blah and it finally ended up at Savvis. There were several lawsuits with Akamai (a Hawaiian word for smart, clever or intelligent BTW) in the US about who invented what first. Akamai came out on top from what I heard after leaving the company. http://www.savvis.net/corp/Products+Services/Content+Delivery+Network/defau… You should be sure to do the market research before doing anything more than a fun and interesting project. scott --- mailinglist(a)blah.li wrote: From: Marco Fretz <mailinglist(a)blah.li> To: swinog(a)swinog.ch Subject: [swinog] Content delivery system like Akamai? Date: Tue, 02 Sep 2008 10:38:08 +0200 Hi everyone, I think most of you now Akamai and how they deliver 20% of total internet content traffic... This looks like a good explanation: http://research.microsoft.com/~ratul/akamai.html Has anyone tried to build a system similar to Akamai? I should be possible to build it, in a smaller way of course. Some modified named (bind) servers, Squid, etc. >From my point of view, Akamai does the right thing: Why try to have lots of peerings, good transit connnections, etc. when you can serve the content directly out of the most popular ISP networks. They don't need their own network infrastructure for content delivery services (hosting). Is here anyone interested in this topic? Anyone has time and interest to build, "research" and test a "small Akamai" hosting system? My idea is in general: - 2-3 providers (one of you?) - each ISP "donates" 2-3 servers for the project (physical or virtual) - find a modified bind and squid or rebuild it to do this Akamai-like "DNS and url magic" - write a lot of shell scripts for monitoring, etc. - test the bunch of magic with our company sites :P ... but maybe I'm just crazy and you might simply ignore this post :-) thanks, have a nice day best regards Marco _______________________________________________ swinog mailing list swinog(a)lists.swinog.ch http://lists.swinog.ch/cgi-bin/mailman/listinfo/swinog

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swinog September 2008