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RE: UCEProtect Level 3
by Skywing 08 May '09

08 May '09

I seem to recall that Mailstreet/MXlogic firewalls off (not rejects at SMTP level) any AS listed in UCEProtect, at least of about a year or so ago. - S -----Original Message----- From: Suresh Ramasubramanian <ops.lists(a)gmail.com> Sent: Thursday, May 07, 2009 22:25 To: Raleigh Apple <rapple(a)rapidlink.com> Cc: nanog(a)nanog.org <nanog(a)nanog.org> Subject: Re: UCEProtect Level 3 On Fri, May 8, 2009 at 12:04 AM, Raleigh Apple <rapple(a)rapidlink.com> wrote: > Is anyone else out there aware that the UCEProtect Level 3 email blacklist > blocks entire AS? > Is there anyone out there aware of any significant (or larger than 'man and his dog on a DSL') mail provider using UCEPROTECT? -- Suresh Ramasubramanian (ops.lists(a)gmail.com)

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None
by Rich Kulawiec 07 May '09

07 May '09

Cc Bcc: Subject: Re: UCEProtect Level 3 Reply-To: In-Reply-To: <20090507161041.f1711126.darcy(a)druid.net> On Thu, May 07, 2009 at 04:10:41PM -0400, D'Arcy J.M. Cain wrote: > It is. I understand what they are trying to do but we were cut off > from some places because someone else in the huge upstream we are with > did something that appeared to be spam. It's too broad of a brush. (a) This discussion should probably be happening someplace other than NANOG (spam-l or mailop, perhaps?), and (b) If you feel that UCEProtect L3 paints with too broad a brush, then you're certainly free not to use it. I happen to agree with you on this particular level of this particular DNSBL for my particular applications, so I don't use it either. However: I'm aware of other folks who are using it quite effectively as *part* of a scoring system. ---Rsk

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Re: Data centre info
by JC Dill 07 May '09

07 May '09

> >> JC Dill <jcdill.lists(a)gmail.com> writes: >> >> >>> Why do you believe that it is proper to deliver the cooling "top >>> down"? Heat rises! The cool air needs to be delivered to the bottom >>> (raised floor) or front (alternate row cooling) so that it flows >>> over/thru the computers on its way to the hot air intakes which should >>> be located above the back of the cabinet (above the "hot row") or top >>> of the room (for raised floors). >>> >> >> This would be true if the computers were all mounted within several >> inches of the floor, but they're not. >> >> Just as heat rises, cold sinks. Discharging cool air up high in a >> data center will cause it to end up where it needs to be for all >> computers in a rack, not just the ones in the bottom. >> In theory, this should work. In theory, there is no difference between theory and practice. In practice, there is. >> Visit any Equinix for an example of this principle in action I disagree, and I've been in several Equinix locations. Computers produce heat / hot air, and this hot air rises. As the hot air rises and moves away from the computers, new air has to circulate in from *somewhere*. There isn't a vacuum of "no air" between the cold air sinking/sitting at the bottom of the room and the hot air rising up to the ceiling. :-) When you have cold air entering the bottom and/or front of a rack, and hot air exiting out the back (and then up) then you don't have cold air mixed with hot air circulating in the room before it gets to the computers. The fans located in the building's hot air intakes, the action of the rising hot air, and the fans blowing the cold air into the data center all create the air flow that pulls the "heavier" cold air up into and across the computers. When you have cold air coming down in the same area with hot air going up, it just mixes up into warm air, and truly cold air never gets to the bottom - you get warm (or hot) air flowing across the bottom computers in the racks. This is not an efficient air flow, and not a good way to keep the hot and cold air separate so you can get cold air (not warm air) flowing over the equipment. It works great for offices full of people (where you want an even temp everywhere in the room) but isn't great for computers (where you want cold air entering the equipment for maximum cooling effect and hot air being removed as quickly as possible.) I've never been happy with the room temps or equipment temps in any data center that used this "blow cold air from the ceiling" approach. But hey, if it works for your equipment, more power to you. I encourage all my competitors to do this. jc

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Data centre info
by Deric Kwok 07 May '09

07 May '09

Hi all Any suggestion about data center 1/ to put on the switch in rack? eg: top. middle or bottom position 2/ There is no raise floor - adv - disadv Thank you for your information

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Alcatel 6850/Service Mode
by Jeffrey Meltzer 07 May '09

07 May '09

While Alcatel is somewhat on-topic -- if anyone is using 6850/6400 with Service Mode/Stacked VLAN's, can you drop me a note off list? Looking for anyone with experience building rings with them as points on the rings (CPE). Thanks, Jeff -- Jeffrey Meltzer Director of Network Operations Long Island Fiber Exchange / Exobit Networks (A LIFE Company)

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Where to buy Internet IP addresses
by LEdouard Louis 07 May '09

07 May '09

Optimum Online business only offer 5 static IP address. Where can I buy a block of Internet IP address for Business? How much does it cost? Most of our devices only require an internal IP address to reach the internet, but we have a Juniper DX for load balancing. We must provide Juniper DX with an internet IP address and point it to internal IP address for customers to be able to reach it from the internet. this is for testing and development purposes and will expect several servers on Load-balancer. The 5 static IP addresses just won't be enough. Thanks in advance Louis

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Contact for Verizon Wireless data
by Brielle Bruns 07 May '09

07 May '09

Hello all, Does anyone have a contact within Verizon Wireless data (ie: EV-DO) that could help with some... odd (for lack of a better word) connection problems from an EV-DO modem? I think there may be some sort of packet filtering going on, but I can't tell for sure. It's kinda annoying... I'm in Los Angeles on a trip, and I have to VPN back home just to work around the filtering. Offlist would be great! Thank you! -- Brielle Bruns The Summit Open Source Development Group http://www.sosdg.org / http://www.ahbl.org

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Testing LFNs
by Kaegler, Mike 06 May '09

06 May '09

I have a new T3 thats 65msec long. I'd usually be using iperf to test new links, but at 65msec, even at the maximum window size, I can only get 6-8mbit through. No combination of options I've been able to find has gotten me more than 6mbit through this link. Should I just shotgun 9 copies of it? Are there better ways to test these links? Can one verify this link with just a pair of 7200s and linux machines on either side? Or is this something one really needs "real" test hardware for? If 6mbit go through clean, is there a real chance 44 will not? TIA, -mKaegler -- Michael Kaegler, TESSCO Technologies: Engineering, 410 229 1295 Your wireless success, nothing less. http://www.tessco.com/

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Re: Alcatel as Peering and MSE(PE)
by Scott Weeks 06 May '09

06 May '09

On Tue, May 5, 2009 at 10:29 AM, Mauritz Lewies <mauritz(a)lho.co.za> wrote: > All based on the Alcatel 7750 chassis. <snip> > What is the general consensus of them in these layers of the network and > can anyone point out some strong points/short falls? <snip> ------------------------------------------------------ I've been on them for over a year and I like them. However, they operate very differently than other routers I have worked on. Also, there're definitely bugs here and there if you push them (7750/7450/7710) hard enough... ;-) There is a list here: https://puck.nether.net/mailman/listinfo/alcatel-nsp Not very many posts, though. scott

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Minnesota Sends List of Blacklisted Gambling Sites to ISPs, Telcos
by Jeremy L. Gaddis 06 May '09

06 May '09

With regard to the recent discussion... "Late last month the Minnesota Department of Public Safety announced it would require ISPs and telcos to block computers located in the state from accessing gambling sites, and said non-compliant companies would be referred to the FCC. Now, the state has sent each ISP and telco the enclosed blacklist of sites and URLs." http://www.govtech.com/gt/articles/656645 -- Jeremy L. Gaddis

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