Re: Please, talk me down.

2012-10-21 Thread Leen Besselink
, or failing, leaving motorists stranded, etc, thus spending time not updating the design to incorporate beneficial, new standards. randy -- -JH Have a nice day, Leen.

Re: Last of ipv4 /8's allocated

2011-02-01 Thread Leen Besselink
Doesn't really matter who gets what, because no one is going to route anything larger than a /8 anyway, particularly the RIR allocations. Just kinda fun to think about :-) -Randy How about when HP/Compay/DEC buys Apple or the other way around ? ;-) They could do so in theory anyway.

Re: [arin-announce] ARIN Resource Certification Update

2011-01-30 Thread Leen Besselink
a good alternative yet. Fully support StartSSL and RIPE for trying to lower the bar for more security. Have a nice weekend, Leen.

Re: Using IPv6 with prefixes shorter than a /64 on a LAN

2011-01-30 Thread Leen Besselink
On 01/25/2011 11:06 PM, Owen DeLong wrote: 640k ought to be enough for anyone. If IPv4 is like 640k, then, IPv6 is like having 47,223,664,828,696,452,136,959 terabytes of RAM. I'd argue that while 640k was short sighted, I think it is unlikely we will see machines with much more than a

Re: Is NAT can provide some kind of protection?

2011-01-16 Thread Leen Besselink
On 01/15/2011 11:06 PM, Stephen Davis wrote: I'm a full supported for getting rid of NAT when deploying IPv6, but have to say the alternative is not all that great either. Because what do people want, they want privacy, so they use the IPv6 privacy extensions. Which are enabled by default on

Re: Is NAT can provide some kind of protection?

2011-01-15 Thread Leen Besselink
On 01/15/2011 02:01 AM, George Bonser wrote: From: William Herrin Sent: Friday, January 14, 2011 4:11 PM To: nanog@nanog.org Subject: Re: Is NAT can provide some kind of protection? On Fri, Jan 14, 2011 at 2:43 PM, Owen DeLong o...@delong.com wrote: Ah, but, the point here is that NAT

Re: Is NAT can provide some kind of protection?

2011-01-15 Thread Leen Besselink
On 01/15/2011 03:01 PM, Joel Jaeggli wrote: On 1/15/11 1:24 PM, Leen Besselink wrote: I'm a full supported for getting rid of NAT when deploying IPv6, but have to say the alternative is not all that great either. Because what do people want, they want privacy, so they use the IPv6 privacy

Re: Problems with removing NAT from a network

2011-01-09 Thread Leen Besselink
On 01/09/2011 07:46 AM, Matthew Kaufman wrote: On 1/8/2011 3:16 AM, Leen Besselink wrote: Hello Mr. Kaufman, In the upcoming years, we will have no IPv6 in some places and badly performing IPv4 (CGN, etc.) with working IPv6 in others. Right. So we're discussing just how badly performing

Re: NIST IPv6 document

2011-01-05 Thread Leen Besselink
and slides should show up on the list soon: http://media.ccc.de/tags/27c3.html (because of audio transcoding issues some videos are not online right now, if you ask me nicely I could mail a link for the video from before they took it down) Have a nice day, Leen Besselink.

Re: Blocking International DNS

2010-12-01 Thread Leen Besselink
On 12/01/2010 10:41 PM, Randy Bush wrote: the more i think about this, the more i am inclined to consider a second trusted root not (easily) attackable by the usg, who owns the root now, or the acta vigilantes. as dissent becomes less tolerated, let alone supported, we may want to attempt to

Re: Failover IPv6 with multiple PA prefixes (Was: IPv6 fc00::/7 - Unique local addresses)

2010-11-02 Thread Leen Besselink
On 11/02/2010 01:26 PM, Tim Franklin wrote: About the only hack I can see that *might* make sense would be that home CPE does NOT honour the upstream lifetimes if upstream connectivity is lost, but instead keeps the prefix alive on very short lifetimes until upstream connectivity returns.

Re: Only 5x IPv4 /8 remaining at IANA

2010-10-21 Thread Leen Besselink
On 10/21/2010 09:25 PM, George Bonser wrote: However, consider the fact that there will be v6 only hosts popping up after IANA/RIR/ISP exhaustion. There will be new entrants in the public internet space that cannot obtain v4 addresses and will be reachable via v6 only ... Yep, you can't do

Re: New hijacking - Done via via good old-fashioned Identity Theft

2010-10-07 Thread Leen Besselink
to this by hand for a long time for a lot of contacts. The good thing about using a unique e-mail address instead of a password is that you can block at the SMTP-level, without even receiving an e-mail body. Have a nice day, Leen. each potential person that can send email to your email address, gets

Re: List of Teredo servers and teredo relays

2010-09-12 Thread Leen Besselink
On 09/12/2010 08:42 AM, Antonio Querubin wrote: On Sat, 11 Sep 2010, Jared Mauch wrote: I would be careful actually using teredo, as some of them (eg: Microsoft) have swaths of native IPv6 networks that are unreachable. While I would agree in principle, in practice we have little control

Re: Did your BGP crash today?

2010-08-28 Thread Leen Besselink
On 08/28/2010 11:39 AM, Saku Ytti wrote: On (2010-08-28 18:20 +0900), Randy Bush wrote: a bgp regression suite would not have caught this as it was not a repeat. but it sure would be useful to implementors. Naturally 'proving' that non-trivial software works is practically

Re: Did your BGP crash today?

2010-08-28 Thread Leen Besselink
On 08/28/2010 01:52 PM, Thomas Mangin wrote: My point was not about crafted bgp message to test border cases - this is what one would expect in a regression suite. It is about the use of a fuzzer to corrupt packet when you then do not know if the router is then behaving correctly or not.

Re: Should routers send redirects by default?

2010-08-20 Thread Leen Besselink
On 08/21/2010 02:08 AM, Brandon Ross wrote: On Fri, 20 Aug 2010, Ricky Beam wrote: I think it's almost universally disabled (by default) everywhere in IPv4 purely for security (traffic interception.) Okay, I'll ask again. Exactly how does disabling ICMP redirects on my router prevent

Re: end-user ipv6 deployment and concerns about privacy

2010-08-19 Thread Leen Besselink
On 08/19/2010 07:58 PM, Joakim Aronius wrote: * Joel Jaeggli (joe...@bogus.com) wrote: manual configuration of ip address name mappings seems like a rather low priority for the average home user... I don't expect that will be a big activity in the future either, more devices means less

Re: Web expert on his 'catastrophe' key for the internet

2010-07-28 Thread Leen Besselink
On 07/28/2010 02:21 AM, valdis.kletni...@vt.edu wrote: That plus the phrase restarting the Internet is more than a little bit misleading. If you think that is misleading, you would want to see this article: http://www.metro.co.uk/news/836210-brit-given-a-key-to-unlock-the-internet By

Re: Addressing plan exercise for our IPv6 course

2010-07-24 Thread Leen Besselink
Eventually ARIN (or someone else will do it for them) may create a site you can register your address and know that it really is unique among participating registrants. Random is fine, unique is better. Such a site would be the seed for when (if) we come up with the tech for everyone to have

Re: Mail Submission Protocol

2010-04-21 Thread Leen Besselink
On Wed, Apr 21, 2010 at 10:49:07AM -0300, Claudio Lapidus wrote: Hello all, Hello Claudio, At our ISP operation, we are seeing increasing levels of traffic in our outgoing MTA's, presumably due to spammers abusing some of our subscribers' accounts. In fact, we are seeing connections from

Re: Mail Submission Protocol

2010-04-21 Thread Leen Besselink
On Wed, Apr 21, 2010 at 10:05:34AM -0400, Mike Walter wrote: We have had very good luck with using port 587 and requiring the users to authenticate to send email from outside our network. Inside customers, we have not changed to force port 587 and authentication for email clients, but the

Re: Rate of growth on IPv6 not fast enough?

2010-04-20 Thread Leen Besselink
On 04/20/2010 09:31 PM, Roger Marquis wrote: Jack Bates wrote: .01%? heh. NAT can break xbox, ps3, certain pc games, screw with various programs that dislike multiple connections from a single IP, and the crap load of vpn clients that appear on the network and do not support nat traversal

Re: Rate of growth on IPv6 not fast enough?

2010-04-19 Thread Leen Besselink
On 04/19/2010 07:45 PM, Bill Bogstad wrote: On Mon, Apr 19, 2010 at 1:14 PM, Mohacsi Janosmoha...@niif.hu wrote: On Mon, 19 Apr 2010, Bill Bogstad wrote: On Mon, Apr 19, 2010 at 12:10 PM, Frank Bulk - iName.com frnk...@iname.com wrote: Don't forget the home gateway

Re: legacy /8

2010-04-04 Thread Leen Besselink
On 04/03/2010 07:39 PM, valdis.kletni...@vt.edu wrote: On Sat, 03 Apr 2010 08:06:44 EDT, Jeffrey Lyon said: For small companies the cost of moving to IPv6 is far too great, especially when we rely on certain DDoS mitigation gear that does not yet have an IPv6 equivalent. So? How

Re: [members-discuss] Re: RIPE NCC Position On The ITU IPv6 Group (fwd)

2010-03-02 Thread Leen Besselink
Not comparing this to the former-DDR or Chinese situation (please refer to my tin-foil remark above) a per-country specific prefix is not necessarily a bad thing and may even have an upside. Care to explain what that could possibly be? (I simply don't see an upside to making it easy to

Re: [members-discuss] Re: RIPE NCC Position On The ITU IPv6 Group (fwd)

2010-03-02 Thread Leen Besselink
On 03/02/2010 11:46 PM, Richard Barnes wrote: Care to explain what that could possibly be? (I simply don't see an upside to making it easy to censor the internet by national identity). Maintenance of GeoIP-databases becomes easier and less error-prone ? Possible less out of date

Re: Level 3 DC issues?

2010-01-29 Thread Leen Besselink
On 01/29/2010 08:30 PM, Robert D. Scott wrote: Looks like an internal problem to BoA. The redirect works, and I get an immediate reply. The https redirect page appears boinked. Even with a -k curl took over 30 seconds to get the page, and the browser would have timed out. Hi, Just noticed

Re: Cogent $1500 GigE

2009-12-15 Thread leen
On 12/15/2009 09:53 PM, Seth Mattinen wrote: Babak Pasdar wrote: Dear List, I am getting a big push from Cogent on their full GigE for $1.50 per circuit. What are your experiences with Cogent in general? If on the fence, how would you use their service for this deal to make sense?

Re: Follow up to previous post regarding SAAVIS

2009-08-15 Thread Leen Besselink
Keith Medcalf wrote: ... Dont know what web 2.0 is but the new portal is a web based object management system complete with recommended changes and inconsistency lists. We just added prefix allocation check with backend information from PCH (prefix checker tool). Web 2.0 is marketroid

Re: Why choose 120 volts?

2009-05-28 Thread Leen Besselink
It's worth noting that despite higher voltages here there aren't more deaths or injuries - but maybe it's because people take it more seriously. Admittedly no one I know is nuts enough to use body parts for liveness testing. (sorry for being kinda late in this discussion) I've never felt

Re: real hardware router VS linux router

2009-02-21 Thread Leen Besselink
mike wrote: Well, Our operation uses linux everywhere and we have our own in house tiny embedded flavor with all the tools and things that make it suited for use in big and small boxes as many kinds of router and general packet flipping appliance. I have confidence built on long term,

Re: real hardware router VS linux router

2009-02-20 Thread Leen Besselink
William Warren wrote: On 2/19/2009 9:37 AM, Ryan Harden wrote: While you could probably build a linux router that is just as fast as a real hardware router, you're always going to run into the moving pieces part of the equation. In almost all scenarios, moving parts are more prone to

Re: real hardware router VS linux router

2009-02-20 Thread Leen Besselink
Ray Burkholder wrote: In scaling upward. How would a linux router even if a kernel guru were to tweak and compile an optimized build, compare to a 7600/RSP720CXL or a Juniper PIC in ASIC? At some point packets/sec becomes a limitation I would think. Is anyone building linux/bsd-box add-on

Re: IPv6 Confusion

2009-02-18 Thread Leen Besselink
implementations though, haven't had the time to check yet. Bye, Raymond. See you again, Leen.

Re: IPv6 Confusion

2009-02-17 Thread Leen Besselink
Mark Andrews wrote: (or just pre-populate the DNS with DHCP-2001-9A98-D247-{5more}.ISP.com and be done with it like many places do for IPv4) Which still leaves the problem of how does the machine get its name in a trusted manner. I don't know about that, but I do have an

Re: Tightened DNS security question re: DNS amplification attacks.

2009-01-28 Thread Leen Besselink
- Original Message - From: aljuhani i...@linuxmount.com Subject: Re: Tightened DNS security question re: DNS amplification attacks. To: nanog na...@merit.edu Well the RBLs, in using dns queries, is another form of legal DDoS attacks, mainly when the suddenly cease to