Re: CNAME records in place of A records

2020-11-06 Thread Doug Barton
On 11/6/20 2:49 PM, Sabri Berisha wrote: - On Nov 6, 2020, at 2:07 AM, Dovid Bender wrote: Hi, Sorry if this is a bit OT. Recently several different vendors (in completely different fields) where they white label for us asked us to remove A records that we have going to them and replace t

Re: plea for comcast/sprint handoff debug help

2020-11-06 Thread Randy Bush
i may understand one place you could get confused. unlike a root CA which publishes a TAL which describes transports, a non-root CA does not publish a TAL describing what transports it supports. of course, rsync is mandatory to provide; but anything else is "if it works, enjoy it. otherwise use r

Technology risk without safeguards

2020-11-06 Thread Suresh Kalkunte
>> Following staff home and picking them off with a rifle is so much >> cheaper and carries a better probability of success. >> And give law enforcement much better probability of success as well. > The safety measures were thorough and > rigorous: it would have been very hard to > screw up and ev

Re: CNAME records in place of A records

2020-11-06 Thread Sabri Berisha
- On Nov 6, 2020, at 2:07 AM, Dovid Bender wrote: Hi, > Sorry if this is a bit OT. Recently several different vendors (in completely > different fields) where they white label for us asked us to remove A records > that we have going to them and replace them with CNAME records. Is there > an

RE: Strange connectivity issue Frontier EVPL

2020-11-06 Thread aaron1
My coworker is having similar issues with PS Lightwave and Alpheus/Logix from San Antonio to Houston whereas some things work and somethings don't -Aaron

Re: Technology risk without safeguards

2020-11-06 Thread William Herrin
On Fri, Nov 6, 2020 at 12:00 PM Rich Kulawiec wrote: > p.s.2: The large quantities of power conduits, cables, shelving, racks, > HVAC ductwork, etc. that are typical of datacenters constitute a haphazard > but modestly effective EM shield, as measured on an ad hoc basis by anyone > who tries to re

Re: Strange connectivity issue Frontier EVPL

2020-11-06 Thread Mike Hammett
This is my biggest complaint about non-wavelength transport. The provider is overselling a port somewhere in the circuit, unless it's a wave. - Mike Hammett Intelligent Computing Solutions Midwest Internet Exchange The Brothers WISP - Original Message - From: w...@loopfre

Re: plea for comcast/sprint handoff debug help

2020-11-06 Thread Randy Bush
>> really? could you be exact, please? turning an optional protocol off >> is not a 'failure mode'. > I suppose it depends on how you think you are serving the data. > If you thought you were serving it on both protocols, but 'suddenly' > the RRDP location was empty that would be a failure. not

Re: Technology risk without safeguards

2020-11-06 Thread Rich Kulawiec
/Friday afternoon On Thu, Nov 05, 2020 at 09:05:34AM -0800, William Herrin wrote: > Following staff home and picking them off with a rifle is so much > cheaper and carries a better probability of success. So does following them home and leaving them brand new unopened large bottles of Woodford

Re: Strange connectivity issue Frontier EVPL

2020-11-06 Thread Karsten Thomann via NANOG
Am Freitag, 6. November 2020, 10:31:25 schrieb Jay Hennigan: > On 11/6/20 10:14, Mike Lyon wrote: > > What hardware is on each side? > > On our aggregate side an ASR920. Customer has a RAD device as the > Frontier handoff. We've seen the same issue with multiple devices at the > customer side incl

Re: plea for comcast/sprint handoff debug help

2020-11-06 Thread Christopher Morrow
On Fri, Nov 6, 2020 at 5:47 AM Randy Bush wrote: > > > Admittedly someone (randy) injected a pretty pathological failure > > mode into the system > > really? could you be exact, please? turning an optional protocol off > is not a 'failure mode'. I suppose it depends on how you think you are ser

Re: Strange connectivity issue Frontier EVPL

2020-11-06 Thread Mike Lyon
Recently saw a relatively same problem when Wave migrated us off of their antiquated 6500 to a brand new ASR920. EVPL had been working flawlessly for years on the 6500, but then stopped working when migrated to the ASR. Tried multiple ports on the ASR and then even another brand new ASR, same pr

Re: Strange connectivity issue Frontier EVPL

2020-11-06 Thread Jay Hennigan
On 11/6/20 10:14, Mike Lyon wrote: What hardware is on each side? On our aggregate side an ASR920. Customer has a RAD device as the Frontier handoff. We've seen the same issue with multiple devices at the customer side including a laptop direct to the RAD. -- Jay Hennigan - j...@west.net Ne

Re: Strange connectivity issue Frontier EVPL

2020-11-06 Thread Mike Lyon
What hardware is on each side? > On Nov 6, 2020, at 10:08, w...@loopfree.net wrote: > > I have similar Frontier NNI's out of One Wilshire, some 1gig some 10. > > While I haven't seen the half-IP-reachable issue you describe I have spent > days and days chasing performance issues on them. I fina

Re: Strange connectivity issue Frontier EVPL

2020-11-06 Thread will
I have similar Frontier NNI's out of One Wilshire, some 1gig some 10. While I haven't seen the half-IP-reachable issue you describe I have spent days and days chasing performance issues on them. I finally got gig line-rate capable iperf3 boxes at both ends and see distinct differences in single-T

Weekly Routing Table Report

2020-11-06 Thread Routing Analysis Role Account
This is an automated weekly mailing describing the state of the Internet Routing Table as seen from APNIC's router in Japan. The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG. Daily listings are sent to bgp-st...@li

Re: CNAME records in place of A records

2020-11-06 Thread Alain Hebert
    Hi,     1. I know y'all know it, but too often I come across customers using CDN Dashboard without 2FA.     In my experience this has been the most abused security vector in the cases I saw.     2. Matthias point is extremely valid.     I would add: Externally monitoring the signature

Re: Strange connectivity issue Frontier EVPL

2020-11-06 Thread Jeff Richmond
Jay, I previously ran the engineering org over there, so sent this to my old team to look at, including the best engineer I know in regard to the RADs. Will pass along anything they come back with. Thanks, -Jeff > On Nov 6, 2020, at 8:59 AM, Jay Hennigan wrote: > > We have a strange issue tha

Re: Strange connectivity issue Frontier EVPL

2020-11-06 Thread Jay Hennigan
On 11/6/20 09:08, Matt Hoppes wrote: Could you be running up against a MAC table limit on the circuit? Unlikely. The only MACs that should be in play are our gateway on our PE router and the customer's router and those are both in the address table and ARP. At layer 3, customer can consistent

RE: Strange connectivity issue Frontier EVPL

2020-11-06 Thread aaron1
EVPL (eline) should not be learning macs. So mac table size should be a non-issue. Unless someone somewhere has constructed a 2-part bridge domain (mef-speak, etree or elan of sorts) which would have mac learning, then Matt's question comes into play. -Aaron -Original Message- From:

Re: Strange connectivity issue Frontier EVPL

2020-11-06 Thread Matt Hoppes
Could you be running up against a MAC table limit on the circuit? On 11/6/20 11:59 AM, Jay Hennigan wrote: We have a strange issue that defies logic. We have a NNI at our POP with Frontier serving as an aggregation circuit with different customers on different VLANs. It's working well to severa

Strange connectivity issue Frontier EVPL

2020-11-06 Thread Jay Hennigan
We have a strange issue that defies logic. We have a NNI at our POP with Frontier serving as an aggregation circuit with different customers on different VLANs. It's working well to several customers. Bringing up a new customer shows roughly half of the IP addresses unreachable across the link

Re: CNAME records in place of A records

2020-11-06 Thread Matthias Luft via NANOG
While the change from A to CNAME itself is probably not based on security considerations, a CNAME pointing to a CDN or similar can result in future security issues, i.e. you want to closely monitor your externally pointing CNAMEs when you get rid of external services: https://www.hackerone.com/

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2020-11-06 Thread NANOG News
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Re: CNAME records in place of A records

2020-11-06 Thread Kevin East
Are you using A records in a domain you own and pointing at their IPs? I'm not aware of any security vulnerability exploiting A vs CNAME. If they are hosting on a domain they own vs one you own, the use of a CNAME would allow them to change the A record IP without less impact to you, it would also

Re: plea for comcast/sprint handoff debug help

2020-11-06 Thread Tony Tauber
On Fri, Nov 6, 2020 at 1:28 AM Christopher Morrow wrote: > I think a way forward here is to offer a suggestion for the software > folk to cogitate on and improve? >"What if (for either rrdp or rsync) there is no successful > update[0] in X of Y attempts, >attempt the other protocol to sy

Re: plea for comcast/sprint handoff debug help

2020-11-06 Thread Randy Bush
> Admittedly someone (randy) injected a pretty pathological failure > mode into the system really? could you be exact, please? turning an optional protocol off is not a 'failure mode'. randy

Re: CNAME records in place of A records

2020-11-06 Thread Dovid Bender
Interesting. We got a few requests at the same time which is what made we wonder. I wanted to make sure that there wasn't something I was missing. On Fri, Nov 6, 2020 at 5:25 AM Ray Orsini wrote: > It's not a security thing. We do this with the the resellers who white > label our VOIP. CNAMEs a

Re: CNAME records in place of A records

2020-11-06 Thread Ray Orsini
It's not a security thing. We do this with the the resellers who white label our VOIP. CNAMEs allow us to be flexible with our own hosts and infrastructure without having all of our resellers change DNS records. Ray Orsini Chief Executive Officer OIT, LLC 305.96

Re: CNAME records in place of A records

2020-11-06 Thread Jun Tanaka
Hi, They will set a dynamic IP address on the server, or use a CDN service. --- Jun Tanaka [do...@telecurve.com - Fri, 6 Nov 2020 05:07:26 -0500]: > Hi, > > Sorry if this is a bit OT. Recently several different vendors (in > completely different fields) where they white label for us asked us t

CNAME records in place of A records

2020-11-06 Thread Dovid Bender
Hi, Sorry if this is a bit OT. Recently several different vendors (in completely different fields) where they white label for us asked us to remove A records that we have going to them and replace them with CNAME records. Is there anything *going around* in the security aranea that has caused thi