Re: About emails impersonating Path Network

2023-02-07 Thread Rafael Possamai
I've found this article before and implemented it for domains that we own, but do not use for e-mail purposes. https://www.gov.uk/guidance/protect-domains-that-dont-send-email Might be worth checking it out. Cheers, Rafael - Original message - From: Konrad Zemek To: nanog@nanog.org Su

Telia->ATT at 350 Cermak

2022-08-11 Thread Rafael Possamai
After some time monitoring/troubleshooting, we are seeing what looks like congestion between AS1299 and AS7018 at 350 Cermak during typical peak hours. Could someone please reach out off-list if possible? Much appreciated. Thanks, Rafael

Re: HE.net and BGP Communities

2022-07-25 Thread Rafael Possamai
>I wish they'd add one more that turns off their "prefer routes learned from a >customer" rule. I'm having to split my blocks in >half and announce them >that way to get them to send my traffic directly to me through our IX peering >session as opposed to >one of my transit providers. >I'd rath

Re: Verizon no BGP route to some of AS38365 (182.61.200.0/24)

2022-07-21 Thread Rafael Possamai
>but that it would be incumbent on Verizon to do the legwork to fix it since >they are the ones who know their peering >agreements and have these contacts. >Unfortunately it seems like policy that Verizon pushes any issues that aren't >internal >routing issues to an external party, but surely th

RE: Aftermarket switches that were manufactured in any sort of quantity?

2022-06-09 Thread Rafael Possamai
This may sound bad at first but look into FS.com if you're in a pinch. They may not be seen as the typical true enterprise grade (I don't know?) but you can probably buy a a new one and a new spare for the price of one overpriced used switch. From: NANOG On Behalf Of Drew Weaver Sent: Thursd

RE: Github/gist list of modern telemetry/networking polling tools

2022-05-12 Thread Rafael Possamai
Here is a list: https://github.com/kahun/awesome-sysadmin#monitoring Personally, I've used smokeping for over a decade (mrtg works too, or rrd and a cron job), as well as librenms/prtg and as of the last couple of years a software "stack" such as telegraf+influxdb+grafana, although that's more

Re: Texas internet connectivity declining due to blackouts

2021-02-17 Thread Rafael Possamai
Buried high voltage lines require expensive/complex insulation (oil, etc). It's really expensive to build and to maintain these at enormous scale like the continental USA. Not saying it's not possible, but definitely challenging. Repairing damage to these lines is a lot more complicated than spl

Re: ISPs are hit hardest by COVID-19 disruption

2020-08-07 Thread Rafael Possamai
This reminded me of a quote I read a long time ago: "Most people use statistics like a drunk man uses a lamppost; more for support than illumination"

Re: BGP route hijack by AS10990

2020-08-03 Thread Rafael Possamai
To your point with regards to multiple failures combined causing an outage, here's some basic reading on the Swiss cheese model: https://en.wikipedia.org/wiki/Swiss_cheese_model >From over here it looks like the legacy filter was a latent failure, and the >BGP automation from the downstream pe

Re: CloudFlare Issues?

2020-07-19 Thread Rafael Possamai
Noticed high latency from some smokeping instances from about 16:10 until 16:35 (central time). One of the worst variances was from ~20ms to upwards of 100ms RTT.

Re: Wifi Calling Firewall Holes to Punch

2020-07-19 Thread Rafael Possamai
Also do wifi calls from Android phone on VZW behind NAT, with no issues. I do have a "network extender" which has GPS link and ethernet (also behind NAT) and it does give me 5 bars around the house (up to 70mbps ish of download over LTE). Now, your NAT setup could possibly interefere? In my ca

Re: MX204 Rails

2020-07-16 Thread Rafael Possamai
Doesn't the mx204 have rackmount brackets rather than rails?

Re: Citrix Sales Reps?

2016-03-23 Thread Rafael Possamai
I wonder if the actual support service will be the same later on. *Rafael Possamai* Founder & CEO at E2W Solutions *office:* (414) 269-6000 *e-mail:* raf...@e2wsolutions.com On Wed, Mar 23, 2016 at 3:25 AM, Paul Stewart wrote: > You too ? I gave up ... after calling their local

Re: Why the US Government has so many data centers

2016-03-23 Thread Rafael Possamai
Circuit utilization, capacity and availability shouldn't be calculated separately in a data center environment. If you look at each separately you risk making some expensive mistakes. *Rafael Possamai* Founder & CEO at E2W Solutions *office:* (414) 269-6000 *e-mail:* raf...@e2wsolutions

Re: ICYMI: FBI looking into LA fiber cuts, Super Bowl

2016-01-19 Thread Rafael Possamai
I fail to see how drones relate to fiber cuts and the superbowl. Did the article author just throw that in there? The news helicopter getting aerial footage also poses a risk, so not sure what's special about drones. On Tue, Jan 19, 2016 at 2:42 PM, Alain Hebert wrote: > Well, > > ( In c

Re: verizon fios bounced a legit private email of mine telling me it was spam and they would not allow it

2016-01-14 Thread Rafael Possamai
What a disgrace. On Wed, Jan 13, 2016 at 3:55 PM, Dan Hollis wrote: > This is what's going on at verizon. > > http://www.spamhaus.org/news/article/726/ > > -Dan > >

Re: Best Source for ARIN Region /24

2016-01-11 Thread Rafael Possamai
/36 initial IPv6 direct allocation, > rather than the default /32 direct allocation. > > That seems to balance toward buying an existing /24. > > > On Jan 11, 2016, at 8:00 PM, Rafael Possamai > wrote: > > If you apply for an IPv6 block, as an ISP, and you have the inte

Re: Best Source for ARIN Region /24

2016-01-11 Thread Rafael Possamai
If you apply for an IPv6 block, as an ISP, and you have the intention of truly utilizing it, then you can apply for a /24 to facilitate that transition. It will cost you about $1500 or so, which is about half of what a /24 is going for in the transfer market. Thing is, if you take the IPv6 block

Re: Internap route optimization

2015-11-06 Thread Rafael Possamai
A few years ago I had a couple boxes in a datacenter in Chicago that had its traffic optimized by Internap. Latency wise, it was always the lowest to my other applications, compared to other locations I had on-line. I am not sure what other benefits it brought aside from lower latency. One thing to

Re: Cogent BGP Woes

2015-10-16 Thread Rafael Possamai
Similar to low-cost airlines, where you have to pay for a drink and a 4oz bag of peanuts. On Fri, Oct 16, 2015 at 3:36 AM, Mike Hammett wrote: > Nickles and dimes... > > > > > - > Mike Hammett > Intelligent Computing Solutions > http://www.ics-il.com > > > > Midwest Internet Exchange > http:

Re: ARIN Region IPv4 Free Pool Reaches Zero

2015-09-24 Thread Rafael Possamai
T-Mobile implemented 464XLAT successfully, but I have no idea how long they will still depend on IPv4 because of that setup. On Thu, Sep 24, 2015 at 2:41 PM, Steve Mikulasik wrote: > Let's just hope carriers don't try to fix IPv4 instead of going to IPv6. > I'd like my children to grow up in a w

Re: Level(3) ex-twtelecom midwest packet loss (4323)

2015-08-26 Thread Rafael Possamai
I have been seeing the same issues, but haven't heard anything back yet. It has improved in the last 30 minutes or so, see below. http://imgur.com/KVAzetA On Wed, Aug 26, 2015 at 4:34 PM, Ryan K. Brooks wrote: > Seeing packet loss on AS4323 since 2:30 Central time. NOC is > unresponsive to

Re: Data Center operations mail list?

2015-08-21 Thread Rafael Possamai
seen any real issues. > Hundreds of people on the list posting hundreds (total, not each) of > messages per day. No complaints. *shrugs* > > > > > - > Mike Hammett > Intelligent Computing Solutions > http://www.ics-il.com > > - Original Message

Re: Data Center operations mail list?

2015-08-21 Thread Rafael Possamai
Quick update: I moved away from Amazon SES to a private smtp server provided by Chris, who is also helping moderate the list. I left Amazon SES configured as a backup since the bounce rate after thousands of emails peaked at only 0.08% Thanks! Rafael On Thu, Aug 20, 2015 at 10:43 AM, Rich Ku

Re: Data Center operations mail list?

2015-08-20 Thread Rafael Possamai
Hi Rich, Thank you for letting me know, I expected Amazon to actually take care of spammers and not let it be a free for all. I can definitely switch it elsewhere, so please let me know what you have in mind. I can let the mailman server do deliveries as well, so that's a second option. Best re

Re: Data Center operations mail list?

2015-08-18 Thread Rafael Possamai
I actually suggested this to Chris while discussing what to have in the website, I definitely think it would be nice to have a platform to help plan and schedule local events for social and networking purposes. I am working with a few people on designing a website, so I am guessing some time in Se

Re: Drops in Core

2015-08-15 Thread Rafael Possamai
: > Why do you say that Layer 1 issues in the last mile would be very high? > How is it any different from the first mile? > > On Sat, Aug 15, 2015 at 10:56 PM, Rafael Possamai > wrote: > >> Hi Glen, >> >> If you first list the causes of a dropped packet, then you c

Re: Drops in Core

2015-08-15 Thread Rafael Possamai
Hi Glen, If you first list the causes of a dropped packet, then you can figure out how likely they are at different points in time (first\last\peer\etc) by making some assumptions. Here's an **example**: *Cause | Location | Likelihood* Congestion | Last mile | Low Congestion | First mile | Low C

Re: Data Center operations mail list?

2015-08-14 Thread Rafael Possamai
Thanks! That works for Apache2.2. For those interested that are using Apache2.4, make this change: -Order deny,allow -Deny from all +Require all denied The rest should be the same. Here is some more info: http://httpd.apache.org/docs/2.4/upgrading.html Best, Rafael On Fri, Aug 14, 2015 at 2

Re: Data Center operations mail list?

2015-08-12 Thread Rafael Possamai
ing... I just went to the web site to subscribe and I received an > email that I was already subscribed. > > I don't remember doing that... So how did this happen?? > > Robert > > > On Wed, 12 Aug 2015 07:33:05 -0500 > Rafael Possamai wrote: > >> I

Re: Data Center operations mail list?

2015-08-12 Thread Rafael Possamai
I was actually surprised with how many people subscribed already. I think we are close to 100 already in less than 24 hours. I could use some help drafting some basic mailing list rules (no spam, no soliciting, etc) and if anyone has any suggestions, please let me know. On Wed, Aug 12, 2015 at 1

Re: Data Center operations mail list?

2015-08-11 Thread Rafael Possamai
Haha, are you saying some people out there put nanog on their resume? I thought 2008 was long gone. On Tue, Aug 11, 2015 at 10:12 PM, Randy Bush wrote: > > Rather than fragmenting further, I'd suggest building up demand first > > on existing infrastructure. If it gets to the size of NANOG and >

Re: Data Center operations mail list?

2015-08-11 Thread Rafael Possamai
The list just went live at "lists.nadcog.org". I am open to any suggestions, just let me know. When you say move forward with the concept, do you mean get the organization started as well, not just the mailing list? Thanks, Rafael On Tue, Aug 11, 2015 at 7:10 PM, Mike wrote: > On 8/11/2015 3:

Re: Data Center operations mail list?

2015-08-11 Thread Rafael Possamai
What is the mailman URL? On Tue, Aug 11, 2015 at 10:15 AM, Marcin Cieslak wrote: > On Tue, 11 Aug 2015, James Downs wrote: > > > > > > On Aug 11, 2015, at 06:01, Rafael Possamai wrote: > > > > > style as nanog and registered the nadcog.org domain. > &g

Re: Data Center operations mail list?

2015-08-11 Thread Rafael Possamai
; > > > On Aug 11, 2015, at 06:01, Rafael Possamai wrote: > > > > > style as nanog and registered the nadcog.org domain. > > > > Nad Cog? > > North American Data Center Operations Group, perhaps? > > -- > Mike Andrews, W5EGO > mi...@mikea.ath.cx > Tired old sysadmin >

Re: Data Center operations mail list?

2015-08-11 Thread Rafael Possamai
I am setting one up and invited Chris to moderate it with me. I've always looked for a list that covers that topic as well. I followed the same name style as nanog and registered the nadcog.org domain. On Mon, Aug 10, 2015 at 8:11 PM, Ryan Finnesey wrote: > Did you come across one? > > Sent from

Re: Leak or legit ? 11/8

2015-08-01 Thread Rafael Possamai
This is interesting, the DoD has a half trillion dollar budget, so not sure what the motivation was to get rid of a /8. On Sat, Aug 1, 2015 at 3:24 AM, Jérôme Nicolle wrote: > Hello, > > Just saw something suprising : 11/8 just came live from AS23352 > (ServerCentral) > http://lg.ring.nlnog.net/

Re: 20-30Gbps UDP 1720 traffic appearing to originate from CN in last 24 hours

2015-07-21 Thread Rafael Possamai
E mode very well :) > > On Tue, Jul 21, 2015 at 4:07 PM, Rafael Possamai > wrote: > > Has anyone tried to implement real-time SQC in their network? You can > > calculate summary statistics and use math to determine if traffic is > > "normal" or if there's a

Re: 20-30Gbps UDP 1720 traffic appearing to originate from CN in last 24 hours

2015-07-21 Thread Rafael Possamai
t; > > > - > Mike Hammett > Intelligent Computing Solutions > http://www.ics-il.com > > - Original Message - > > From: "Rafael Possamai" > To: "Jared Mauch" > Cc: nanog@nanog.org > Sent: Tuesday, July 21, 2015 8:07:34 AM > Subject:

Re: 20-30Gbps UDP 1720 traffic appearing to originate from CN in last 24 hours

2015-07-21 Thread Rafael Possamai
Has anyone tried to implement real-time SQC in their network? You can calculate summary statistics and use math to determine if traffic is "normal" or if there's a chance it's garbage. You won't be able to notice one-off attacks, but anything that repeats enough times should pop up. Facebook uses s

Re: SIP trunking providers

2015-07-20 Thread Rafael Possamai
When I originally posted the thread, I had asked Chicago due to physical proximity, and my assumption being the lesser the number of hops, the lower the probability of running into issues (latency, jitter and congestion). On the other hand, one of my sandboxes are out of Las Vegas and I haven't had

Re: another tilt at the Verizon FIOS IPv6 windmill

2015-07-18 Thread Rafael Possamai
The best way to "complain" is to simply move the service to another provider (when possible). 50 bucks a month of revenue to them is not worth the hassle of having a tech user asking for all sorts of non-standard configs. It shouldn't be that way, but that's how it usually goes. Think about it, eve

Re: Speaking of NTP...

2015-07-16 Thread Rafael Possamai
Depending on how exactly you have these servers configured with relation to one another, small variations from one single source can be augmented down the line. https://en.wikipedia.org/wiki/Propagation_of_uncertainty On Mon, Jul 13, 2015 at 8:17 AM, Matthew Huff wrote: > We have 5 NTP server

Re: in-cabinet PDU safety regs?

2015-07-02 Thread Rafael Possamai
I've referenced article 645 before, but you have to look at anything upstream or downstream of the PDU as well, as the system as a whole needs to be within standards. On Wed, Jul 1, 2015 at 11:42 AM, William Herrin wrote: > Hi Folks, > > Do you know of any regulations, standards or publications

Re: World's Fastest Internet™ in Canadaland

2015-06-27 Thread Rafael Possamai
Good for you. On Sat, Jun 27, 2015 at 6:36 PM, Irwin, Kevin wrote: > Based on our 1Gbps residential customers usage, I believe you just sit at > home and run speedtest all day. > > Sent from my iPhone > > > On Jun 26, 2015, at 2:41 PM, Rafael Possamai wrote: > > >

Re: ARIN just subdivided their last /17, /18, /19, /20, /21 and /22. Down to only /23s and /24s now. : ipv6

2015-06-27 Thread Rafael Possamai
Randy, How long do you think it will take to completely get rid of IPv4? Or is it even going to happen at all? On Sat, Jun 27, 2015 at 4:57 AM, Randy Bush wrote: > the rirs have run out of their free source of short ints to rent to us. > i am sure everyone will move to ipv6 in a week. news at

Re: Re: World's Fastest Internet™ in Canadaland

2015-06-26 Thread Rafael Possamai
015 at 4:56 PM, Mark Andrews wrote: > > In message < > cajb2g-h2cccqud7_bhpoydo+beysyzpy+js2p+hj6ruk0qx...@mail.gmail.com> > , Rafael Possamai writes: > > How does one fully utilize a gigabit link for home use? For a single > person > > it is overkill. Similar to th

Re: World's Fastest Internet™ in Canadaland

2015-06-26 Thread Rafael Possamai
Karl Auer wrote: > On Fri, 2015-06-26 at 13:39 -0500, Rafael Possamai wrote: > > How does one fully utilize a gigabit link for home use? For a single > person > > it is overkill. > > This sentiment keeps popping up. It's a failure of vision. To suggest > that &q

Re: World's Fastest Internet™ in Canadaland

2015-06-26 Thread Rafael Possamai
How does one fully utilize a gigabit link for home use? For a single person it is overkill. Similar to the concept of price elasticity in economics, going from 50mbps to 1gbps doesn't necessarily increase your average transfer rate, at least I don't think it would for me. Anyone care to comment? Ju

Re: Level3 NOC Contact

2015-06-26 Thread Rafael Possamai
The portal should have some stats where you can do basic troubleshooting. It's really easy to get registered on the portal, you just need account number and customer name (which is scary, but go figure...). On Fri, Jun 26, 2015 at 11:10 AM, Michael Loftis wrote: > AFAIK theres no longer any

Re: Any Verizon datacenter techs about?

2015-06-25 Thread Rafael Possamai
Be prepared to drop a lot of money for colocation with Verizon. Also, quoting process is rather long and you will have to sign a NDA most likely, which just makes it even more fun. For the size of your project I'd pick a provider that focuses on colocation for small and medium businesses and is eas

Re: Residential VSAT experiences?

2015-06-23 Thread Rafael Possamai
Reading about SIP made it seem like latency alone is not an issue, aside from delays which impact verbal communication as previously mentioned. What is going to be much worse is jitter and packet loss. You can eventually get used to a significant delay, but dropped calls and chopped sound renders t

Re: Data Center Network Monitoring with TAPs

2015-06-22 Thread Rafael Possamai
Here's a recent forum thread that discussed the same exact topic. You might find some insight: http://www.reddit.com/r/networking/comments/3aip3p/data_center_network_monitoring/ On Sat, Jun 20, 2015 at 11:06 AM, Mitch Howards wrote: > Hello All, > > Was wondering what folks are using to monitor

Re: Whats' a good product for a high-density Wireless network setup?

2015-06-21 Thread Rafael Possamai
No wonder IPv4 is depleted. People's shoes have a MAC address nowadays... On Sun, Jun 21, 2015 at 8:32 AM, Rob Seastrom wrote: > > Stephen Satchell writes: > > > ... They just couldn't believe that 300 people could max out their system > > ... > > Last year, the group AVERAGED four devices each

Re: Whats' a good product for a high-density Wireless network setup?

2015-06-20 Thread Rafael Possamai
are far behind on density. Check their case studies. > Em 20/06/2015 13:02, "Rafael Possamai" escreveu: > >> I don't think there's an actual standard for density, at least I am not >> aware of one. Independent of the vendor you use, this guide should

Re: SIP trunking providers

2015-06-20 Thread Rafael Possamai
Thanks everyone for your responses. On Fri, Jun 19, 2015 at 4:40 PM, Rafael Possamai wrote: > Would anyone in the list be able to recommend a SIP trunk provider in the > Chicago area? Not a VoIP expert, so just looking for someone with previous > experience. > > > Thanks, > Rafael >

Re: Whats' a good product for a high-density Wireless network setup?

2015-06-20 Thread Rafael Possamai
I don't think there's an actual standard for density, at least I am not aware of one. Independent of the vendor you use, this guide should be valid at 80% of implementations: http://www.cisco.com/c/en/us/products/collateral/wireless/aironet-1250-series/design_guide_c07-693245.html On Meraki's web

SIP trunking providers

2015-06-19 Thread Rafael Possamai
Would anyone in the list be able to recommend a SIP trunk provider in the Chicago area? Not a VoIP expert, so just looking for someone with previous experience. Thanks, Rafael

Re: Is it safe to use 240.0.0.0/4

2015-06-17 Thread Rafael Possamai
Using CGNAT doesn't sound right either, although I haven't read the whole thing, but it seems reasonable to use that block for CGNAT only. https://tools.ietf.org/html/rfc1918 On Wed, Jun 17, 2015 at 4:13 PM, Tony Wicks wrote: > Use 100.64.0.0/10, this is the CGNAT reserved range.I would most >

Re: Anycast provider for SMTP?

2015-06-17 Thread Rafael Possamai
https://www.google.com/intl/en/ipv6/statistics.html On Mon, Jun 15, 2015 at 8:26 PM, Matt Palmer wrote: > On Mon, Jun 15, 2015 at 05:07:22PM -0700, Dave Taht wrote: > > On Mon, Jun 15, 2015 at 5:00 PM, Randy Bush wrote: > > >> "What about IPv6? We have a plan! We plan to be dead before custom

Re: Anycast provider for SMTP?

2015-06-16 Thread Rafael Possamai
Any luck on a DNS based solution? On Mon, Jun 15, 2015 at 12:50 PM, Joe Hamelin wrote: > I have a mail system where there are two MX hosts, one in the US and one in > Europe. Both have a DNS MX record metric of 10 so a bastardized > round-robin takes place. This does not work so well when one

Re: Anycast provider for SMTP?

2015-06-15 Thread Rafael Possamai
ning up for and maintaining an AS, but you could improve your uptime significantly. On Mon, Jun 15, 2015 at 2:52 PM, Joe Hamelin wrote: > On Mon, Jun 15, 2015 at 12:45 PM, Rafael Possamai > wrote: >> >> >> The other step would be to setup HA in each SMTP node (US and Fra

Re: Anycast provider for SMTP?

2015-06-15 Thread Rafael Possamai
I could be mistaken, but you might get all of this done with AWS's Route53. I would read this: http://docs.aws.amazon.com/Route53/latest/DeveloperGuide/routing-policy.html#routing-policy-geo The other step would be to setup HA in each SMTP node (US and France) such as LB or Failover. Just an idea.

Re: AS4788 Telecom Malaysia major route leak?

2015-06-14 Thread Rafael Possamai
Well, I was wondering the same. I am guessing it depends on the SLA contract since they are all very unique and specific. I assume they would have to, granted the issue lasted for a couple hours. Now, it depends on how they define the outage. A fiber cut that yields a customer's service unusable wo

Re: AS4788 Telecom Malaysia major route leak?

2015-06-14 Thread Rafael Possamai
wrote: > SLAs are part of a contract, and thus only apply to the parties of the > contract. There are no payments due to other parties. The Internet is a > "best effort" network, with zero guarantees. > > -mel beckman > > On Jun 14, 2015, at 4:06 PM, Rafael Possam

Re: AS4788 Telecom Malaysia major route leak?

2015-06-14 Thread Rafael Possamai
Does anyone know if there's an official "ruling" as to who gets to pay for the SLA breaches? On Sun, Jun 14, 2015 at 5:56 PM, Mel Beckman wrote: > Raymond, > > But you said "A simple 'sorry' would have done." Now you're asking for > lots more detail. Why the change? > > -mel beckman > > > On Ju

Re: Open letter to Level3 concerning the global routing issues on June 12th

2015-06-13 Thread Rafael Possamai
A lot of these things are for show only.. Like a big corporation donating to non-profits and sponsoring "feel good" events. You can see that a lot of these same businesses also lobby Washington like crazy, so there you go... This was either an isolated incident or they really don't care much. On S

Hardware monitoring

2015-06-13 Thread Rafael Possamai
Hi everyone, I know this is slightly off-topic, but since it's still related to the list, I thought I'd give it a try. I am wondering what systems are out there (open source, preferably) for data collection and processing of hardware health data (temperature, CPU clock, fan speeds, etc). Ideally b

Re: Open letter to Level3 concerning the global routing issues on June 12th

2015-06-13 Thread Rafael Possamai
Something about Malaysia, first the airplanes... now BGP leaks? On Fri, Jun 12, 2015 at 10:32 AM, Martin Millnert wrote: > Dear Level3, > > The Internet is a cooperative effort, and it works well only when its > participants take constructive actions to address errors and remedy > problems. > Yo

Re: eBay is looking for network heavies...

2015-06-11 Thread Rafael Possamai
+1 for experience.. being able to teach yourself just about anything drops you into the top 20% of any industry (with maybe a few exceptions). one thing I noticed is that the best professionals I met out there are just as good with people as they are with routers and console screens. IT is usually

Re: FastNetMon 1.1.2 - open source solution for DoS/DDoS mitigation

2015-06-04 Thread Rafael Possamai
You could look into LXD for that type of deployment. On Thu, Jun 4, 2015 at 12:55 PM, Pavel Odintsov wrote: > Brilliant idea! But in Docker we could offer only sflow and sflow. Port > mirror capture need support from the kernel side. Will try shortly! > > On Thursday, June 4, 2015, Roberto Bertó

Re: Should I Reboot, and Why? (was Re: [RDD] No Play out on Cart Wall)

2015-06-04 Thread Rafael Possamai
I also reboot for kernel updates! On Thu, Jun 4, 2015 at 11:57 AM, Jay Ashworth wrote: > - Original Message - > > From: "Cowboy" > > > On Sunday 31 May 2015 03:49:10 pm Graham Wilman wrote: > > > > after getting the play out working on clienta terminal for the past > > > 6 days > > > th

Re: AWS Elastic IP architecture

2015-06-03 Thread Rafael Possamai
we are starting to waste packets arguing over some private intellectual property On Wed, Jun 3, 2015 at 3:24 PM, Christopher Morrow wrote: > On Wed, Jun 3, 2015 at 7:56 AM, Owen DeLong wrote: > > For example, let’s say you have 20 machines for whom you want to allow > inbound SSH access. In the

Re: stacking pdu

2015-05-29 Thread Rafael Possamai
You could run a PDU in paralallel so that you don't use more current than the wires are rated for (although the PDU should trip the circuti anyways in case you overload it). Only problem is matching the receptacles. You probably don't want to half-ass it, so I'd just add an extra PDU and run an ext

Re: Capacity/transit costs vs growth

2015-05-27 Thread Rafael Possamai
If I understand your question correctly, the answer is: it depends. You can model the cost of delivering your service and keep track of three types of cost: fixed, variable and marginal. Here is a really good video that explains these: https://youtu.be/bBQVaRnHqLs You might find an industry avera

Re: gmail security is a joke

2015-05-27 Thread Rafael Possamai
"Security is an illusion" - Confucius probably On Wed, May 27, 2015 at 8:42 AM, Joel Maslak wrote: > I also suspect not every telco validates number porting requests against > social engineering properly. > > A telephone number isn't something you have, it is something your provider > has. > > O

Re: gmail security is a joke

2015-05-27 Thread Rafael Possamai
You can also register a U2F key. On Wed, May 27, 2015 at 3:17 AM, wrote: > On Wed, 27 May 2015 09:13:47 +0530, Anil Kumar said: > > that link, since I have two-step verification set up, I was presented > > with a demand for a number provided by the Google Authenticator > > app on my phone. I pro

Re: Peering and Network Cost

2015-05-21 Thread Rafael Possamai
James, curious to know... what size ISPs are they? In the last few years with the larger ones it has always been about lowering cost and increasing revenue, which throws the original idea of peering out the window (unless you are willing to pay). On Thu, May 21, 2015 at 4:52 AM, James Bensley wro

Re: Low Cost 10G Router

2015-05-20 Thread Rafael Possamai
Since you are considering multiple options, I'd build a decision matrix. You can put down all the requirements, score each option, and then normalize it to give each a final score. After that you can calculate some other things such as throughput per dollar, etc. http://asq.org/learn-about-quality

Re: Low Cost 10G Router

2015-05-19 Thread Rafael Possamai
Oops, Cisco ASR 1k series might not cut it, you can take a look at their 9k seriers: http://www.cisco.com/c/en/us/products/routers/asr-9000-series-aggregation-services-routers/models-comparison.html On Tue, May 19, 2015 at 12:22 PM, Colton Conor wrote: > What options are available for a small, l

Re: Low Cost 10G Router

2015-05-19 Thread Rafael Possamai
Here is what I found on Google about Cisco's options: http://www.cisco.com/c/en/us/products/routers/asr-1000-series-aggregation-services-routers/models-comparison.html And when it comes to Juniper, you might be able to get it done with MX40 (look at their options, there are different combinations

Re: Route Optimization Products

2015-05-15 Thread Rafael Possamai
I've been a customer before of a datacenter in Chicago that uses/used Internap's optimized routes and latency was always better than in comparison to other locations I tested against. That was around 2011 or 2012. On Fri, May 15, 2015 at 10:19 AM, Mike Hammett wrote: > What is out there for rout

Re: Route Optimization Products

2015-05-15 Thread Rafael Possamai
Internap also has a product called MIRO, although I am not sure how it differs from FCP. On Fri, May 15, 2015 at 10:19 AM, Mike Hammett wrote: > What is out there for route optimization products? I can think of Noction > (no inbound) or Internap FCP (old). > > > > - > Mike Hammett > Intellig

Re: Rasberry pi - high density

2015-05-12 Thread Rafael Possamai
milar). I'd want one power cable and one network cable per > backplane board if my requirements allowed it. Stick it all in a nice card > cage and you're done. > > As for performance per watt, I'd be surprised if this beat a modern video > processor for the right worklo

Re: Rasberry pi - high density

2015-05-11 Thread Rafael Possamai
s the Pi win? > > -- > Hugo > > > On Mon 2015-May-11 17:08:43 -0500, Rafael Possamai > wrote: > > Interesting! Knowing a pi costs approximately $35, then you need >> approximately $350 to get near an i5.. The smallest and cheapest desktop >> you can get that would

Re: Rasberry pi - high density

2015-05-11 Thread Rafael Possamai
Interesting! Knowing a pi costs approximately $35, then you need approximately $350 to get near an i5.. The smallest and cheapest desktop you can get that would have similar power is the Intel NUC with an i5 that goes for approximately $350. Power consumption of a NUC is about 5x that of the raspbe

Re: Rasberry pi - high density

2015-05-09 Thread Rafael Possamai
>From the work that I've done in the past with clusters, your need for bandwidth is usually not the biggest issue. When you work with "big data", let's say 500 million data points, most mathematicians would condense it all down into averages, standard deviations, probabilities, etc, which then beco

Re: Thousands of hosts on a gigabit LAN, maybe not

2015-05-08 Thread Rafael Possamai
- The more switches a packet has to go through, the higher the latency, so your response times may deteriorate if you cascade too many switches. Legend says up to 4 is a good number, any further you risk creating a big mess. - The more switches you add, the higher your bandwidth utilized by broadc

Re: Question about co-lo in APAC region

2015-05-06 Thread Rafael Possamai
Personal opinion: developing countries tend to have unstable utility service (power is what matters here), so your DC of choice in India should be Tier 4 preferably, which are hard to find and really expensive. Budget allowing, I'd stick to Hong Kong, Shangai or Singapore as you mentioned initially

Re: ADSL Line Extenders

2015-04-30 Thread Rafael Possamai
with ability to > go higher when pairs are bundled. Adtran should be the 1st place to look at. > > Good luck, Shimon > > > -Original Message- > > From: Rafael Possamai [mailto:raf...@gav.ufsc.br] > > Sent: Wednesday, April 29, 2015 17:37 > > To: Jean-Francois

Re: ADSL Line Extenders

2015-04-29 Thread Rafael Possamai
Semi-related question: in instances like this, wouldn't a point-to-point link provide larger throughput and be less expensive? Unless you are talking about several subscribers that are already installed and operating. Depending on the situation, it might make sense to set a few sectorial antennas a

Re: rack cable length

2015-04-17 Thread Rafael Possamai
Hi Shawn, If you don't leave slack, you can't really pull the server out of the RU for maintenance (hot swaps, etc). Your best choice is to purchase cable management trays if that makes sense (Dell servers usually come with those). Otherwise you just need to deal with the loops and whatnot the be

Spam coming from (possibly) GoDaddy servers - anyone on the list?

2015-03-10 Thread Rafael Possamai
Received some fake FedEx emails coming from "secureserver.net" servers that afaik belong to GoDaddy. I can give more details if someone speaks up. GMail anti-spam only picked up a few of these, others went straight through to inbox. Regards, Rafael

Re: Comcast Support (from NANOG Digest, Vol 84, Issue 23)

2015-02-24 Thread Rafael Possamai
​ On Tue, Feb 24, 2015 at 10:27 AM, Kain, Rebecca (.) wrote: > Ah, Comcast support. Those people who keep calling my Ford Motor Company > phone, to threaten to shut off service to my home, which I don't have (I > have uverse). They keep saying they will take my Ford number off the > account (w

Re: Intrusion Detection recommendations

2015-02-14 Thread Rafael Possamai
, CARP, etc, which requires decent amount of knowledge. If you use newer NICs, most likely will need to go with 10.0 or higher, which requires constant updates/patches since it's new release. On Sat, Feb 14, 2015 at 11:31 AM, BPNoC Group wrote: > On Fri, Feb 13, 2015 at 6:45 PM, Rafael

Re: Intrusion Detection recommendations

2015-02-13 Thread Rafael Possamai
13, 2015 at 02:45:46PM -0600, Rafael Possamai wrote: > > I am a huge fan of FreeBSD, but for a medium/large business I'd > definitely > > use a fairly well tested security appliance like Cisco's ASA. > > Closed-source software is faith-based security. > > ---rsk >

Re: Intrusion Detection recommendations

2015-02-13 Thread Rafael Possamai
I am a huge fan of FreeBSD, but for a medium/large business I'd definitely use a fairly well tested security appliance like Cisco's ASA. Depending on the traffic you have on your fiber uplink, you can get a redundant pair of ASAs running for less than $2,000 in the US. I just find it less stressful

Re: [OT] Re: Intellectual Property in Network Design

2015-02-13 Thread Rafael Possamai
Thank you for looking up facts, laws, etc... The rest is merely opinion, and wouldn't necessarily help someone trying to protect their network designs. On Fri, Feb 13, 2015 at 11:25 AM, wrote: > On Fri, 13 Feb 2015 10:28:25 -0500, William Herrin said: > > > I have to disagree with you there. Thi

Re: Comcast Static IP Changed With New Modem?

2015-02-11 Thread Rafael Possamai
I've had a similar mistake happen with TWC. It's most likely a glitch in their config system which should use the gateway's mac address in order to assign a static IP on the docsis modem. Tech support should figure this out pretty quick without escalating it much further. I've had an instance where

Re: abuse reporting tools

2014-11-18 Thread Rafael Possamai
Some folks might disagree with this, but if it's an important service that I have running on a network, I will block a series of garbage AS's (closer to /8 the better) at the firewall (not at the edge) and that reduces the headaches by 50%. This isn't practical at the edge, but for system administr

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