#COGENT

Kevin Karhan :verified:kkarhan@infosec.space
2025-05-29

@f2k1de @Lili keine Ahnung, aber soweit ich weiß machen die massives #TrafficShaping und #QoS weil #Telekom hat halt so schlechtes #Peering dass deren de-facto #Upstreams (#Cogent & #Level3) die verklagt hatten.

  • Das #DTAG-Kernnetz ist abends so heftig verstopft dass vielerorts garnix geht!
Kevin Karhan :verified:kkarhan@infosec.space
2024-12-27

@qwertyoruiop the fact that #DTAG has a testing server that fast is surprising.

Normally #DeutscheTelekom's core network is so #underpeered that they got sued by #Cogent & #Lumen nee. #Level3 for insufficient capacity and abusing them as #upstream|s.

In return, I'm surprised they only got #10G there. I would've already expected #100G and #OM5 fiber everywhere...

#DeutscheTerrorkom #38C3

okanogen VerminEnemyFromWithinOkanogen
2024-11-22

Spent a full week trying to get answers from about what is doing with power maintenance & setting up our dual feed power.
Me: Are you supplying the PDUs?
Them...
Them...
Them the day before: No. You are.
Me: YOU'VE GOTTA BE KIDDING ME!
Scramble scramble FOUND!
Me: You'll be there to hook it up.
Them: No. You're doing that.
Me: So i have authorization to lift the floor & energize our PDUs?
Them: Yes, but you dont need to, because you are on the line that isnt going down.

okanogen VerminEnemyFromWithinOkanogen
2024-11-04

That was special. Having to scramble to bring down a hundred virtual machines, then the hardware, right in the middle of restoring from backups. Thanks , you lying, incompetent, fucking shitbags. Let me tell you the odds we renew our contract. Zero, and sub-zero. Did we save money on your Kmart pricing? Well, the old saying is true, there's nothing more expensive than a great deal.

okanogen VerminEnemyFromWithinOkanogen
2024-11-04

weekend from hell.
Thanks . Thanks for telling us the "testing" which "shouldn't affect our colo service" was actually a planned power outage that your operations people KNEW would bring down all hardware in our racks on a Friday evening.
Oh! And thanks again, for sending out an all clear on Friday night & again on Saturday, then Sunday, while in hour 30 of restoring our entire infrastructure, being told randomly by a contractor the power was going down AGAIN in 15 minutes.

2024-10-16

Is it reprehensible to offer #Cogent Paid #Peering as a Non-Profit #network / #Freifunk AS

80 cents / Mbit/s with 10G Flat is fair, isn't it?

The #bigCorp media has been doing that for him for years. They usually dont play #tRump clips verbatim. they paraphrase him so that he sounds more reasonable.
They are cleaning up his speech.

That is why he can claim that, it his normal #projection and #confession .
It bothers him that it is not necessary for VP #Harris. She speaks in complete sentences and can make a #cogent argument. (Appealing to the intellect or powers of reasoning; convincing: synonym: valid.
"a cogent argument.")

卡拉今天看了什麼ai_workspace@social.mikala.one
2024-09-01

A root-server at the Internet’s core lost touch with its peers. We still don’t know why. | Ars Technica

Link
📌 Summary: 最近,互聯網的域名系統中一個核心伺服器因不明故障與其12個根伺服器出現不同步情況,造成全球穩定性和安全性問題。這個伺服器由Cogent Communications維護,屬於13個地理分散的根伺服器之一,這些伺服器確保了設備間的尋址功能。在故障發生後,該伺服器的更新停滯達四天,導致DNSSEC機制下的重要加密密鑰不同步,增加了攻擊風險。問題直到第四天才完全解決。

🎯 Key Points:
- 根伺服器的運作方式是將人類可讀的網域名稱轉換為IP地址,涉及多個查詢階段。
- 根伺服器在互聯網中的角色至關重要,確保了設備間的正確連接,並防止攻擊如DNS快取中毒。
- 13個根伺服器通常保持同步,但此事件發生了不正常的延遲情況。
- 在故障期間,根伺服器之間的更新出現了不一致,這在網民中引發了擔憂。
- 問題在第四天獲得解決,但其原因仍未明確。

🔖 Keywords: #根伺服器 #域名系統 #DNSSEC #安全性 #Cogent

Stéphane Bortzmeyerbortzmeyer@mastodon.gougere.fr
2024-08-27

Dans un objet RIPE :

remarks: **Email originating from cogent sales will be auto forwarded to ripe and arin abuse**

#Cogent #spam

Colin Cogle :verified:colin@colincogle.name
2024-08-08

#Cogent had an outage in central and Southern California. Working for an #MSP, and with it being after hours, we have discussed the important things: client response, IP over Avian Carriers (RFC 1149), apocalypse scenarios, backup ISPs, resorting to cannibalism and whether or not we should wait before a formal declaration of an apocalypse, #IPv6 over Avian Carriers (RFC 6214), and— oh wait, it’s back up.

#sysadmin #iiitttttt

2024-05-28

"Pssssst! Want some more #IPv4 addresses?
We got some nice long-term leases here."

That's pretty much the gist of an unsolicited email today from a very eager #Cogent #CogentCo sales rep.

Benjamin Carr, Ph.D. 👨🏻‍💻🧬BenjaminHCCarr@hachyderm.io
2024-05-25

A #rootserver at the #Internet’s core lost touch with its peers. We still don’t know why.
For 4 days, the c-root server maintained by #Cogent lost touch with its 12 peers.
This server, maintained by Internet carrier Cogent Communications, is one of the 13 root servers that provision the Internet’s root zone, which sits at the top of the hierarchical distributed database known as the domain name system, or #DNS.
arstechnica.com/security/2024/

eicker.news ᳇ tech newstechnews@eicker.news
2024-05-24

»A #rootserver at the #Internet’s #core lost touch with its peers. We still don’t know why: For 4 days, the #crootserver maintained by #Cogent lost touch with its 12 peers.« #DNS arstechnica.com/security/2024/ #tech #media

2024-05-23

I was poking about the root servers web pages a few days ago and this explains why I couldn't reach Cogent's C root server and why other root servers had a sudden spike in traffic.

arstechnica.com/security/2024/

#internet #rootservers #cogent

C root server queries.H Root serverK root server
2024-05-22

Looks like #Cogent fixed C-root lag. At least from where I look at it:

$ check_soa -m .
SOA OK - 13 nameservers, serial: 2024052202 | time=0.2
92613s;;;;

Hé bah #pasbravo a #COGENT qui laisse ses DC tellement pourrir que de l'eau s'infiltre et fait tomber les équipements.
Ca fait depuis samedi midi (donc 3 bons jours révolus) que ça peut pas être relancés en sécu.

On dit quoi à ces gens qui s'en mettent plein les fouilles ?

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