kitteh

6 ms·

1.
by kitteh 5y ago
There's another forum where a Jacksonville ARTCC controller echoed they had 15 people call out (not due to some anti vax movement) and had weather looming on top of the military who takes over half their airspace and doesn't give
2.
by kitteh 5y ago
It should be. Also this was covered in a reinvent presentation about the aws network.
3.
by kitteh 5y ago
Inter region traffic always goes over the backbone (this includes EIP to EIP). This also includes going from EC2 to any service like S3 in another region. Except China. China to rest of world is not via backbone.
4.
by kitteh 6y ago
It would revert to not being signed, which routes just fine. You just don't get the additional security benefits. It won't turn it into invalid if I'm following what you are saying.
5.
by kitteh 6y ago
There can be legitimate use cases why a network maybe have a very few amount of prefixes not signed or even invalid: canaries and beacons. For example, running tests to a signed, unsigned and invalid prefix can provide insight into how othe
6.
by kitteh 6y ago
Lack of redundancy due to cost probably has something to do with it. Same issue with internet peering in quite a few cities (no viable 2nd location, costs a lot of money to double up the gear, additona optical transport).
7.
by kitteh 6y ago
AT&T has been pushing really hard on folks in the last year to take early retirement packages that would give you a fraction of what you would have gotten if you stayed on until being eligible. Friend of mine recently took the package a
8.
by kitteh 6y ago
I was a big MaxTNT customer. The cooling on those were interesting. Also worked with the earlier Cascade BSTDX 9000 and CBX 500.
9.
by kitteh 6y ago
The most brutal thing I saw was when someone compromised a customer ISDN router (the small Ascend boxes with the curses UI) and changed the creds to login to their ISP and disconnected it and forced it to redial repeatedly. The local telco
10.
by kitteh 6y ago
Tragically there was nothing simple about ISDN. A customer would have to know their switch type at the CO and there were a number of other things that could break it. At least with a T1/DS1 you only had to worry about SF/ESF, B8ZS
11.
by kitteh 6y ago
Yep it's the main spot in nashville for voice stuff. Has local access switches (dms 100), tandem, and LD goes out of there. At&t I think also has their long haul optical transport and some core ip backbone stuff there.
12.
by kitteh 6y ago
Back when I worked in a CO the engineering goal was to be able to run the building load on gen for at least 24 hours straight before getting fuel trucks. We had weekly gen tests to validate things were working as expected. It could be that
13.
by kitteh 6y ago
Dark docs is kind of watered down history. The previous mentioned book is great. Back in the 90s Discovery actually had documentaries that covered this from the people actually involved (including the person who proposed the operation) - no
14.
by kitteh 6y ago
Cables don't equal good connectivity. Interconnection facilities are the best places to be (or rather what you want to be connected to in order to establish as many adjacencies). 111 8th in NYC. 165 Halsey in Newark. 350 easy cermak in
15.
by kitteh 6y ago
Yes. Which raises the question why don't we have something to detect/mitigate this.
16.
by kitteh 6y ago
Yes. Phone phreaking in the 90s involved a ton of learning the lingo and the ins and outs of the phone company. It was even weirder to go work there later on and found how much that paid off and earned trust with a lot of the older folks th
17.
by kitteh 6y ago
Or ddosing a site offline. Remember that only a handful of companies today have the infrastructure to handle large attacks.
18.
by kitteh 6y ago
They could use their own timing source, though? I recall back in the day being able to pull timing source off a circuit.
19.
by kitteh 6y ago
Chargen isn't that popular now. The big things these days are: spoofers who generate a ton of syns to legit destinations which result in a lot of syn+ack to the victim. Bcp38 would help here. Botnets generating a ton of UDP to destinat
20.
by kitteh 6y ago
Yes. As someone who has to support network infrastructure and had many network issues (at all levels) bubble up to them since the start of covid/wfh - broadband networks are being stressed during work hours. You can run your own monito
21.
by kitteh 6y ago
I remember as a pc tech (before they did that geek squad stuff) having to validate computer returns. The amount of stuff people would pull daily always amazed me. Putting bricks in a computer box, an old video card for a matrix vga card, th
22.
by kitteh 6y ago
Could you drop some IP prefixes you believe are hijacked and timestamps? I can probably help out and bring this to folks who can take action. (I have to deal with hijacks frequently and part of our investigation is beating on folks who have
23.
by kitteh 6y ago
Yes. Many of these shops follow the same design patterns. Ports for hosts at L2 that they bill on that are part of a big Vlan/L3/SVI interface that has tons of customers. I've seen these configs where folks have hundreds of &
24.
by kitteh 6y ago
It'd be nice if we could address some things like BCP38 (anti spoofing), RPKI, route filtering and folks who knowingly support infrastructure that's used for outbound ddos (c2s and regular hosts), spam and malware phishing. Plent
25.
by kitteh 6y ago
They're already doing massive flow sampling at the GFW complexes today. They can police down to individual flows if they want to. They scale wide by distributing out traffic based upon src or dst IP.
26.
by kitteh 6y ago
Friend of mine in Toronto told me a story how a CRTC (canadian telcom/radio regulator aka like the US FCC) tech was walking around his apt bldg with a spectrum analyzer. Pin pointed an apartment down the hall and was able to make conta
27.
by kitteh 6y ago
There's a few around the world that have been essentially abandoned. High cycle time aircraft, engines stripped, avionics gone and useful parts taken. There is a whole industry around salvaging old jet aircraft for parts, movie sets, f
28.
by kitteh 6y ago
Back in the day we had GOCO (govt owned company operated) facilities to handle things like ammunition manufacture (they still exist). But this administration has made it clear they won't do that for PPE.
29.
by kitteh 6y ago
It was popular for booting people off IRC, but there were other exploits around the same era that did the same such as land and teardrop. It wasn't super notable. What was more horrific was the amount of windows machines that had tcp p
30.
by kitteh 6y ago
I can relate and drove on the highways that mostly didn't have lights. Connecticut/NY to Montreal almost every weekend for a year (except in inclement weather), usually late at night. Lots of great radio programs. This American Li

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