jlgaddis

9 ms·

31.
by jlgaddis 5y ago
Here's the first message (of tha particular thread) from Ron, with all of the background info: https://mailman.nanog.org/pipermail/nanog/2019-September/102...
32.
by jlgaddis 5y ago
And, since about the mid-90s or so, "portmaster" was also the name of a series of hardware "appliances" (as we'd probably call them today) that were very widely used in the early days of the Internet [0]. -- [0]: h
33.
by jlgaddis 5y ago
For several years now, I've been an advocate for either "uninstalling" the default route on (most) hosts and/or switching to a default deny policy for outbound traffic, just like we all did for inbound traffic a long t
34.
by jlgaddis 5y ago
> ... averaging ~30TB/min of egress traffic ... That's 4 Tbps after converting to units that everyone else in the world uses for network traffic (assuming the calculator installed atop my neck is operating bug-free this soon
35.
by jlgaddis 5y ago
I've rode ~1000 miles (~1600 km) in a day before but I had a 1690 cc V-twin engine under my ass every time. Those trips were exhausting enough, I can't imagine doing half of that distance on a two-wheeler that I had to pedal!
36.
by jlgaddis 5y ago
> ... there is also a negative impact to the reference implementation of ntpd, which uses 127.x.y.0 to communicate with drivers ... 127.127.x.y, for what it's worth (cf. any of the individual "Type n " reference clock d
37.
by jlgaddis 5y ago
You must not be aware that CTRL-U is the secret h4x0r backdoor key for "unencrypt".
38.
by jlgaddis 5y ago
I've got an old iPad that's still running iOS 10.0.1 (yes, I know). It's used very infrequently and mostly just for reading (PDF documentation, primarily). Coincidentally, I happened to be in the middle of looking something u
39.
by jlgaddis 5y ago
* Once you think about this more though, you realise that it does make sense and that it just doesn't seem logical upon first thought. In order to make this change and it actually have an effect on the client, you need to have access t
40.
by jlgaddis 5y ago
IT'S NOT THE NETWORK! Sincerely, A Network Engineer
41.
by jlgaddis 5y ago
> ... the unauthenticated pages served from cache were still very fast. Wouldn't those have been coming from Cloudflare, though?
42.
by jlgaddis 5y ago
> Is there any way to prevent it? Mounting /proc with " hidepid=2 " should prevent it from seeing processes owned by other users, although it would still be able to see your processes. Alternatively, it shouldn't be t
43.
by jlgaddis 5y ago
Well, dammit. Of course they come out with this now , after I've got a few antennas up on the roof, half a dozen GPS-disciplined OCXOs providing 10 MHz and PPS signals throughout the house, which are being fed into SolarFlare PTP NICs
44.
by jlgaddis 5y ago
Mostly because 1) your phone is getting time from the tower anyways (they have to be closely sync'd) and 2) GPS doesn't always work very well -- especially indoors.
45.
by jlgaddis 5y ago
Probably because an ESP8266 isn't anywhere close enough to "real-time" to be of any benefit. Why bother getting a nanosecond-level accurate time signal if you're going to feed it to an ESP8266 to distribute over Wi-Fi
46.
by jlgaddis 5y ago
Build or buy a few GPSDOs, put a couple of antennas outside (up and in the clear), distribute the 1PPS to a few of your servers, put NICs that support hardware timestamping in them, and make them your time servers (they'll run your NTP
47.
by jlgaddis 5y ago
I don't have a specific URL for you (other than for the authoritative source, the DNS RFCs) but a good example would be how clients in an Active Directory environment find a Domain Controller to log on to -- I'm sure there's
48.
by jlgaddis 5y ago
I've still got a set of 3.5" floppies.
49.
by jlgaddis 5y ago
Yes, but... if you're in Russia, my understanding is that you really don't have too much to worry about, so long as you only go after targets outside of Russia.
50.
by jlgaddis 5y ago
> Find a way to use clonezilla to take an image of the whole (fat16?! fat32?) filesystem, and also of the disk as a whole including partitions. And perhaps invest in a few CompactFlash <-> IDE adapters, too.
51.
by jlgaddis 5y ago
About a week ago I wrote in a comment here that "Some of us (masochists) actually like RS-232!". It's nice to be reminded that I'm not the only one! My primary laptop is an (8-year-old!) ThinkPad W530 that I can't
52.
by jlgaddis 5y ago
Did you know that cable modems -- whether you rent 'em from Comcast or buy 'em yourself -- download their configuration files from the ISP when they boot up? > ... you probably aren't part of the Xfinity hotspot system.
53.
by jlgaddis 5y ago
> nobody misses -12V Some of us (masochists) actually like RS-232!
54.
by jlgaddis 5y ago
IIRC, Corsair's AXi and HXi series power supplies -- basically, the really expensive ones! -- support PMBus (I2C). The entry-level and lower-priced ones don't, AFAIK.
55.
by jlgaddis 5y ago
I just recently made a nice little 3.3V, 5V, and 12V power supply for my electronics bench using the power supply from an old server. Saved me from buying one and kept the power supply from ending up getting throwed out. "Win-win&quo
56.
by jlgaddis 5y ago
Be careful, that's (probably) just on the DC side...
57.
by jlgaddis 5y ago
> At the time, CD-ROMs spun at slower speeds with data transfer rates of below 1 megabyte, which made the CD-ROM less useful than it might have been in later iterations. It's all relative, I suppose. Around the same time I had Deb
58.
by jlgaddis 5y ago
> The router is set with ... a global unicast IPv6 address (GUA) prefix 2001:db8:abc:123::/64, which the ISP designates to us (of course, that’s not the real prefix, but I will use this one in all examples below). On a side note,
59.
by jlgaddis 5y ago
Your mind is gonna be blown when you discover the Internet Archive's Wayback Machine! https://web.archive.org/web/20080310221514/http://www.masnic...
60.
by jlgaddis 5y ago
I use them fairly often, but I'm a network engineer. I odo ccasionally use the (already-mentioned) $ ping 1.1 $ 10.1 variants, but I use "these obscure formats" more frequently when dealing with 4-byte ASNs (cf. [0]

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