S/MIME Revisited

This is more of a PSA than anything, but (unsurprisingly), with the lack of interest in general email encryption, apparently no one’s going to step up and offer us free email certificates anymore (why, LetsEncrypt?!).

Previous writeup:

S/MIME Email Encryption

Also, I discovered that Firefox removed keygen support, so you can’t use it anymore for certificate generation.  I missed that memo, and spent some time acquiring my domain-validated certificatewith Sectigo’s support team (being told repeatedly to use Internet Explorer, amusingly), before this detail was mentioned, and I was able to complete the process in Safari (this imports the certificate directly into Keychain, which then requires an export to send to other devices).

The formerly free COMODO (now part of Sectigo) certificates that I used to use now cost $20 per year (although the site now says $16.99, so they must have dropped it since).  Still, not bad, though irritating.  On the other hand, unlike COMODO’s free certificates, I did get actual support when things went awry, so you do seem to get what you pay for.  And, I was happy with their assistance in acquiring my domain-validated certificate earlier this year, so I’ll stick with them for now so long as they offer decent support.

Other than the company merger and the pricing structure change, and the fact that no one else on the internet appears to use S/MIME encryption, the installation at least remains the same on the various devices I use.  So, you know, encrypt away!  Except you won’t, because again, I’m the only person on the internet who appears to use S/MIME encryption.

Simon

DNS

Of all the digital glues holding the Internet together, the domain name system is probably  one of the most critical, yet also the weakest.  The current protocol as a whole is unencrypted, and if it goes down, or is interfered with, then that prevents communication to anything not a hard-coded IP address.  But even then, SSL PKI breaks down unless the certificate in question was specifically exempted.  In short, a DNS failure would break the Internet.

And it was exactly that scenario in which I found myself recently.  I, the security-minded sysadmin of the home, had long since switched my DNS provider over to what at the time I determined to be the most privacy-minded and secure: Quad9.  And I never had any issues since.  But I made an error with my configuration: I specified two Quad9 DNS IPs, rather than using a different party as fallback.  And when, for inexplicable reasons, Quad9’s DNS servers ceased to resolve my DNS queries, I found myself offline–sort of.

Certain devices bypassed DNS, notably my work laptop and the Ring cameras.  Liz’s work laptop did not, however, which is an interesting aside in that mine must have a hard-coded VPN IP and hers did not.

But back to the main story.  I had never experienced a DNS provider failure before, and it took some rather lengthy late-night testing to figure out the problem.  Ultimately, I ended up switching back to OpenDNS with a Google fallback–not my ideal configuration, but one I’m sure won’t experience any downtime.

Yet in the end, I’m left to wonder: What happened to Quad9?  The Internet community as a whole offered no information, which I’m sure would have been available anecdotally had Quad9 truly ceased to function.  Perhaps Spectrum was blocking it?  But why would they do that, only to allow me to use other DNS providers.  If forcing customers to user their own, why didn’t they block OpenDNS and Google?

I posit this query to universe.  In the meantime, know that you may have issues with a Quad9/Spectrum configuration.

–Simon

Desperate Times

I never would have predicted that Windows would have gotten so bad that my own wife would choose to abandon it, especially given her disdain for Apple.

But the OS world is not one of strict duality.  And upon my suggestion, she agreed to Ubuntu, convinced with my recommendation (in turn based upon my own recent experiences with it).

The process was essentially the same as the above linked post, so I won’t go into detail again here.  Instead, I’ll just share this picture, and again vouch for Ubuntu with yet another successful experience:

If Windows 10 has made you pine for an adult operating system, and Apple isn’t your cup of tea, then consider the latest Linux distros.  They’re far more user-friendly than they used to be.

–Simon

Ring 2

Not the “Ring 2”–I mean part deux of the Ring products saga

A year ago we got the Ring doorbell.

Thankfully, it hasn’t been instrumental in solving any crime, but it definitely brings peace of mind.  And, it’s very convenient to see who’s walking up to the door while I’m in the basement working.

But paranoia has no terminus, and I found myself eyeing Ring’s line of cameras for the back door for the same reason: I want to see if anyone’s walking up to it.  Not that anyone has, but I often leave the dog in the back to run while I work, and with reports of dog-snatchers, I wanted to keep an eye on things.  I decided upon the Stickup cam wired.

My reasoning was thus:

  • I don’t want a floodlight back there, so no-go on that model
  • I wanted wired, as I always prefer to run dedicated lines to unreliable WiFi
  • It supports PoE, which would not only allow a single cable run, but the PoE injector could then be plugged into my UPS, thus keeping the camera online in the event of a power outage

The only thing left to do then, was actually run the cable.

But the drawback of cable is that it limits placement of jacks, due to the simple matter of me not being able to squeeze into tiny places (unlike my father, I don’t have a son to task with those jobs).  I had wanted to run the cable to the attic and down the eaves and into the middle of the deck, but as I attempted to do so it became very clear that if I actually managed to drop down through the attic and into the eave space, Liz would have had to call the fire department to chop me out.

So I would have to drill through the outer wall–which was brick, so no easy feat.  But there is a pointlessly-placed back window into the garage, with a wooden frame.

The wood posed little challenge, and in short order I had a 3/8 in hole from the garage to the back yard.

From there, I ran a patch cable connecting the camera to an electrical box I installed on the garage ceiling, which housed the cable termination and ethernet jack.

From there, the cable ran into the attic and followed the path of a prior cable install for the garage hotspot, ultimately terminating in the patch panel.  Then it was through the aforementioned PoE injector, then to the switch.

Voila: my longest cable run yet.

Now for some thoughts on PoE:

I noted that after all was up and running, the switch indicated that the connection was not gigabit.  All the equipment was rated for it, including the injector, but the amber light stubbornly refused to turn green.  Concerned that one of my punchdowns was bad (as was the case in a recent project–totally not my fault), I disconnected the injector and tested the line with a laptop.  All connections were confirmed gigabit, so I researched how PoE operates.

Surprisingly, I couldn’t find any bandwidth figures for the various specs, maybe because PoE isn’t in itself a form of data transfer, but rather a means of transmitting power over a data cable.  Still, the lack of discussion on the matter was not encouraging.  I concluded that what was happening is that I had one of the specs that sacrificed two of the 8 CAT6 wires for power, thus dropping the connection speed to Fast ethernet.  Apparently, therein lies the PoE tradeoff.

But the speed seems adequate, and while live view appears somewhat grainy, the recordings are perfectly clear.

I’m still pleased to say it hasn’t recorded any crime either.  And, apart from some rabbit-chasing videos, it’s dutifully served its primary function–notifying me when there’s backyard movement I should know about.

Recommended.

–Simon

Who Shot the Serif?

Okay I admit, I didn’t make that joke up.  But I like it so I’ll “repost” it.

My recent post on cursive got me thinking about text again.  In it, I briefly mentioned the common knowledge that sans-serif fonts were supposedly easier to read on a digital medium, whereas serif fonts were better in their printed form.  Of course, the CSS class I had taken once also touted an ideal single-line character limit as the easiest to read.  I was skeptical at the time, and talked about how to override the default WordPress line limit.  Now, staring at what I consider to be a juvenile-looking default sans-serif font, I decided that needed changing too.  In short–the Internet is wrong and I have to take matters into my own hands.

And so, you might have noticed that the fonts on this site are different now.  After some trial and error, I decided upon “Freight Text”, based on nothing more than the fact that I found it the most visually pleasing.

I have no idea who develops fonts and what’s involved with the process of their standardization.  That’s a topic for another day’s adventure through the interwebs.  But I found this brief description:

“About Freight Text

Phil’s Fonts evolved from one of the most well known and respected photolettering studios in the industry – Phil’s Photo. We carry on the traditions and standards established by its founders. As the state of typography changes in the digital era, Phil’s Fonts continues its love affair with beautiful faces, making fine typography available to artists and communicators around the world.”

Apparently there’s some studio that makes these and people decide whether or not to adopt them?  Whatever

Regardless, if you don’t have the font installed, your browser will revert to its default serif font:

    {
font-family: “Freight Text”, serif;
color: #000000;
}

And that’s it, really.  I changed the CSS for a number of elements.  Sure, fonts might be a pointless argument, but in this specific instance, I’d rather choose a more sophisticated-looking variant over its overly-simplified modern counterpart.

–Simon