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My little personal website

Kai Neuwerth on August 14, 2018

Hi devs, this is my first post on dev.to and I don't know if it is the right place to share my personal website but I want to give you a little in...
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Jack Harner πŸš€

What's the point of sharing your public SSH key?

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Kai Neuwerth • Edited

That is a really good question, Jack! I added this because sometimes I don't have my key available. For example on my mobile phone. Then I either tell the one who needs it that she/he can copy it from there.

I don't see a security issue here because the private key can't be generated from the public key.

Also this key is more a temporary key as I always generate a new one for a server. This key is used as first entry key for simplicity and then I replace it with the new one I have generated.

Do you see any security issue when sharing a public key?

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Jack Harner πŸš€

I guess I was just under the impression that you would still treat both halves of the SSH key like a password. But I guess I've also never been in a place where I needed SSH access to something where I didn't have the generated keys from that machine already installed.

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Kai Neuwerth

I guess I was just under the impression that you would still treat both halves of the SSH key like a password.

To be honest it's not possible for me to keep my public key private because I have access to so many different customer's servers.
That's the reason why I create a new key pair for almost every server.

So in most cases, especially when I'm not on my computer, it's just easier for me, to tell someone that she/he can find my public key on my website and I'll replace my key with the new one later.

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Jack Harner πŸš€

Ahh.. Ya, that definitely makes sense. Thanks for sharing the insight!

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Alexey Voinov

Good point, actually. You give away your public key to some other parties anyway, and you cannot trust them. So yeah, it's a good idea :)

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Jack Harner πŸš€

I assume it's mostly a "Hey, you're giving me access to your server. Here's my public key to get access" kind of thing right? I assume there are other scenarios where you'd need to give out the public key?

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Alexey Voinov

I can't think of any. I guess even if there are, they fall into 1% of the cases.

Look what I've found: security.stackexchange.com/questio...

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tux0r

Random idea:

  • Stop loading external resources. There is no reason to not host the webfonts locally. In fact, your visitors already resolved your domain's DNS ...
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Kai Neuwerth

I removed the prerender and preconnect instructions for my own domain. That was truely not necessary.
Would you really self-host all external resources including Google Tagmanager and all Google Fonts assets? How would you keep them up-to-date?

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tux0r

How often are fonts updated anyway?

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Kai Neuwerth

Not that often, but what about Google Tagmanager?

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tux0r

Yup, I had not thought of that...

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tux0r
<link rel="dns-prefetch" href="///www.googletagmanager.com">

One / too much?

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Kai Neuwerth

Darn! You are right. Didn't see that :D thanks!

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Anwar

Did you used a bundle system for your assets? I ask because I saw your CSS assets could be improved by 12% by trimming useless styles (since you talked about optimizations, which is for me the most exciting part of a website). I checked this number using Chrome WebTools Code Coverage. I recently used NPM purify-css, which works like a charm for removing useless CSS rules. Just droping it here :)

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Kai Neuwerth

Yes, I'm using grunt and grunt-contrib-less to generate my CSS and minify it. Maybe it's not the best compression but GTmetrix tells me my CSS can only be minified one more percent.

I gave purifycss a try:

  • File size of assets/css/styles.min.css before: 7914 bytes
  • File size of assets/css/styles.min.css after: 7289 bytes

That's a good change. πŸ™‚ Thank you for the hint!

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Ben Sinclair

Bug: if you open either "imprint" or "privacy policy" those links still stay visible but aren't clickable until you close the modal.

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Kai Neuwerth

Fixed. Thanks for the hint, Ben!