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colmmacc's profile
Colm MacCárthaigh
Colm MacCárthaigh
Colm MacCárthaigh
@colmmacc

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Colm MacCárthaigh

@colmmacc

AWS, Apache, Crypto, Irish Music, Haiku, Photography

Seattle
notesfromthesound.com
Joined April 2008

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    1. Colm MacCárthaigh‏ @colmmacc 24 Jan 2019
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      And now, because we're tracking state, we can actually insert a dedicated secure platform that terminates (and also reinitiates) TLS/SSL, and *still* keep the Network Load Balancer transparent and easy to use. This is doubly insane magic.

      4 replies 2 retweets 13 likes
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    2. Colm MacCárthaigh‏ @colmmacc 24 Jan 2019
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      Now with this feature, you can make your front-end world-facing TLS/SSL security our mission, rather than yours. Here are just some of things we do that can be hard to replicate:

      1 reply 0 retweets 4 likes
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    3. Colm MacCárthaigh‏ @colmmacc 24 Jan 2019
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      1. NLB uses our @AWSOpen Open Source implementation of TLS/SSL - Amazon s2n. https://github.com/awslabs/s2n  is small and fast and we pour over it for security issues and formally verify more and more of it every year.

      1 reply 7 retweets 17 likes
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    4. Colm MacCárthaigh‏ @colmmacc 24 Jan 2019
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      2. If/when there are any issues; we take care of the updates and handling, you don't need to drop everything to suddenly upgrade.

      1 reply 1 retweet 4 likes
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    5. Colm MacCárthaigh‏ @colmmacc 24 Jan 2019
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      3. We run our TLS/SSL termination on a bastion-like environment. We minimize the surface area, we minimize the number of people who have any kind of access, including access to commit code running on the platform.

      2 replies 1 retweet 4 likes
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    6. Colm MacCárthaigh‏ @colmmacc 24 Jan 2019
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      4. Our team who run it are TLS/SSL experts. Folks who've contributed to the RFC. Folks who are clued in on the latest protocol attacks. They are also scale and operational experts. The team started as the front-end team for Amazon S3, and now manage nearly every AWS front end.

      1 reply 2 retweets 15 likes
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    7. Colm MacCárthaigh‏ @colmmacc 24 Jan 2019
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      5. NLB's TLS support integrates with Amazon Certificate Manager; we can automatically rotate, replace, and revoke certificates. No more outages because of an expired certificate!

      1 reply 4 retweets 18 likes
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    8. Colm MacCárthaigh‏ @colmmacc 24 Jan 2019
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      6. We have access logs, and can tell you about your TLS clients! We log things like the cipher suite and protocol version used, which makes it easy to audit if it's safe to disable an old algorithm.

      1 reply 1 retweet 11 likes
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    9. Colm MacCárthaigh‏ @colmmacc 24 Jan 2019
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      7. NLB's TLS support can still use TLS to your targets, so you still get TLS traffic all the way to your target. This might seem strange, if you're going to run TLS on your own end anyway, what's the point?

      1 reply 0 retweets 6 likes
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    10. Colm MacCárthaigh‏ @colmmacc 24 Jan 2019
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      ... well, NLB runs on Amazon VPC. On VPC we encapsulate, authenticate and secure traffic at the packet level. Packets can't be spoofed or MITMd on VPC. Traffic only goes where you send it. That makes it possible to use a self-signed, or even expired, certificate on your end.

      1 reply 4 retweets 13 likes
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      Colm MacCárthaigh‏ @colmmacc 24 Jan 2019
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      In TLS/SSL, certificates are just about authenticating the server or the client, but since Amazon VPC does that at the packet level, you can offload the problems that comes with certificate management to us.

      11:19 AM - 24 Jan 2019
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      2 replies 0 retweets 7 likes
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        2. Colm MacCárthaigh‏ @colmmacc 24 Jan 2019
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          8. You can run plaintext too. I wouldn't recommend it, but you can also use NLB TLS as a total TLS/SSL off-loader; you can run plain TCP to your targets and NLB will translate between TLS to/from your clients and TCP to/from you. We *still* preserve the source IP, even then.

          2 replies 0 retweets 6 likes
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        3. Colm MacCárthaigh‏ @colmmacc 24 Jan 2019
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          9. If you've been using our Classic Load Balancer as a L4 load balancer with support for TLS, you can now move to NLB!

          2 replies 8 retweets 16 likes
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        4. Colm MacCárthaigh‏ @colmmacc 24 Jan 2019
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          That's it from me! You can start using it right now, I've had a test NLB going for a few weeks myself. Super super delighted to get this out there. AMA and let me know if you have any suggestions or questions! EOF.

          11 replies 0 retweets 22 likes
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        5. End of conversation
        1. Nicolas Grilly‏ @ngrilly 25 Jan 2019
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          Replying to @colmmacc

          What's the point of using TLS between NLB and the backend then? To counter an attacker spying the traffic inside and between AWS datacenters? Isn't traffic between datacenters encrypted?

          0 replies 0 retweets 0 likes
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