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Tune TLS settings about ztunnel HOT 11 OPEN

howardjohn avatar howardjohn commented on July 18, 2024
Tune TLS settings

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Comments (11)

hzxuzhonghu avatar hzxuzhonghu commented on July 18, 2024 1

in some older kernel , tls 1.3 can not be supported, why not like envoy make min version tls 1.2

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stevenctl avatar stevenctl commented on July 18, 2024

Restrict to 1.3

Use a strict cipher set

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EItanya avatar EItanya commented on July 18, 2024

Should this be configurable or static?

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howardjohn avatar howardjohn commented on July 18, 2024

Why is the kernel involved? TLS is done is user space...?

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hzxuzhonghu avatar hzxuzhonghu commented on July 18, 2024

To be accurate it should be the lib that an os installed

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howardjohn avatar howardjohn commented on July 18, 2024

We statically link the SSL library (like Envoy and Go)

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hzxuzhonghu avatar hzxuzhonghu commented on July 18, 2024

IC, that make sense

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ymesika avatar ymesika commented on July 18, 2024

Is this task for tuning the HBONE connection TLS settings?
I'm asking because currently min/max version is already 1.3: https://github.com/istio/ztunnel/blob/master/src/tls/boring.rs#L172

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howardjohn avatar howardjohn commented on July 18, 2024

Yes, its more than just version. The SSL libraries are probably the most unfriendly APIs ever designed. For every option, there are 3 ways to set it, and there are 100s of options. We need to make sure we pick the ones that are most secure and performant.

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SkyfireFrancisZ avatar SkyfireFrancisZ commented on July 18, 2024

@howardjohn has this been implemented already? If not, is this required for zTunnel reaching Alpha in OSS?

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howardjohn avatar howardjohn commented on July 18, 2024

IMO it should be a blocker for someone to give it a pass over to make sure we are using secure settings. Shouldn't be too much effort

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