Re:WiFi without internet on a Southwest flight
by toast0 on Thursday September 28, 2023 @01:50PM
(#37693117)
Yeah, at WA we didn't have too much of a problem with trust store issues; although we did do extensive testing when we switched CAs. We did have to deal with the end of SHA1 certs though, I think we were able to get all of our clients to use sha2, but some of the platform browsers couldn't; and then we had to fiddle with our TLS server to send sha2 certs to some clients and sha1 certs to others.
Of course, there's not really very useful client identification in the TLS Hello, so you have to kind of guess who needs what. If we had to use different CAs for different clients, it would have gotten a lot harder, because it's not like we could rely on clients filling out SNI either. So then you need to get more ips for each service. I do recall needing to do that a little, but we only needed a single 'legacy' group that was useful for everything that couldn't manage the modern certs.
Of course, there's not really very useful client identification in the TLS Hello, so you have to kind of guess who needs what. If we had to use different CAs for different clients, it would have gotten a lot harder, because it's not like we could rely on clients filling out SNI either. So then you need to get more ips for each service. I do recall needing to do that a little, but we only needed a single 'legacy' group that was useful for everything that couldn't manage the modern certs.