Since vSphere 6.7 only TLSv1.2 is enabled by default. In addition there is a tool for managing the TLS protocols:
But since you didn't specify your version, other vSphere versions may look different.
And whether changing the SSL/TLS settings will have an impact depends mainly on third-party software. vSphere itself (vCenter and ESXi Hosts) will work fine with higher TLS versions from 6.5 onwards. However, if you are using other software (backup software, monitoring tools or other VMware products in older versions), they may no longer work.
Or if you use the vSphere (Web) client with an older browser that does not support TLS v1.2, you won't be able to connect to the vCenter server.
Thanks. I mentioned we're running everything at 6.5 (vCenter is U2g, hosts are EP14). Everything should work (fingers crossed) with just TLS 1.2, and wa able to get the Ultility which I'll run. But is there any reason why a scan would show SSLv1 still in use (they want us to disable SSLv1 - there was no mention of TLS versions but if SSLv1 pops up in a scan I would assume older SSL and TLS versions might also need t be disabled)? Do you know what a Tame server is and what is to be configured?
Oh, I didn't see that you mentioned the version. Sorry for that.
And I'm pretty sure SSLv1 is not used anymore in vSphere 6.5. You should therefore contact your security team and ask them which service or port uses SSLv1 and ask if this could be a false positive.
And maybe this resource will also help you or your security team: VMware Knowledge Base
Do you know what a Tame server is and what is to be configured?
No. Here you should also ask your security team what they mean and what you should do.