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So in the case of multiple users behind a NAT, the cert for 96.7.128.175 would identify whichever party has control over the 443 port on that address?
by xg15 1y ago
So in the case of multiple users behind a NAT, the cert for 96.7.128.175 would identify whichever party has control over the 443 port on that address?
- schoen 1y agoYes (if the TLS-ALPN-01 challenge method was used). The CA/B Forum Baseline Requirements currently permit proof of control using any of four specified ports > Authorized Ports: One of the following ports: 80 (http), 443 (https), 25 (smtp), 22 (ssh). Let's Encrypt uses only port 80 and 443. This is the same for certificates for domain names and for IP addresses.