Domino 12 – SSL Performance  

By Martijn de Jong | 3/22/21 2:54 AM | Infrastructure - Notes / Domino | Added by Roberto Boccadoro

A few weeks ago I wrote about the new Certificate Manager in Domino 12, which enabled Domino 12 to request and automatically update LetsEncrypt certificates and implemented a better way of Server Name Indication (previously introduced in Domino 11.0.1), so you can use different SSL certificates for different websites without needing multiple IP addresses. The Certificate Manager also allows you to use the most recent (ECDSA) ciphers. The lack of this functionality in previous versions of Domino was an important reason why, in many Domino installations, an Nginx, Apache or IHS server is placed in front of the Domino HTTP task as a reverse proxy. There was however another reason: Domino used a lot of cpu power for and was rather slow to decrypt and encrypt SSL traffic. Letting Nginx/Apache/IHS offload the SSL de-/encryption task, reduced total load on the server and sped up performance. I therefore wondered if HCL also managed to solve this problem.