Renewing Expired Certificates

Hello. Recently, a bunch of my locally-generated certificates have expired and I am having trouble finding a way to renew them. I am using the firewall's local CA to make certificates for WAF rules...
Update certificates via API

I have my certificates in a folder and I'm looking for a script that will update them when there is a change so that waf will continue working without manual intervention. I have very little experience...
Certificate for SSL VPN and Captive portal

I received a message from SSL VPN and Captive portal about a certificate issue. I created a locally-signed certificate and installed it on the client’s machine, but the error related to the certificate...
XG MTA to Office 365 Connector “Empty Certificate”

I’m trying to move Office 365 connector authentication from IP-address to certificate. A Let’s Encrypt certificate has been created (on SFOS 21) and added to the SMTP TLS configuration under the Email...
Unable to access captive portal using Lets Encrypt certificate

Problem: When I go to the portals from my LAN zone I can get into all of them except the captive portal. Ports 4443 (user) , 4444 (admin) work. Port 8090 gives me an error in the browser: Firefox v133...