Certificate verification failed on vms

[djaks]

Hi everyone,
I've just installed proxmox ve 5.4-13 on vps with two vms behind. One regular and a Firewall. both vm have netwotrk connectivity (ping test ok). But .. when I'm trying to make an update (gui and cli for Firewall) I always have an ssl error saying "certificate verification failed" and ssl routines:ssl13_get_server_certificate" pointing to crypto directory.
I checked ntp configuration, dns resolution, repository configuration ... but always get the same error on both vm. I tried two Firewall (PFSense and OPNsense, alpine linux os and CentOS), same issue. I also chnaged mirror and update settings for OPNsense.
Is anyone encountered this issue with proxmox ?

Thank you very much in advance

 

[oguz]

hi,

what error do you get exactly? maybe it has something to do with your datacenter network? check if you can curl a https website from your proxmox host

 

[djaks]

hi, thank for the reply.
curl on https website is successfull, connectivity on proxmox host is ok. It might be a wrong parameter on proxmox host but i can't find where (fw seems to be ok, nat rules too, vms proxmox fw are opened for tests and there is no IPTABLES rules).