When you install solusvm on master or salve Node
These ports are should be open Other wise you face issues
For Master Node
With out SSL on-secured HTTP access for web interface - 5353, 80
With SSL
secured HTTPS access for web interface with SSL - 5656, 443
SSH (default) - 22
noVNC web socket (default) - 7706
DNS - 53
Slave Server
API connection from master - 6767
SSH (default) - 22
VNC ports (default) - 5901-5999
DNS Server
SSL 6767
SSH (default) - 22
DNS - 53
We hope This article is helpful to you and solve your issues