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What ports are used by SolusVM

SolusVM Master node:

Port number Purpose
5353, 5656 Those ports are used for API (e.g. WHMCS or the Slave nodes) and for Admin access. This port should be opened for Slave nodes, any 3rd party application like WHMCS and for all admins.
443 This port is used for client access AND admin access. It should be opened for all the internet.
5021 This port is used for HTML 5 console in case of OpenVZ. This port should be opened for all the internet.
7706* This port is used for noVNC console in case of KVM/Xen. This port should be opened for all the internet.
80 This port is used for installing Let's Encrypt per https://support.solusvm.com/hc/en-us/articles/360019514351 

* This port might be changed via SolusVM, see noVNC configuration

SolusVM Slave node:

Port number Purpose
6767 This port is used for communication with Master node. This port should be opened for Master node IP.
22* SSH port is used for HTML 5 console in case of OpenVZ. It should be opened on the slave nodes for Master node IP.
5901 - 5999** The ports 5901 and next ports are used for VNC, it should be opened for all the internet.

* Any SSH port can be used, not exactly port 22.
** Ports can go higher, like 6001 etc in case node has more then 99 VPS.