Opening ports for the UVexplorer discovery is an alternative to running a UVx agent on that network - we do not recommend this but in some situations it may be necessary.
The discovery process uses a number of TCP and UDP ports for device detection and discovery:
Main ports:
PING (ICMP - no ports used)
SNMP (UDP -161)
SSH (TCP - 22)
TELNET (TCP - 23)
WMI/Powershell - TCP port 135
HTTP and VMware use the ports that you have configured on those platforms
If you have access to devices outside the firewall, we recommend installing a remote UVx agent to discover that side of the network. The agent will post the results back to the internal server and you will not need to open these ports.