VMWare IO Analyzer vs. ESX Host Firewall

Hi all!

does anyone know if we need special ESX host FireWall settings for run listening sessions?

If we start a listening session w/o workload each ESXi host (Cluster Members ESX 5.5) lose his managment communication.

It seems that the firewall needs too long for learn new firewall rules.

Local GUI output during the whole listening session:

Update SSL thumbprint     #completed

Blockfirewall ports             #completed

open firewall ports            #completed

.

ASO

> VCenter message "ESX-host.xxx.yy" (not responding)

Thanks

Franz