Connection is terminated by the remote end with a reset packet..

[tryllz]

Hi,

I'm trying to troubleshoot this issue since a few days now and cannot seem to find the issue.

I have a lab environment in VMware Workstation with OPNsense firewall VM, Windows as a DNS Server VM, vCenter VM, and ESXi VM hosts added to vCenter. The vCenter and ESXi are in the same subnet, Windows Server is in a different subnet.

I have been trying to add vmnics to DVSwitch but keep getting Operation Timed Out error. Upon digging further I found the following error

A general system error occurred: Connection reset by peer: The connection is terminated by the remote end with a reset packet. Usually, this is a sign of a network problem, timeout, or service overload

which I read about on VMware [ https://kb.vmware.com/s/article/76259 ] says to be related to firewall. I can't seem to find what the issue is in firewall, all ports, protocols are open and allowing all traffic.

Any thoughts.

[tryllz]

I have used Fortigate before and had not faced this issue, so I'm wondering if this is related to OPNsense, or it has to do with some misconfiguration on my part..