I am observing a strange behavior on a raspberry pi zero w.
raspberry pi (A) connects in a IOT WIFI network (192.168.88.x/24).
My client computer Windows 10 (B) is in a wired network (192.168.10.x/24)
the networks are connected via a PFSense firewall.
Firewall-Rules B -> A : TCP 22, TCP 7575, ICMP
Directly after a fresh installation I can connect from the client (A) to the pi (B) via ssh and start a PING from A to B at the same time. The connection is stable, without failures. (tested up to 120 minutes)
i then start vhusb on (B) and connect on (A) the client. i can use a connected USB stick.
But from now on the connection breaks exactly every 20 minutes. also the ssh connection / ping are interrupted. after about 10 seconds the connection is re-established.
in the logfile of vhusb it says "timeout". No other logs.
i realize that it's probably not a problem with vhusb, but since the connection is stable without vhusb and i just have no idea anymore, i'm grateful for any hint.