On a clean setup with Microtik RB750Gr3 router, clients can't ping eachother

RouterOS General
1

2 clients and RB750Gr3 router configured to the same subnet (10.140.1.0/24), all default config (i.e only gateway IP and DHCP range configured, default config adds all 1-4 ports to bridge)

Both clients can ping the gateway (10.140.1.1)
LTE1 (3G modem) works for both
Neither client can ping eachother
Neither client can be pinged from router using Tools → Ping
Both clients can be pinged from router using Tools → Ping (ARP Ping)
Issue is present whether both clients are connected directly to router network ports or connected to an unmanaged switch and switch is connected to the router

I have already tried updating RouterOS to 7.6 and 7.7beta but the issue persists, upgraded firmware to 7.7beta8. What else could i check?

2

If clients in the same subnet can’t ping each other when connected via an unmanaged switch it has nothing to do with the Mikrotik, most likely client firewall rules.

3

Concur, there is nothing stopping clients from pinging each other except clients devices (not the MT)

4

Yeah, this happened due to Windows changed from domain network to public network and firewall blocked ping. Had to switch to Linux clients to figure this out - topic can be closed :slight_smile: