Client VPN can ping only some computers

[ITJosh]

My network is consisted of multiple VLANS:

management 10 (192.168.10.0/24)

wired clients 100 (192.168.100.0/23)

wireless clients 200 (192.168.200.0/23)

and the VPN subnet (192.168.30.0/25)

I am able to connect to the VPN successfully, and I am able to ping all the default gateways for each VLAN. However, I do not see any pattern with what I can ping and what I cannot. I can ping a few clients in VLAN 100, and a few in 200. The few that I can ping are laptops, desktops, mobile phones, APs, etc. But I also cannot ping a few desktops, laptops (of the same model and OS).

For example, right now I am trying to remote desktop from a VPN client into a wired windows desktop on VLAN 100. I allowed remote desktop connections on the windows machine. I can remote into it from another windows machine on the same VLAN, but not from the VPN client.

I just barely implemented this network less than a week ago, so I have not added any firewall rules. All connections between SSIDs are allowed. Is there something else I can check for?

[PhilipDAth]

My guess - Windows firewall on the machine you are trying to access.  If you turn Windows firewall off on the destination machine does it work?

[ITJosh]

Yes, I am able to connect to it without the firewall. Is there a certain rule that I have to add to the host's firewall?

[PhilipDAth · Accepted solution]

Could you add a rule to allow inbound traffic from the subnet allocated for client VPN.

[ITJosh]

That worked! Thank you so much for your help!

[shreyakith]

can you run a packet sniffer such as Wireshark while having a continuous ping -t to your file server

you can check the issue

also do you have VLANs?   incorrect VLAN or IP address in the file server can cause this issue.