Proxmox can't ping host but the host can ping proxmox

[Alpha]

Hello ! Since im new in proxmox, my senior told me to create simple communication server with proxmox.
I Have 1 PC for server and 1 laptop for controlling and creating VM. Since i already created 2 vm with debian OS, i have 4 IPs now

Proxmox : 192.168.1.135
Debian 1 : 192.168.1.180
Debian 2 : 192.168.1.125
Host (Laptop) : 192.168.1.174

The problem is, i can do ping from my host (windows laptop) to 3 of them, but i cant do ping from 3 of them to my host laptop. What mistakes that i did? Or something that i need to do to make it fix? Please help me.

Thank you!
This one is preview from 1 of my guest can't do ping to host.

 

[Alpha]

Oh the problem is my public firewall as usual. Well its solved.

 

[faryuda]

hello, im experiencing the same problem. can you please elaborate what exactly is the issue?