[Solved] Can't ping windows VM

Adithya

New Member
Feb 18, 2020
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Hi,
I have the following scenario:
I have a node where I have setup a windows VM:

My windows VM is able to ping the node and my local PC on the same network.
My node is able to ping my local PC but unable to ping the windows VM
My local PC is able to ping my node but unable to ping the windows VM

I have disabled firewall at all levels.
I need some help to understand why this is happening
 

Adithya

New Member
Feb 18, 2020
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Yes, I have disabled it at all levels (data centre, node and the VM)
In the VM, I disabled it in the firewall section and the network section
 

spirit

Famous Member
Apr 2, 2010
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www.odiso.com
because this really sound like the default windows firewall blocking icmp by default.

you can try to tcpdump on the tap interface directly from proxmox host

#tcpdump -i tap<vmid>i0 icmp

to see if it's blocked by windows or not.
 

Adithya

New Member
Feb 18, 2020
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1
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Hi, I ran tcpdump and I got this output on the node, when I tried to ping my VM:

Code:
19:03:22.235459 IP inrd-adik.XX.XXXX.XXXXXXX.com > desktop-6qieueb.XX.XXXX.XXXXXXX.com: ICMP echo request, id 1, seq 168, length 40
But the request times out on my local PC.
I have also allowed remote access on my VM
 

spirit

Famous Member
Apr 2, 2010
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www.odiso.com
is desktop-6qieueb.XX.XXXX.XXXXXXX.com your vm ?

if yes, that mean than icmp request is going to windows, and windows dont reply. (So it's a problem in windows, maybe filtering icmp request for in, or icmp reply for out)
 

Adithya

New Member
Feb 18, 2020
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0
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Yes, that is my VM.
I had earlier disabled firewall on VM through proxmox. I thought this would be enough, but it didn't work.

It worked only after I added inbound rules to allow ICMPv4 and ICMPv6 messages on my VM.
Thanks for the help :)
 

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