this post was submitted on 09 Jul 2023
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22
PFSense: Can't ping physical devices on network, but can ping virutal machines? (lemmy.world)
submitted 1 year ago* (last edited 1 year ago) by theRealBassist to c/selfhosted
7 comments fedilink hide all child comments
 

So, I am running ProxMox with PFSense virtualized on it, and I am having some issues with SSH and Ping access between my physical machines and the rest of the network. The two computers are running into an unmanaged switch before then connecting to the NIC port that is set as the LAN interface.

As the diagram attached hopefully helps demonstrate. The only problems are running between the two physical devices, and from PFSense to the two physical devices. The physical devices can connect to the virtual devices, and they can connect to PFSense just fine via SSH and can ping PFSense, but PFSense can not ping back, and PFSense can not SSH into the physical devices.

This whole mess is utterly confusing to me, to be honest. I still am very much a novice when it comes to PFSense as I only swapped to it about a month ago, but hopefully someone here will be able to help!

Please let me know if there is any more information I can provide. I am sure that this post is a bit confusing, but hopefully I can clarify in the comments!

Edit: Thanks to Starfer I fixed the issue! I errantly left Windows Defender on!

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[–] HybridSarcasm 8 points 1 year ago* (last edited 1 year ago) (1 children)

pfSense comes with a fairly closed default firewall. You’ve done a decent job of describing the physical configuration of the network. What is the logical configuration? What VLAN(s) have you set up? In the firewall page, what tabs/headings are there? At minimum, you should see “Floating”, “WAN”, and “LAN”.

Also, please include the networking config for Proxmox and the pfSense VM. You can grab those details from the Proxmox GUI.

[–] theRealBassist 2 points 1 year ago

Thank you so much for the response! However, it as actually much much simpler. I skipped a step in my procedures after resetting my computer, apparently, and forgot to turn off Windows Defender!

[–] BobaFett26 5 points 1 year ago (1 children)

Are they Windows PCs? If so, Windows firewall blocks pings by default.

[–] theRealBassist 7 points 1 year ago (1 children)

So I was in the middle of typing out "I always turn off Windows Defender for this exact reason!", but I thought better of it and checked.... turns out when I reset my computer last I skipped a step in my procedures lol

Thank you for pointing out the obvious! It is almost always helpful!

[–] BobaFett26 1 points 1 year ago

No problem, happy to help! Figured this might be the case, since I run into this situation a lot at work.

[–] hungover_pilot 3 points 1 year ago (1 children)

Have you checked that your physical devices aernt blocking incoming ping requests? Like windows firewall?

[–] theRealBassist 2 points 1 year ago

You were exactly right as well! It was Windows Defender that was causing the issue!

Thank you so much!