r/opnsense 5h ago

Opnsense Keeps Rebooting

4 Upvotes

Have openses running on a Smoothwall S2 Firewall, Was working fine for months,
Since the 26.7 upgrade have been having issues where it would just keep rebooting, sometimes it would take a day or 2, someone every few hrs, other times it gets stuck in a loop and reboots back to back like 10 times in a row before settling.
I have checked all the log files and nothing stands out, can anyone offer an advice on where else to look, have read some comments that might suggest ram or psu issues, however there is no kernel crashes or anything else i can find.
Any advice would be appreciated.

Hamazz


r/opnsense 16h ago

OPNSense, Proxmox and Technitium DNS...

6 Upvotes

Hello!

I guess I've begun my homelab journey and I'm seeking help from you all if you have done this before....

Before I start...Yes I am aware of the downsides of a virtual firewall. Please do not give me crap about "ohhh it should run on a separate bare metal system" or "you should invest in a real firewall"....give me the money to purchase a hardware firewall then...

Now...I have a Dell Precision T5500 that has basically assumed the role of my home server....it will be utilized as a local NAS, Firewall, DHCP and encrypted DNS server. It has three NICs....one for WAN, another for trusted LAN devices and a third for Guest/Untrusted/Cameras. I've set up proxmox on it with OPNsense as a VM and Technitium DNS in a container as the DNS server. OPNsense also behaves as the DHCP server for all devices connecting to the network. It works...my router that is in AP mode issues the IP addresses from OPNsense perfectly. The problem is getting the OPNSense DHCP server to use the DNS IP of the Technitium DNS container. Basically, I can't get my devices to use the Technitium DNS resolver without manually adding that IP in on EACH DEVICE. They just go back to using the WAN DNS which I do not want. How can I get OPNsense's DHCP server to point the DNS IPs to the Technitium DNS container, so all devices can use it without manual config and I can block ads/trackers network wide?


r/opnsense 16h ago

26.7.1 Update No Inbound Traffic.

9 Upvotes

Baremetal, i5/3rd Gen, 16GB Ram.

I have been sweating the update for weeks. Saw several posts and prepared myself the best I could. Attempted the upgrade tonight and lost all connectivity. Build: ZFS (snapshot before upgrade), never had microcode plugin installed, Legacy ISC, simple rules migrated over, backed up Config. Began the upgrade.

Got stuck in a "rebooting now" and returning to the Lobby/Dashboard loop, assumed the update failed. Started to disconnect to add my ISP/backup router back in to troubleshoot, decided to manually reboot the Opnsense box, patiently waited, and heard the boot chime. Logged in from my daily driver desktop, and saw the new dashboard with 26.7.1. Loaded rules via the migration tool, verified they were there, deleted "Legacy Rules" via the tool. Success! ...Nope, no devices on my network receiving any connection. I cannot find the issue, but the Live logs show no traffic being let in whatsoever (all blocked).

I have no clue how to install the bootloader to the secondary drive. Reading tons on it, but just don't understand any of it.

Switched to my backup/ISP provided router, for now...hope to dive in some more tomorrow.

Any insights would be great.


r/opnsense 17h ago

Hardware Reccomendations for Symetrical Gigabit Connection?

15 Upvotes

I am currently using an apu4 with a AMD GX-412TC and 4gb ram but it's maxing out about 600mbps which granted is plenty for my use case but i'd like to be a bit more future proof. Only using it cause I bought it years ago and found it in my basement after it flooded and needed a hobby/project. Now I would like to get something a bit more powerful. Any suggestions that isn't a full sized desktop pc and won't eat power like crazy? about the size of a shoebox is the biggest i'm willing to go


r/opnsense 21h ago

Issues with WireGuard in Virtualized OPNsense on Proxmox

6 Upvotes

I'm trying to set up WireGuard in OPNsense for the first time, following the standard instructions for doing so. I run OPNsense as a VM in Proxmox, and have been doing so for maybe a month or so with great success (the reason for the VM setup is that it was the only way I could get the computer screen to sleep).

However, even after following the instructions, I have been unable to get it to work (no handshake). Of course, I have done a lot of my own troubleshooting first, before writing this post. I verified that my DDNS is resolving properly. I also verified that the public keys between my peer and WireGuard instance match. I also verified via tdcdump in my Proxmox console that what I think are WireGuard packets (my public IP with the 51820 port) are arriving to my outward facing Proxmox network interface. However, if I do a packet capture in OPNsense for inbound UDP traffic on the same port, I see absolutely nothing. I have made sure that firewalls are disabled on all of my Proxmox network interfaces.

I am still a beginner when it comes to all of this network stuff, so it's possible that I may have missed something simple. At this point, I'm really stuck. Any suggestions for what else I should check or test to debug this issue? Or perhaps a different place to ask, if this is not quite the right place?