Router not having WAN access

Started by justjake, March 23, 2026, 07:09:24 PM

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March 23, 2026, 07:09:24 PM
Hello there, please may I have some help?

My opnsense router is not conencting on WAN

I have a router behind a router setup, out of strict necessity. It worked fine. It was plugged into the ISP router, and had a dumb switch plugged in with all my devices plugged in. I will upload screenshots of my setup but it is very basic. I know Opnsense isn't meant to be a router, it's just something I found recomended on the internet. The VLAN part isn't active, I started the first step of making one and realised it was too complicated and not necessary. I have two NIC ports, the MOBO one goes to the ISP router, the other one goes to the dumb switch. The ISP router isn't showing the Opnsense as a connected device. My PC is connected to the dumb swicth but is falling back to wifi, yet can also connect to the media server that is on the dumb switch, so LAN access is fine. The opnsense just stopped doing WAN after weeks of uptime. I have cable tested EVERYTHING, I even pulled the ethernet socket out of the wall and checked for crossed wires it was fine. For now if I want stable ethernet I just plug my PC into the wall that the Opnsense would be and just use that, but lose my homelab. It's a very simpel setup really. I'm no tech expert and I only built this thing because other managed switches weren't working either.

Please may somebody help?
March 23, 2026, 07:13:45 PM #1
March 23, 2026, 07:27:22 PM #2
Maybe related, Maybe not :

Feel free to ENABLE the option 'Prevent Interface Removal' for all your Interfaces just to be sure nothing weird happens to them for whatever reason :)
Weird guy who likes everything Linux and *BSD on PC/Laptop/Tablet/Mobile and funny little ARM based boards :)
March 23, 2026, 07:29:29 PM #3
Quote from: nero355 on March 23, 2026, 07:27:22 PMFeel free to ENABLE the option 'Prevent Interface Removal' for all your Interfaces just to be sure nothing weird happens to them for whatever reason :)

Nice interface you got there. 'd be a shame if something happened to it 😎
Deciso DEC750
People who think they know everything are a great annoyance to those of us who do. (Isaac Asimov)
March 23, 2026, 07:32:26 PM #4
Ok, done that. When you make changes like this, is rebooting necessary? I frequently reboot after hitting "apply" and wonder if it is required.
March 23, 2026, 10:45:51 PM #5
Quote from: Patrick M. Hausen on March 23, 2026, 07:29:29 PM
Quote from: nero355 on March 23, 2026, 07:27:22 PMFeel free to ENABLE the option 'Prevent Interface Removal' for all your Interfaces just to be sure nothing weird happens to them for whatever reason :)
Nice interface you got there. 'd be a shame if something happened to it 😎
LOL! NICE! ^_^

Quote from: justjake on March 23, 2026, 07:32:26 PMOk, done that. When you make changes like this, is rebooting necessary? I frequently reboot after hitting "apply" and wonder if it is required.
Should not be necessary.
Weird guy who likes everything Linux and *BSD on PC/Laptop/Tablet/Mobile and funny little ARM based boards :)
March 23, 2026, 11:54:11 PM #6
Ok, one part of the puzzle is solved, the lead had become loose in the socket of the opnsense router. Now on the interfaces overview page, the status icon is green, and has gone from "no carrier" to "up". I have since released, renewed and flushed my DNS and restarted BOTH router and PC at the same time, I still have to WAN access.
Today at 03:07:08 PM #7
Quote from: justjake on March 23, 2026, 11:54:11 PMthe lead had become loose in the socket of the opnsense router.
So far I have experienced something like that two times with a RJ45 port on two Switches from completely different brands so I guess it can happen to NIC RJ45 ports too sadly...
Weird guy who likes everything Linux and *BSD on PC/Laptop/Tablet/Mobile and funny little ARM based boards :)
Today at 04:40:49 PM #8
Hmm well I opened up the case, checked the NIC card was secured, it is and am using a different cable, all secured and lights coming up. I just don't understand haha. Still no WAN access but everything seems setup fine.
Today at 05:05:03 PM #9
Ok something has changed...the performance. I noticed web pages were loading a lot snappier than they were before, like I was on ethernet again, I checked my network settings and it is acting kind of like it is connected? See the screenshots. Strangely if I disconnect from wifi though I get no internet. My media server on the lan is reachable but seems to have no WAN access either.
Today at 07:10:46 PM #10
Quote from: justjake on Today at 05:05:03 PMSee the screenshots.
Please try Disabling connections/Network Cards you are not using and only leaving the connection/Network Card you are using Enabled.

I don't trust Windows being smart enough to figure out which connection it should use to be honest and do the same all the time with one of my PCs that has multiple NICs connected to multiple networks or different network devices :)
Weird guy who likes everything Linux and *BSD on PC/Laptop/Tablet/Mobile and funny little ARM based boards :)
Today at 09:02:22 PM #11 Last Edit: Today at 09:03:58 PM by justjake Reason: extra information given
On windows? The whole Opnsense network has no WAN access. It can't access the web, or traceroute, the media server has no web access either. The opnsense router is seen on the ISP routers device list. I think the boost on network activity on my PC was just temporary.

EDIT: The Opnsense router has no extra or unused connections or network cards
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