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Messages - JustSecure

#1
25.7, 25.10 Series / Seting up Vlan
January 23, 2026, 03:26:59 PM
Hello everybody,

Im new on the forum, and new to opnsense in general. Im not new to tech tho.

So for my question, i have setup a  opnsense router in this hardware.

Intel(R) Core(TM) i3-4130 CPU @ 3.40GHz (2 cores, 4 threads) 8GB. its a old optiplex 3020.
i sticked a extra  nic in there, and  setup everything for my provider odido(NL).
They require i made a  vlan with tag 300(vlan02 odido), i assigned that vlan  to my WAN interface.
I also have the LAN interface (em0).

Everything works as expected in have installed zenarmor adguard home. again this all works.

But no i wanted to make a seperate vlan for my IOT/hacking adventures, my kid likes it alot.
So  i made a  vlan  which i pointed to my WAN interface, i thought everything worked, i did apply all changes. butafter some time all internet stopped working all together, it was late in the evening so i even had to drag a  monitor and keyboard over since i didnt have ssh  openend.
I did reset all the vlan's and re apply'd them.

Maybe somebody can explain when i did wrong? or maybe help me setup this extra vlan.

Thanks in advance.