this post was submitted on 15 Apr 2026
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I do have an old laptop, and I could install OPNSense on it, though I'm not sure if it has a second NIC card, which seems to be a requirement for running any router software on a PC. Please correct me if I'm wrong, tho.
Yeah that’s kind of the downside. I considered using a Raspberry Pi but it felt weird to use its Ethernet port alongside some micro USB → Ethernet adapter that probably wouldn’t hit 1 Gbps anyway.
Ah, so it just needs another ethernet port, if I understand you correctly? So an ethernet adapter would work?
I used an USB Ethernet adapter on my OPNSense setup and it wasn't stable enough. It basically required a reboot every other day. A PCI-E ethernet card solved my stability issues. Just my experience.