[jacob019]

Buy a small cheap computer with two ethernet ports and run debian.

[spydum]

And most importantly: keep it updated.

About the only thing I would trust without updates is a bsd box. And even that, may eventually fall victim.

[oprah2018]

Ok, but what if you are very busy and you don't have time for that.

[jacob019]

which BSD? And how is hardware support these days?