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Re: Options for dealing with sshd brute force attacks



For many machines, running blocklistd helps tremendously. But what happens
when blocklistd won't help because npf can't be used?

Why can't you use npf?

I'm sure you remember this thread:

https://mail-index.netbsd.org/tech-net/2024/10/18/msg008895.html

While PR kern/57208 was fixed and no longer happens, there were other, different panics after that fix.

I haven't been able to reproduce this in any other environment, and so long as this machine is routing a public subnet, I'm reluctant to do more testing on it unless I'm sure that I can get to it quickly when it happens (virtually, via serial console) and that the information will help lead to a fix.

It may be that I decide to do this, anyway, because this situation is no fun. If I do, I'll try to get all the information you suggested in that thread.

Thanks!
John


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