Feel free to test your SSH bots and HTTP bots against mirror.newsdump.org
Paramiko v4.0.0 (the latest) gets past the version string, it seems, but dies instantly on failed KEX, which is another convenient incompatibility. It does mean that even legitimate SSH bots in Python will fail though.
I am having fun playing with the slow syn flood of spoofed packets someone is sending. I appreciate them sending it. I like the variability in the TCP MSS, TTL, Window sizes they are sending.
Thus far I am letting some leak through it would seem.
Thus far 2388 requests to this confused-bots file have been let through and 3226 have been assumed to be bots.