On Fri, 10 Mar 2006, Matt Johnston wrote: > Dropbear 0.48 mitigates this issue by having a per-IP limit > as well as a global limit - this will at least prevent an > IP-deprived attacker from denying service. > > It's worth noting that various other network services (such > as netkit-inetd and OpenSSH) have the same design issues, at > least in default configurations. OpenSSH has had connection-flood DoS mitigation since 2000, in the form of random early drop of connections so legitimate users have a probabalistic change of getting in. See the "MaxStartups" documentation in sshd_config(5) -d
