Re: speaking of DoS, openssh and dropbear (CVE-2006-1206)

[Solar Designer <solar () openwall com>]

On Sun, Jan 01, 2012 at 08:34:45PM -0500, Mike O'Connor wrote:
> Any thoughts on what an appropriate default config for per-source
> limits should be?  How many connections from a given source would
> end up being too many for the default OpenSSH configuration?

For popa3d, the default limits currently are 50 per-source, 500 total.
Sessions are considered active for at least 10 seconds after start.

This is considering users behind NAT who have mail checked every few
minutes.

For OpenSSH, we can use similar settings or something more flexible
(more than just two limits).

Alexander