Nicolas Mailhot wrote:
Disabling ssh is not a good solution, many people need it. However the default fedora ssh setup is woefully insecure At least ssh rate-limiting should be in the default firewall install. Pam_abl would be even better (for other network services)
Blacklisting opens the potential for denial-of-service attacks. I'm not too familiar with the pam_abl implementation, but we should at least be very cautious if we choose to include and enable such features by default.
Same thing goes for rate-limiting.I'm not saying that either of these are *bad*. I'm saying that for default setups, we need to be very cautious with these things.
A more direct, less intrusive (for some/most) approach would perhaps be to disallow root logins by default?!?
/Thomas