cPanel Brute Force Attack

[finer recliner]

what is the error message you get when trying to access cPanel from ubuntu?

[HermanAB]

When you run a public server, you should always install a rate limit rule in order to guard against brute forcers:

# General new connection rate limiting for DOS and Brute Force protection
iptables -I INPUT -p TCP -m state --state NEW -m limit --limit 30/minute --limit -burst 5 -j ACCEPT

It will slow down continuous retries from the same source address, without affecting normal operation.

Cheers,

Herman