Packet flood blocking with csf

[SnowOverflow]

Hello.
Is there any ways to limit packets per second from same ip address with csf?
All what i've found is PORTFLOOD - which could limit connections per time, and CONNLIMIT which can limit connections per port.
Our server is under some kind of packet flood(looks like it's a LOIC), so, we really want to know if this restrictions available with csf.
Thanks in advance.

[SnowOverflow]

If there is no ways to block packet flood with csf - can i add a custom rule directly to iptables, and save it in csf ?
If i simple adding a rule in iptables - it'll gonna be deleted after "csf -r"