VPN Junos Pulse restrict attempts to login

Hi all,

I've seen some brute force attempts to login in to my VPN.

Due to very large passwords and usernames, they could not log in.

I would like to know, how i can limit these attempts for login for VPN?

thanks!

PS:

set system login retry-options tries-before-disconnect 5
set system login retry-options backoff-threshold 3
set system login retry-options backoff-factor 10
set system login retry-options lockout-period 4

This is already done but for local accounts i guess?