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kkriss
New Contributor

SMTP Auth Failure - too many brute force

Hi

i'm using Fortimail 400e, how to prevent to brute force attack to smtp to port 25?

 

Maybe connect fortigate between WAN and fortimail but how to configure fortigate to prevent brute force attack to smtp?

Now i'm using juniper netscreen just to lock or unlock ports, but i can change it to FG.

1 REPLY 1
Carl_Windsor_FTNT

This can be done on FML.  See page 298 of the CLI Guide

 

system security authserver Use this command to modify the tracking functions used to prevent password guessing attempts. The sender IP addresses in the exempt list will bypass the security checking.

Syntax:

config system security authserver
config exempt-list
edit auth_exempt_id
set sender-ip-mask
end
set status (disable | enable | monitor-only)
end

Dr. Carl Windsor Field Chief Technology Officer Fortinet

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