Fail2Ban; Table 16: Fail2Ban Settings; Figure 32: Configure Dynamic Defense - Grandstream Networks UCM6510 User Manual

FAIL2BAN

Fail2Ban feature on the UCM6510 provides intrusion detection and prevention for authentication errors in
SIP REGISTER, INVITE and SUBSCRIBE. Once the entry is detected within "Max Retry Duration", the
UCM6510 will take action to forbid the host for certain period as defined in "Banned Duration". This feature
helps prevent SIP brute force attacks to the PBX system.
Global Settings
Enable Fail2Ban
Banned Duration
Max Retry Duration
MaxRetry
Fail2Ban Whitelist
Local Settings
Asterisk Service
Firmware Version 1.0.10.39

Figure 32: Configure Dynamic Defense

Table 16: Fail2Ban Settings

Enable Fail2Ban. The default setting is disabled. Please make sure both "Enable
Fail2Ban" and "Asterisk Service" are turned on in order to use Fail2Ban for SIP
authentication on the UCM6510.
Configure the duration (in seconds) for the detected host to be banned. The default
setting is 300. If set to -1, the host will be always banned.
Within this duration (in seconds), if a host exceeds the max times of retry as
defined in "MaxRetry", the host will be banned. The default setting is 5.
Configure the number of authentication failures during "Max Retry Duration" before
the host is banned. The default setting is 10.
Configure IP address, CIDR mask or DNS host in the whiltelist. Fail2Ban will not
ban the host with matching address in this list. Up to 5 addresses can be added
into the list.
Enable Asterisk service for Fail2Ban. The default setting is disabled. Please make
sure both "Enable Fail2Ban" and "Asterisk Service" are turned on in order to use
Fail2Ban for SIP authentication on the UCM6510.
UCM6510 IP PBX User Manual Page 65 of 339