Ssh Access; Figure 32: Ssh Access - Grandstream Networks UCM6100 Series User Manual

Max Retry Duration
MaxRetry
Fail2Ban Whitelist
Local Settings
Asterisk Service
Listening Port
Number
MaxRetry
Login Attack Defense
Listening Port
Number
MaxRetry
Blacklist
Black List

SSH Access

SSH switch now is available via Web GUI and LCD. User can enable or disable SSH access directly from Web
GUI or LCD screen. For web SSH access, please log in UCM6100 web interface and go to Web GUI→System
Settings→Security Settings→SSH Access. By default, SSH access is disabled for security concerns. It is
highly recommended to only enable SSH access for debugging purpose.
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 600.
Configure the number of authentication failures during "Max Retry Duration" before
the host is banned. The default setting is 5.
Configure IP address, CIDR mask or DNS host in the whitelist. Fail2Ban will not
ban the host with matching address in this list. Up to 20 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 to use Fail2Ban
for SIP authentication on the UCM6100.
Configure the listening port number for the service. By default, port 5060 will be
used for UDP and TCP, and port 5061 will be used for TLS.
Configure the number of authentication failures during "Max Retry Duration" before
the host is banned. The default setting is 10. Please make sure this option is
properly configured as it will override the "MaxRetry" value under "Global Settings".
Enables defense against excessive login attacks to the UCM's web GUI.
The default setting is disabled.
This is the Web GUI listening port number which is configured under System
Settings→HTTP Server→Port. The default is 8089.
When the number of failed login attempts from an IP address exceeds the
MaxRetry number, that IP address will be banned from accessing the Web GUI.
Users will be able to view the IPs that have been blocked by UCM.

Figure 32: SSH Access

UCM6100 Series User Manual
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