This technical article provides information in how to enable TCP connection limits per client.
How do I enable TCP connection limits per client?
How do I vary the TCP connection limit for a specific client?
In order to set individual TCP limits, from the CLI run the following:
SGOS# conf t
SGOS#(config attack-detection) client
SGOS#(config client) enable-limits
SGOS#(config client) create 192.168.168.168
SGOS#(config client) edit 192.168.168.168
SGOS#(config client 192.168.168.168) connection-limit 54
connection-limit, Indicates the number of simultaneous TCP connections between 1 and 65534. The default is 100.
enable-limits |disable-limits, Toggles between true (enabled) and false (disabled). The default is false. This is a global setting and cannot be modified for individual clients.
attack-detection, configuration is used to control the behavior of virus infected machines behind the appliance.