Forum Discussion

Zuke_254875's avatar
Zuke_254875
Icon for Altostratus rankAltostratus
Apr 03, 2019

Port range iRule

We have a requirement for a wildcard virtual server and to allow access to the application servers on port range between 30000 and 32768. When I apply the below iRule, I'm unable to reach the serve...
application delivery
iRules
LTM
CharlesCS's avatar
CharlesCS
Icon for Cirrus rankCirrus
Apr 03, 2019

In this context, 

TCP::client_port
refers to the ephemeral port that the client system uses to connect to the virtual server. To specify the virtual server's port range, use 
TCP::local_port
instead. Also, "then" is redundant and may cause an error.

when CLIENT_ACCEPTED {
    if { ( [TCP::local_port] < 30000 ) or ( [TCP::local_port] > 32768 ) } {
        reject
    }
}