Forum Discussion

Cirrus

Jun 20, 2019

Log client source IP when connecting to TCP Virtual by iRule

Hi All, I received the request if it is possible to log the client IP when connecting to the virtual IP. We did this already based on an HTTP Virtual but now it's for an SMTP relay with regular T...

Cirrostratus

you can try below as well

when CLIENT_ACCEPTED {
        # Get time for start of TCP connection in milleseconds
        set tcp_start_time [clock clicks -milliseconds]
 
        # Log the start of a new TCP connection
        log local0. "New TCP connection from [IP::client_addr]:[TCP::client_port] to [IP::local_addr]:[TCP::local_port]"
    }
 
    when LB_SELECTED {
        log local0. "Client [IP::client_addr]:[TCP::client_port]: Selected [LB::server]"
     }
     when SERVER_CONNECTED {
         log local0. "Client [IP::client_addr]:[TCP::client_port]: Connected to [IP::server_addr]:[TCP::server_port]"
     }
 
     when CLIENT_CLOSED {
         # Log the end time of the TCP connection
         log local0. "Closed TCP connection from [IP::client_addr]:[TCP::client_port] to [IP::local_addr]:[TCP::local_port] (open for: [expr {[clock clicks -milliseconds] - $tcp_start_time}] ms)"
    }