Forum Discussion

Nimbostratus

Sep 22, 2022

what's wrong with my syntax in this iRule?

I want to write and iRule to key on a source IP and log the pre-shared master keys:
when CLIENT_ACCEPTED {
if { [IP::addr [IP::client_addr] equals 10.10.10.10] } {
when CLIENTSSL_HANDSHAKE {
log local0. "[TCP::client_port] :: RSA Session-ID:[SSL::sessionid] Master-Key:[SSL::sessionsecret]"
}
when SERVERSSL_HANDSHAKE {
log local0. "[TCP::client_port] :: RSA Session-ID:[SSL::sessionid] Master-Key:[SSL::sessionsecret]"
}
}

Can't have iRule events nested inside other events.

when CLIENTSSL_HANDSHAKE {
    if { [IP::addr [IP::client_addr] equals 10.10.10.10] } {
        log local0. "[TCP::client_port] :: RSA Session-ID:[SSL::sessionid] Master-Key:[SSL::sessionsecret]"
    }
}

when SERVERSSL_HANDSHAKE {
    if { [IP::addr [IP::client_addr] equals 10.10.10.10] } {
        log local0. "[TCP::client_port] :: RSA Session-ID:[SSL::sessionid] Master-Key:[SSL::sessionsecret]"
    }
}

Kevin_Stewart

Sep 22, 2022

Just do this in the server side event to see what the client IP is:

when SERVERSSL_HANDSHAKE {
    log local0. "client IP: [IP::client_addr]"
    if { [IP::addr [IP::client_addr] equals 10.10.10.10] } {
        log local0. "[TCP::client_port] :: RSA Session-ID:[SSL::sessionid] Master-Key:[SSL::sessionsecret]"
    }
}

Kevin_Stewart
Employee
Sep 22, 2022
Can't have iRule events nested inside other events.

when CLIENTSSL_HANDSHAKE { if { [IP::addr [IP::client_addr] equals 10.10.10.10] } { log local0. "[TCP::client_port] :: RSA Session-ID:[SSL::sessionid] Master-Key:[SSL::sessionsecret]" } } when SERVERSSL_HANDSHAKE { if { [IP::addr [IP::client_addr] equals 10.10.10.10] } { log local0. "[TCP::client_port] :: RSA Session-ID:[SSL::sessionid] Master-Key:[SSL::sessionsecret]" } }
- Ken-Dawg
  Nimbostratus
  Sep 22, 2022
  Thank you so much Kevin, although for my SERVERSSL_HANDSHAKE i think i should use my self IP? Unless the iRule only looks at the cs-client-addr?
  - Kevin_Stewart
    Employee
    Sep 22, 2022
    You're saying, if the client source address is 10.10.10.10, log the client side session-id and server side session-id.
    
    [IP::client_addr] is still the client source, even on the server side.