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jomedusa's avatar
jomedusa
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Jan 14, 2021

iRule to email when TLS version is chosen

We are working to remove all TLS 1.0 and 1.1 connections to our VIP's. I can still see a small amount of connections and would like to trigger an email with the VIP and client ip address. I have co...
application delivery
iRules
LTM
  • Karthick1's avatar
    Karthick1
    Jan 14, 2021

    Dear , 

     

    Please check the below irule and user alert configuration to send email. 

    Below irule is to log the Client TLS Version : 

    Irule name : TLS_ver_email_irule

     

    when CLIENTSSL_HANDSHAKE {

      log local0.info " VIP -[IP::local_addr] client_connected_ver [SSL::cipher version]"

    }

     

     

    Edit the user alert configuration “/config/”  to send the matched logs to email. 

     

    alert TLS "Rule /Common/TLS_ver_email_irule <CLIENTSSL_HANDSHAKE>: (.*) TLSv1.1" {

    email toaddress=" kkk@abc.com"

      fromaddress="@abc.com"

    body="client connected using TLSv1.1"

    }

     

     

    Note: this match is based on irule name as well ,so be attention while creating the alerts in user configuration file, repeat the alert configuration for tslv1.0 

     

     

    Regards, 

    Karthick Yokesh K

jomedusa's avatar
jomedusa
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Thanks so much for the response...could you explain more about the user alert portion? I am working with a development F5 box, for testing. the user_alert.conf file was blank and there was no smtp servers setup. I have setup an smtp server within the gui and tested it out...I entered the alert information in the user_aler.conf and restarted alertd. I don't have any indication that any emails are being generated, I can see the entries in the ltm logs. I modified the ssmtp config per the post to allow for snmp trap alerts. Could you please offer any insights on how to troubleshoot?

 

Thanks,

 

Joe

jomedusa's avatar
jomedusa
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Jan 14, 2021

I got it working...I had an extra space in the user_alert.conf file...

 

Thanks so much again...

 

Joe