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MaxMedov's avatar
MaxMedov
Icon for Cirrostratus rankCirrostratus
Jan 10, 2023

iRule to accept client then check certificate

Hi everyone 🙂
I need help combining an iRule with doing this:
1. Accept client with specific IP only 
2. For all the rest (not that specific IP), I want to check if the CN contains, for example, *abc.com
If yes - accept that the client
if no - reject the client.

Thank you!

devops
  • Paulius's avatar
    Paulius
    Icon for MVP rankMVP
    Jan 10, 2023

    MaxMedov The following could work for you and you can just add additional else if statements for the differents hosts that you have to check. Keep in mind the following has an iRule and then the CLI configuration for an associated data-group for a list of IPs that you want to allow without verifying the CN.

    *** iRule ***

when CLIENT_ACCEPTED priority 500 {

    set DEFAULT_POOL [LB::server pool]

}

when HTTP_REQUEST priority 510 {

    set HOST [string tolower [HTTP::host]]

    if { !([--class match [IP::remote_addr] == CLASS_NoHostVerificationIPs]) } {
        if { !($HOST == "www.domain.com") } {
            reject
        else { 
            pool $DEFAULT_POOL
        }
    } else {
        pool $DEFAULT_POOL
    }

}

*** Data-group ***

ltm data-group internal CLASS_NoHostVerificationIPs {
    records {
        1.1.1.1/32 { }
    }
    type ip
}