Forum Discussion

spacecc's avatar
spacecc
Icon for Altostratus rankAltostratus
Jul 25, 2024

iRule http host with wildcard domain

Hi, I want to ask a question. I want to limit the http::host wildcard domain in iRule. Allow *.domain.com, but disallow *.*.domain.com. Such as if http::host is a.aaa.com or b.aaa.com, then go on. If...
irule
LTM
  • spacecc's avatar
    spacecc
    Jul 25, 2024

    Thanks for all the advice. I have solved it.

    when HTTP_REQUEST {
        switch -regexp [HTTP::host] {
            "^[a-zA-Z0-9_-]+\.domain.com" {  }
            default { drop }
        }
    }

    This irule works. Thanks all.

Aswin_mk's avatar
Aswin_mk
Icon for Cumulonimbus rankCumulonimbus

For wild card we could use an equivalent string function: I just writing a rule, you can test it. if its not worked use pool as well

 

when HTTP_REQUEST {

    if { [string match "example*.domain.com" [string tolower [HTTP::host]]] } {

       

        }

else {

    reject

    }

}

spacecc's avatar
spacecc
Icon for Altostratus rankAltostratus
Jul 25, 2024

Thanks for reply, sir. Please check this.

My irule is:

when HTTP_REQUEST {
    if { [string match "*.hackit.com" [string tolower [HTTP::host]]] } {
        log local0. "Host is [HTTP::host]"
    } else {
        reject
    }
}

Check the log: 

<HTTP_REQUEST>: Host is www.gslb.hackit.com

The irule didn't work. My goal is if I access *.hackit.com, it passes. When I access *.*.hackit.com, it rejects.