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Forum Discussion

DifanZ's avatar
DifanZ
Icon for Cirrus rankCirrus
May 27, 2022

LTM two-way SSL authentication with a specific client cert, not CA cert

Hi experts, I am trying to set up the SSL two-way authentication following this link https://support.f5.com/csp/article/K12140946#test. It is successful when I choose a CA certificate in the "Truste...
certificate
devops
LTM
ssl
xuwen's avatar
xuwen
Icon for Cumulonimbus rankCumulonimbus
May 28, 2022
when CLIENTSSL_HANDSHAKE {
	if { [SSL::cert count] > 0 } {
		if { [X509::subject [SSL::cert 0]] contains "CN=xyz.example.com" } {
			return
		} else {
			log local0. "invalid client cert post, subject is: [X509::subject [SSL::cert 0]]"
			drop
		}
	}
}
DifanZ's avatar
DifanZ
Icon for Cirrus rankCirrus
May 28, 2022

Thank you Xuwen! So it is not possible to do it in the GUI, and an irule would be required for this, correct?

  • xuwen's avatar
    xuwen
    Icon for Cumulonimbus rankCumulonimbus
    May 29, 2022

    sure, you can don't need irules, only use GUI,First, you need to let Client SSL profile the option "Client Certificate" value set to "Require",  then you can use a self-signed CA certificate(

    ), instead of using a public CA certificate, use the self-signed CA certificate to sign the client certificate to test the verification, and use curl --key xxx --cert xxx on the client side to test two-way ssl