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Jason_Drake_204's avatar
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Jul 07, 2015

Forwarding of X509 HTTP Header to application after termination of SSL

Hi, I'm fairly new to F5 and was wondering if there was a way to insert part of the x509::subject to the HTTP header.

A regular iRule for this would look partly like this


if { [SSL::cert count] > 0 } {
    HTTP::header insert CERTSUBJECT [X509::subject [SSL::cert 0]]


however I would like to just get the 10 digit EDIPI 9999999999 below:

Subject CN=John.D.Smith.9999999999,OU=CONTRACTOR,OU=PKI,OU=DoD,O=U.S.

Is there a way to do this? Thanks J

1 Reply

  • You can use a combination of string operations to get to this value. Try this:

    set subj [findstr [X509::subject [SSL::cert 0]] "CN=" 3 ","]
    set EDIPI [string range $subj [expr [string last "." $subj] +1] end]

    The finsdtr command will return everything after "CN=" and before the next comma:


    And the string functions will return the value after the last period to the end of the string.