IRule to remove server banner from header reply

Hi Guys, I stumbed across this thread and wanted to ask if there was an easy way to remove the Server: BigIP from the response header. I am actually using an iRule, based on Server Resource Cloaking wiki (https://devcentral.f5.com/wiki/iRules.ServerResourceCloaking.ashx) but BigIP still returns the Server header even though it is not listed in the preserve list.

 

 

I also found this link about using the HTTP::Respond but I'm not sure how this would impact my application (https://devcentral.f5.com/wiki/iRules.http__respond.ashx)

 

 

Here is my iRule:

 

 

when RULE_INIT {

 

Create a list of the response headers to preserve. This needs to be tailored to the application!

 

set static::headers_to_preserve [list \

 

Accept-Range \

 

Cache-Control \

 

Content-Encoding \

 

Content-Length \

 

Content-Type \

 

Etag \

 

Last-Modified \

 

Pragma \

 

Set-Cookie \

 

Location \

 

Content-Disposition \

 

Transfer-Encoding \

 

Content-Security-Policy \

 

Strict-Transport-Security \

 

X-Content-Type-Options \

 

X-Frame-Options \

 

X-XSS-Protection \

 

X-Content-Security-Policy \

 

]

 

 

Log debug messages to /var/log/ltm? 1=yes, 0=no.

 

set static::clocking_debug 0

 

}

 

when HTTP_RESPONSE {

 

Remove all headers but those in the preserve list

 

foreach aHeader [HTTP::header names] {

 

if {not ([matchclass $static::headers_to_preserve equals $aHeader])}{

 

if {$static::clocking_debug}{log local0. "Removing: $aHeader: [HTTP::header value $aHeader]"}

 

HTTP::header remove $aHeader

 

}

 

}

 

}

 

 

Thanks in advance for your help!