Forum Discussion

mshoaib's avatar
mshoaib
Icon for Cirrus rankCirrus
Jun 04, 2020

Server SSL Profile - how to use selectively

Hi there,   I have a situation and wonder to check here if one came across the same.   I have a VIP listening on https with SSL Client profile configured with a valid SSL Certificate. This VI...
application delivery
BIG-IP
iRules
LTM
server ssl profile
virtual
Sachin-Garg's avatar
Sachin-Garg
Icon for Altostratus rankAltostratus
Jun 05, 2020

Hi Muhammad,

 

Can you please share the details of your iRule and VIP

 

There are 2 ways you can try accomplish this

 

Method 1 - Using iRule

 

You need to add a default ssl server profile or the required Server side SSL profile to your VIP. Then updatemy your irule to initially disable the server side ssl for all sites and then renable it on the website where you needed it on.

 

  1. when CLIENT_ACCEPTED {
  2. SSL::disable serverside
  3. }
  4.  
  5. when HTTP_REQUEST {
  6. switch [string tolower [HTTP::host]] {
  7. site1.website.com { pool site1.website.com_pool }
  8. site2.website.com { pool site2.website.com_pool }
  9. SSLsite3.website.com {
  10. SSL::enable serverside
  11. pool SSLsite3.website.com_pool
  12. }
  13. site4.website.com { pool site4.website.com_pool }
  14. default { reject }
  15. }
  16. }

 

Method 2 - You can do easier since version 11.5 (feature is available in 11.4 but not working...) with Local traffic policies.

 

Rule 1:

 

  • Condition :
  • action :
    • forward pool site1.website.com_pool
    • serverssl disable

Rule 2:

 

  • Condition :
  • action :
    • forward pool site2.website.com_pool
    • serverssl disable

Rule 3 (SSL Site):

 

  • Condition :
  • action :
    • forward pool site3.website.com_pool

 

  • mshoaib's avatar
    mshoaib
    Icon for Cirrus rankCirrus
    Jun 05, 2020

    Hi Sachin-Garg,

    I have fairly long iRules but below I copied the compact version. This iRule attached to a VIP where ONLY client ssl profile has been applied but no server ssl.

    All the pools referenced are listening on port 80 and expecting clear text (non-ssl) traffic except for the pool "mxz" (line #8)

    This is a new application and needs ssl traffic continue all the way from the browser.

    I haven't used and explored "policies" on the LTM but really like the way you have mentioned to solve the problem.

    Are there any drawbacks using Policies instead of updating iRules in this case ?

    if this POC works then I have 500+ similar VIP/iRule combo that will embrace this change. 

     
 
when HTTP_REQUEST {
 
    if { [HTTP::uri] starts_with "/login/data" } {
        pool app8-web
    } elseif { [HTTP::uri] starts_with "/app/rs"} {
        pool mxz
    } elseif { [HTTP::uri] starts_with "/v2.2/esa/api" } {
        pool app9-esa
    } elseif { [HTTP::uri] starts_with "/v2.1/esa/api" } {
        pool app9-esa
    } elseif { ([HTTP::uri] starts_with "/login/v1") or ([HTTP::uri] starts_with "/login/rs" ) or ([HTTP::uri] starts_with "/login/api" )} {
        if { [HTTP::header value "Auth"] starts_with "Client"} {
            HTTP::redirect "https://www.somedomain.com"
        }
        else {
            pool login-app
        }
    }
}
 
 
 
when HTTP_RESPONSE {
 
  if { !([HTTP::header exists "X-Frame-Options"])} { HTTP::header insert X-Frame-Options "SAMEORIGIN" }
  if { !([HTTP::header exists "X-XSS-Protection"])} { HTTP::header insert X-XSS-Protection "1; mode=block" }
  if { !([HTTP::header exists "X-Content-Type-Options"])} { HTTP::header insert X-Content-Type-Options "nosniff" }
  if { !([HTTP::header exists "Content-Security-Policy"])} { HTTP::header insert Content-Security-Policy "frame-ancestors 'self' " }
  if { !([HTTP::header exists "Strict-Transport-Security"])} { HTTP::header insert "Strict-Transport-Security" "max-age=16070400; includeSubdomains" }
 
 
}