iRule client auth header

Question

Hi All,

I am looking for an assistance on issue I'm facing with one of our applications.

Our setup is as follows:

client &gt; F5 (SSL offload client/server profile) &gt; backend server

- We SSL offloading on F5 with client profile set to use external SSL certificate and server profile to use internal SSL certificate

- Client SSL profile is set to:
     - Require auth
     - frequency once
     - CA bundle is provided for the client's cert verification

- Server SSL profile is standard set
- We have iRule which passes the .x509 header onto the backend so source and destination can auth directly

when CLIENTSSL_CLIENTCERT { 
       log local0.info "First line ---- Session ID: [SSL::sessionid] Cert ID: [SSL::cert 0]"
       set error_code [SSL::verify_result]
       set cur [SSL::sessionid] 
       set ask [session lookup ssl $cur]  
        if { $ask eq ""}{  
         log local0.info "Cert verify result - [X509::verify_cert_error_string $error_code]"  
         session add ssl [SSL::sessionid] [SSL::cert 0] 
         log local0.info "Session ID: [SSL::sessionid] Cert ID: [SSL::cert 0]"
         return
      } 
    }

when HTTP_REQUEST { 
       set id [SSL::sessionid] 
       set the_cert [session lookup ssl $id] 
       set error_code [SSL::verify_result] 
       log local0.info "Second line ---- Session ID: [SSL::sessionid] Cert ID: [SSL::cert 0]"
       if { $the_cert eq ""} {
             log local0.info "Cert verify result - [X509::verify_cert_error_string $error_code]" 
             SSL::session invalidate 
             SSL::authenticate once
             SSL::authenticate depth 9 
             SSL::cert mode require 
             SSL::renegotiate enable
             SSL::renegotiate 
             log local0.info "Renegotiating session..."

} else {
         log local0.info "SSL certificate found, inserting .x509 into HTTP request, cert verify result - [X509::verify_cert_error_string $error_code]"
         HTTP::header insert X-Client-Cert [X509::whole $the_cert]

HTTP::uri /new_uri
         log local0.info "Third line ---- Session ID: [SSL::sessionid] Cert ID: [SSL::cert 0]"

}
    }

grabarz666 · Answer

Eventually the above set up works, but we get occassions (3-4 times per hour on less frequent traffic) when application breaks.

NORMAL SESSION (bottom to up order) - SSL handshake first followed by HTTP_REQUEST:
===================================================================================

Mon Dec 4 20:42:30 GMT 2017  info  xyz  tmm2[14307]     Rule /Common/irule-xyz : Third line ---- Session ID: 6bec8b8b1dd0fb69efaa0c4a48b409f9c7f3d59ccc2826557479aaa18fbaea18 Cert ID: 0‚0‚þ ��š0  *†H†÷  ��010Uxyz xyz xyz0ReplaceWith 170102135806Z 190102135806Z0U1 0 UGB1*0(U !xyz xyz.10Uxyz.xyz.com0‚"0  *†H†÷ ��‚��0‚ ‚��ÔN‰xÉ D÷ô­àe½[æ¿i/›¤zÇ:F³¥´È5]Ú»Ûc‰E/òWKm¦�aÝÃm£Úp¾�Sô¡ M\H³¸*î&lt;1{ž»ä¹l²×ò*ReplaceWithó“8!Š}"u~zf¿Ô�èß÷4e^Ð‡r‘RgÖ_HŸÛZ9íÐšw8ò� &lt;0NKÀ³lWuž±�¸Èäü¼Õv�\zíI¨j@$»ô ¨È.ŠÔ°SÝóùYÍllÕv,îóÀâvh0£½��4Æ6?2&gt;öõzE±„—8&lt;]-@pÁ]²ö{t4;^·4dúÊm„yçMB~; jÝdœ�B&amp;ÉÜ&gt;q ¾û!0,)��£‚$0‚ 0Uefæåœyº2}^sÓ„Øƒ..Šs0U0€w,å×ürS––ÌÝ"[]P€&gt;é¾±0Uÿ0ÿ��0U ÿ00 +‚ž90?+3010/+0† 
Mon Dec 4 20:42:30 GMT 2017  info  xyz  tmm2[14307]     Rule /Common/irule-xyz : SSL certificate found, inserting .x509 into HTTP request, cert verify result - ok  
Mon Dec 4 20:42:30 GMT 2017  info  xyz  tmm2[14307]     Rule /Common/irule-xyz : Second line ---- Session ID: 6bec8b8b1dd0fb69efaa0c4a48b409f9c7f3d59ccc2826557479aaa18fbaea18 Cert ID: 0‚0‚þ ��š0  *†H†÷  ��010Uxyz xyz xyz0ReplaceWith 170102135806Z 190102135806Z0U1 0 UGB1*0(U   
Mon Dec 4 20:42:30 GMT 2017  info  xyz  tmm2[14307]     Rule /Common/irule-xyz : Session ID: 6bec8b8b1dd0fb69efaa0c4a48b409f9c7f3d59ccc2826557479aaa18fbaea18 Cert ID: 0‚0‚þ ��š0  *†H†÷  ��010Uxyz xyz xyz0ReplaceWith 170102135806Z 190102135806Z0U1 0 UGB1*0(U !xyz xyz.10Uxyz.xyz.com0‚"0  *†H†÷ ��‚��0‚ ‚��ÔN‰xÉ D÷ô­àe½[æ¿i/›¤zÇ:F³¥´È5]Ú»Ûc‰E/òWKm¦�aÝÃm£Úp¾�Sô¡ M\H³¸*î&lt;1{ž»ä¹l²×ò*ReplaceWithó“8!Š}"u~zf¿Ô�èß÷4e^Ð‡r‘RgÖ_HŸÛZ9íÐšw8ò� &lt;0NKÀ³lWuž±�¸Èäü¼Õv�\zíI¨j@$»ô ¨È.ŠÔ°SÝóùYÍllÕv,îóÀâvh0£½��4Æ6?2&gt;öõzE±„—8&lt;]-@pÁ]²ö{t4;^·4dúÊm„yçMB~; jÝdœ�B&amp;ÉÜ&gt;q ¾û!0,)��£‚$0‚ 0Uefæåœyº2}^sÓ„Øƒ..Šs0U0€w,å×ürS––ÌÝ"[]P€&gt;é¾±0Uÿ0ÿ��0U ÿ00 +‚ž90?+3010/+0†http://xyz.xyz.com/etn/etn.crt04  
Mon Dec 4 20:42:30 GMT 2017  info  xyz  tmm2[14307]     Rule /Common/irule-xyz : Cert verify result - ok  
Mon Dec 4 20:42:30 GMT 2017  info  xyz  tmm2[14307]     Rule /Common/irule-xyz : First line ---- Session ID: 6bec8b8b1dd0fb69efaa0c4a48b409f9c7f3d59ccc2826557479aaa18fbaea18 Cert ID: 0‚0‚þ ��š0  *†H†÷  ��010U0ReplaceWith 170102135806Z 190102135806Z0U1 0 UGB1*0(U !0U0‚"0  *†H†÷ ��‚��0‚ ‚��ÔN‰xÉ D÷ô­àe½[æ¿i/›¤zÇ:F³¥´È5]Ú»Ûc‰E/òWKm¦�aÝÃm£Úp¾�Sô¡ M\H³¸*î&lt;1{ž»ä¹l²×ò*ReplaceWithó“8!Š}"u~zf¿Ô�èß÷4e^Ð‡r‘RgÖ_HŸÛZ9íÐšw8ò� &lt;0NKÀ³lWuž±�¸Èäü¼Õv�\zíI¨j@$»ô ¨È.ŠÔ°SÝóùYÍllÕv,îóÀâvh0£½��4Æ6?2&gt;öõzE±„—8&lt;]-@pÁ]²ö{t4;^·4dúÊm„yçMB~; jÝdœ�B&amp;ÉÜ&gt;q ¾û!0,)��£‚$0‚ 0Uefæåœyº2}^sÓ„Øƒ..Šs0U0€w,å×ürS––ÌÝ"[]P€&gt;é¾±0Uÿ0ÿ��0U ÿ00 +‚ž90?+3010/+0†

BROKEN SESSION:(bottom to up order) - it seems like renegotiation as HTTP_REQUEST happens first ?, then CLIENTSSL_CLIENTCERT event does not re-call another HTTP_REQUEST as is normal session):
============================================================================================================================================================================

Mon Dec 4 21:18:30 GMT 2017  info  xyz    tmm7[14307]     Rule /Common/irule-xyz : Session ID: 6bec8b8b1dd09d6aefaa0c4a48b40cf93e8a72763551dfe67479aaa18fbae2e8 Cert ID: 0‚0‚þ ��š0  *†H†÷  ��010Uxyz xyz xyz0ReplaceWith 170102135806Z 190102135806Z0U1 0 UGB1*0(U !xyz xyz.10Uxyz.xyz.com0‚"0  *†H†÷ ��‚��0‚ ‚��ÔN‰xÉ D÷ô­àe½[æ¿i/›¤zÇ:F³¥´È5]Ú»Ûc‰E/òWKm¦�aÝÃm£Úp¾�Sô¡ M\H³¸*î&lt;1{ž»ä¹l²×ò*ReplaceWithó“8!Š}"u~zf¿Ô�èß÷4e^Ð‡r‘RgÖ_HŸÛZ9íÐšw8ò� &lt;0NKÀ³lWuž±�¸Èäü¼Õv�\zíI¨j@$»ô ¨È.ŠÔ°SÝóùYÍllÕv,îóÀâvh0£½��4Æ6?2&gt;öõzE±„—8&lt;]-@pÁ]²ö{t4;^·4dúÊm„yçMB~; jÝdœ�B&amp;ÉÜ&gt;q ¾û!0,)��£‚$0‚ 0Uefæåœyº2}^sÓ„Øƒ..Šs0U0€w,å×ürS––ÌÝ"[]P€&gt;é¾±0Uÿ0ÿ��0U ÿ00 +‚ž90?+3010/+0†http://xyz.xyz.com/etn/etn.crt04  
Mon Dec 4 21:18:30 GMT 2017  info  xyz    tmm7[14307]     Rule /Common/irule-xyz : Cert verify result - ok  
Mon Dec 4 21:18:30 GMT 2017  info  xyz    tmm7[14307]     Rule /Common/irule-xyz : First line ---- Session ID: 6bec8b8b1dd09d6aefaa0c4a48b40cf93e8a72763551dfe67479aaa18fbae2e8 Cert ID: 0‚0‚þ ��š0  *†H†÷  ��010Uxyz xyz xyz0ReplaceWith 170102135806Z 190102135806Z0U1 0 UGB1*0(U !xyz xyz.10Uxyz.xyz.com0‚"0  *†H†÷ ��‚��0‚ ‚��ÔN‰xÉ D÷ô­àe½[æ¿i/›¤zÇ:F³¥´È5]Ú»Ûc‰E/òWKm¦�aÝÃm£Úp¾�Sô¡ M\H³¸*î&lt;1{ž»ä¹l²×ò*ReplaceWithó“8!Š}"u~zf¿Ô�èß÷4e^Ð‡r‘RgÖ_HŸÛZ9íÐšw8ò� &lt;0NKÀ³lWuž±�¸Èäü¼Õv�\zíI¨j@$»ô ¨È.ŠÔ°SÝóùYÍllÕv,îóÀâvh0£½��4Æ6?2&gt;öõzE±„—8&lt;]-@pÁ]²ö{t4;^·4dúÊm„yçMB~; jÝdœ�B&amp;ÉÜ&gt;q ¾û!0,)��£‚$0‚ 0Uefæåœyº2}^sÓ„Øƒ..Šs0U0€w,å×ürS––ÌÝ"[]P€&gt;é¾±0Uÿ0ÿ��0U ÿ00 +‚ž90?+3010/+0†http://xyz.xyz.c  
Mon Dec 4 21:18:30 GMT 2017  info  xyz    tmm7[14307]     Rule /Common/irule-xyz : Renegotiating session...  
Mon Dec 4 21:18:30 GMT 2017  info  xyz    tmm7[14307]     Rule /Common/irule-xyz : Cert verify result - ok  
Mon Dec 4 21:18:30 GMT 2017  info  xyz    tmm7[14307]     Rule /Common/irule-xyz : Second line ---- Session ID: 6bec8b8b1dd09d6defaa0c4a48b40cf93e8a72763551dfef7479aaa18fbae398 Cert ID: 0‚0‚þ ��š0  *†H†÷  ��010Uxyz xyz xyz0ReplaceWith 170102135806Z 190102135806Z0U1 0 UGB1*0(U !xyz xyz.10Uxyz.xyz.com0‚"0  *†H†÷ ��‚��0‚ ‚��ÔN‰xÉ D÷ô­àe½[æ¿i/›¤zÇ:F³¥´È5]Ú»Ûc‰E/òWKm¦�aÝÃm£Úp¾�Sô¡ M\H³¸*î&lt;1{ž»ä¹l²×ò*ReplaceWithó“8!Š}"u~zf¿Ô�èß÷4e^Ð‡r‘RgÖ_HŸÛZ9íÐšw8ò� &lt;0NKÀ³lWuž±�¸Èäü¼Õv�\zíI¨j@$»ô ¨È.ŠÔ°SÝóùYÍllÕv,îóÀâvh0£½��4Æ6?2&gt;öõzE±„—8&lt;]-@pÁ]²ö{t4;^·4dúÊm„yçMB~; jÝdœ�B&amp;ÉÜ&gt;q ¾û!0,)��£‚$0‚ 0Uefæåœyº2}^sÓ„Øƒ..Šs0U0€w,å×ürS––ÌÝ"[]P€&gt;é¾±0Uÿ0ÿ��0U ÿ00 +‚ž90?+3010/+0†http://xyz.xyz.com/etn/

Any pointers would be appreciated.
Thanks

only1masterbla1 · Answer

Looks like SSL check is failing during SSL reneg in phase2. By default SSL cache is maintained for an hour. I would have expected all SSL cert checks to occur within SSL event not under HTTP event. Please also check that oneconenct is enabled for VIP.

grabarz666 · Answer

Thanks,&nbsp;
We have event failure sometimes in intervals of 20 minutes... On oneconnect side, this is to send post re-negotiation subsequent HTTP request to the same server? I meant to add pool consist on member only as this is test bed.&nbsp;

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