Cookie

[mika]

Hello,

There are cokies to know which backend server we are on with big ip v 14 ?

Best regards,

[Dario_Garrido]

Hello Mika.

If you use cookie persistence, you can force a specific node for being selected in the loadbalancing method.

REF - https://support.f5.com/csp/article/K6917

Regards,

Dario.

[mika]

Thanq u for your anser 🙂 but me i want return the ip of node not encrypt, this just for same ip for the devlopper and the project manager for theirs tests the load balancing.

This fonctionnality of the cookie persistence it's the vulnérabily for systeme big ip https://www.nooby.fr/hacking-f5-persistence-cookie/.

Regards,

[Dario_Garrido · Accepted solution]

Hello Mika.

You can use an iRule to inject a HTTP header with this info.

when SERVER_CONNECTED { set node [IP::remote_addr] }   when HTTP_RESPONSE { HTTP::header insert {LB-SERVER} $node }# curl -v http://10.130.4.50 -o /dev/null ...[Omitted] HTTP/1.1 200 OK < Date: Tue, 18 Aug 2020 08:18:42 GMT < Server: Apache/2.2.15 (CentOS) < X-Powered-By: PHP/5.3.3 < Content-Length: 7677 < Connection: close < Content-Type: text/html; charset=UTF-8 < LB-SERVER: 172.16.1.2

Regards,

Dario.

[mika]

thank you for your help 🙂

[Dario_Garrido]

Please, if my answer was helpful, not forget to tag it as 'the best' ;-).

[mika]

OK with pleasure 🙂