cookie encryption using Http profile and irule

Hi,

Tried cookie encryption using the irule and http profile. However, When ran a vulnerability scanner from the internet the cookie is leaking internal Ips etc. Not sure what am is missing? Please help.

ltm rule cookie_domain { partition test-dmz when HTTP_REQUEST { set domainname [HTTP::host] } }

ltm rule cookie_secure { partition test-dmz when HTTP_RESPONSE { foreach aCookie [HTTP::cookie names] { HTTP::cookie secure $aCookie enable } } }

ltm persistence cookie Com_cookie { app-service none defaults-from cookie expiration 0 }

create ltm profile http http-cookieencrypt defaults-from http encrypt-cookies add { Com_cookie } encrypt-cookie-secret "Password01"

ltm profile http http-cookieencrypt { app-service none defaults-from http encrypt-cookie-secret Password01 encrypt-cookies { Com_cookie } }