Forum Discussion
Douglas_Wong_10
Nimbostratus
NimbostratusDisablling SSL v2 to users with iRules
I'm looking at capturing users who use an older browser which negotiates with SSL v.2 and redirecting them to a page that basically tells them to upgrade.
My questions are these:
1) Can I use SSL::cipher version to determine if the user is using version 2, then redirecting them to this friendly page or should I use another SSL irule?
2) Do I need to terminate SSL on the LTM for this to work or can termination be done at the web server level?
Thanks...
Douglas_Wong_10Thanks for your reply Hoolio.
It sounds like I'll need to terminate SSL on BigIP, rather than installing the certificate on my Web Server directly for the SSL:: irules to work. Does that sound right to you?- hoolio
Cirrostratus
It looks like that is correct. I think the logic is: if you're just passing the SSL traffic through the BIG-IP, BIG-IP never sees the SSL handshake--and therefore you can't access the SSL cert info or use SSL-based iRule commands. I'm not sure whether the client SSL cipher version info is snoop-able in between the client and the server, but I'm pretty sure BIG-IP isn't looking for it (if it is visible) anyhow.
Regardless, you need to decrypt the HTTPS traffic in order to send an HTTP redirect back to the client.
Aaron