F5 irule to Protect Clickjacking Attack using X-FRAME-OPTIONS

Secure Clickjacking Attack with X-Frame-Options using F5 iRule

There are multiple ways to add X-Frame-Options header in your web applications.

However, implementing through F5 load balancer is probably the easiest one.

By doing at a network edge using F5 iRule give you the advantage of making changes no fly.

That’s right; you don’t need to restart any services hence no downtime.

There are three settings for X-Frame-Options:

1. SAMEORIGIN: This configuration will allow the page to be displayed in a frame on the same origin as the page itself.
2. DENY: This setting will prevent a page displaying in a frame or iframe.
3. ALLOW-FROM uri: allow resources to load only on specified origin.

To implement in F5 irule

• Create irule with following

when HTTP_RESPONSE {
HTTP::header insert "X-FRAME-OPTIONS" "SAMEORIGIN"
}

• Associate this irule to respective Virtual server

To verify

Use browser’s inbuilt developer tools to examine the response headers or online using HTTP Header checker tool.

You see it’s three line which does the job! Learn more about iRule here.