Option D is the correct answer because it specifically blocks access to the website “www.eicar.org” using TCP protocol and HTTP service, which are commonly used for web browsing. The other options either use the wrong protocol (UDP), the wrong service (DNS or SSL), or the wrong pattern (“eicar” instead of “www.eicar.org”). References := Configuring custom signatures | FortiGate / FortiOS 7.4.0 - Fortinet Document Library, section “Signature to block access to example.com”.
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