Secure Network Administrationintermediate
Arrange the steps of firewall policy evaluation in the correct chronological order for an incoming packet.
Answer
A network packet arrives at the firewall interface, The firewall evaluates policy rules sequentially from top to bottom, The packet matches the criteria of a specific rule, The firewall executes the action of the matching rule and stops further processing
Explanation
### The order
1. **Evaluate rules from top to bottom**: the firewall checks the policy list in sequence.
2. **Apply the action of the first matching rule**: a match determines whether the traffic is allowed or denied.
3. **Deny the traffic if no rule matches**: the implicit deny applies at the end of the policy.
### The concept
The order of policy rules matters because the firewall processes them sequentially. The implicit deny is not a rule that allows traffic by default; it is the final denial for unmatched traffic.
### Terms
- **Implicit deny**: The default denial applied when no policy rule matches.
### Remember
Check in order, apply the match, then deny anything left unmatched.
Related Questions
- Which statement best describes the protection a Virtual Private Network (VPN) provides?(basic)
- A VPN that encrypts traffic also guarantees that the applications on both endpoints are safe.(basic)
- Explain why a split-tunnel design can reduce central inspection, and identify the traffic affected.(advanced)
- Select ALL protection goals a VPN can support directly through the mechanisms described in the course.(intermediate)
- Compare remote-access and site-to-site VPN designs, including their endpoints and a suitable example of each.(basic)
Want to practice more questions like this?
Join myBenkio free and practice past questions for your Nigerian university courses with AI explanations for every answer.
Start Practicing Free