Router and Firewall Protocols

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Q: You need to find out which protocols a router or firewall blocks as well as which protocols a router or firewall will simply pass onto downstream hosts.

You are going to map out any intermediate routers or hops between a scanning host and your target host. After viewing the results, you need to identify which ports are open. The tool displays “A!” when it determines that the metric host is directly behind the target gateway. Which tool are you using for the scan?

a. Firewalk


c. HPing

d. Traceroute

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