A technician wants to secure a sensitive workstation by ensuring network traffic is kept within the local subnet.
To accomplish this task, the technician executes the following command: echo 0 > /proc/sys/net/ipv4/ip_default_ttl Which of the following commands can the technician use to confirm the expected results? (Choose two.)
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A. B. C. D. E. F.CF.
The command echo 0 > /proc/sys/net/ipv4/ip_default_ttl sets the time-to-live (TTL) value of outgoing packets to 0, which means that the packets will not be forwarded beyond the local subnet. This helps to ensure that network traffic stays within the local network and does not leak out to other networks.
To confirm the expected results, the technician can use the following commands:
tcpdump: This command can be used to capture and analyze network traffic. By running tcpdump on the sensitive workstation, the technician can check if any packets are leaving the local subnet. If the TTL value has been set to 0, then the packets should not leave the local subnet, and tcpdump should not capture any outgoing packets.
traceroute: This command can be used to trace the path that packets take to reach a destination. By running traceroute on the sensitive workstation and specifying a destination outside the local subnet, the technician can check if the packets are being forwarded beyond the local subnet. If the TTL value has been set to 0, then the packets should not be able to leave the local subnet, and traceroute should not show any hops beyond the local subnet.
Therefore, the correct answers are A. tcpdump and B. traceroute.