A security analyst is trying to identify anomalies on the network routing. Which of the following functions can the analyst use on a shell script to achieve the objective most accurately?
A security analyst is trying to identify anomalies on the network routing. Which of the following functions can the analyst use on a shell script to achieve the objective most accurately?
To identify anomalies on the network routing accurately, the security analyst should use a function that traces the path packets take to reach a destination, revealing detailed information about each hop. The most suitable function for this purpose is based on the 'traceroute' command. This command displays the route packets take, including each hop along the way, which allows for the identification of unexpected routes, increased latencies, and other routing issues. Therefore, using traceroute with a maximum hop count and extracting the last hop reached provides valuable insights into the routing path and helps in identifying any anomalies.
To identify anomalies on the network routing accurately, the security analyst should use a function that can help in gathering information related to the network routing of a given IP address. Among the provided options, the most suitable function for this purpose is: D. function x() { info=$(traceroute -m 40 $1 | awk 'END{print $1}') && echo "$1 | $info" } Explanation: This function uses the "traceroute" command with a maximum hop count of 40 to trace the route to the target IP address. The "awk 'END{print $1}'" command is used to extract the last hop or router in the route, which can be valuable for identifying anomalies or unexpected routing paths. Finally, it echoes the target IP address and the last hop/router in the route as output, which can help the analyst identify any unexpected or suspicious routing behavior.
This function performs a reverse DNS lookup (dig -x $1) on the IP address $1 to get the corresponding domain name. It then extracts the Autonomous System Number (ASN) information from the result using awk and queries the ASN information from the origin.asn.cymru.com service. This can help identify anomalies in network routing by associating IP addresses with their corresponding ASN, providing insights into the routing path and potential routing issues.
D. function x() { info=$(traceroute -m 40 $1 | awk 'END{print $1}') && echo "$1 | $info" } This shell function uses traceroute to trace the route packets take to reach the destination specified by $1. The -m 40 option specifies a maximum of 40 hops for the trace. The awk 'END{print $1}' part extracts the final hop from the traceroute output, and then the function echoes the destination and the info.
network anomalies. I'd start with a traceroute to see the nodes my connection runs through. I do this when customer's are having non-equipment related problems, related to internet connection. All ISPs are interconnected and if they lose a node, traffic may be re-routed, which can increase latency.
Option C captures ASN info, D monitors the routes.
Among the provided options, option D (traceroute) is the most suitable for identifying anomalies on the network routing. Traceroute provides detailed information about each hop packets take to reach the destination, allowing the analyst to detect any unusual routing paths or issues.
This function executes a traceroute to the specified IP address and extracts the last hop reached. Traceroute can reveal the network path taken by packets, helping to identify routing anomalies such as unexpected hops or routing loops. Among the options provided, option D (traceroute) is the most relevant for identifying anomalies on the network routing.
D: Uses traceroute to display the route packets take to reach a network host. For identifying anomalies in network routing, the function that would be most relevant is: D. function x() { info=$(traceroute -m 40 $1 | awk ‘END{print $1}’) && echo "$1 | $info" } traceroute shows the path that packets take to get from the source machine to the destination. This can help identify if there are unexpected or inefficient routes, timeouts, or other anomalies that might indicate a routing issue. The other functions gather useful data but are not as directly applicable to identifying routing anomalies.