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An internal host at IP address 10.10.50.100 is suspected to be communicating with a command and control whenever a user launches browser window. What features and settings of Wireshark should be used to isolate and analyze this network traffic?
What feature of Wireshark allows the analysis of one HTTP conversation?
Follow TCP Stream is a feature of Wireshark that allows the analysis of a single TCP conversation between two hosts over multiple packets. Filtering packets using tcp in the filter box will return all TCP packets, not grouping by a single TCP conversation. HTTP is TCP not UDP, so you cannot follow a HTTP stream over UDP.
A compromised router is reconfigured by an attacker to redirect SMTP email traffic to the attacker's server before sending packets on to their intended destinations. Which IP header value would help expose anomalies in the path outbound SMTP/Port 25 traffic takes compared to outbound packets sent to other ports?
In a case study of a redirect tunnel set up on a router, some anomalies were noticed while watching network traffic with the TCPdump packet sniffer.
Packets going to port 25 (Simple Mail Transfer Protocol [SMTP] used by mail servers and other Mail Transfer Agents [MTAs] to send and receive e-mail) were apparently taking a different network path. The TLs were consistently three less than other destination ports, indicating another three network hops were taken.
Other IP header values listed, such as fragment offset. The acknowledgement number is a TCP, not IP, header field.
On which layer of the OSI Reference Model does the FWSnort utility function?
The FWSnort utility functions as a transport layer inline IPS.
An incident response team investigated a database breach, and determined it was likely the result of an internal user who had a default password in place. The password was changed. A week later, they discover another loss of database records. The database admin provides logs that indicate the attack came from the front-end web interface. Where did the incident response team fail?
