Joe, a security administrator, believes that a network breach has occurred in the datacenter as a
result of a misconfigured router access list, allowing outside access to an SSH server. Which of
the following should Joe search for in the log files?
A.
Failed authentication attempts
B.
Network ping sweeps
C.
Host port scans
D.
Connections to port 22
Explanation:
Log analysis is the art and science of reviewing audit trails, log files, or other forms of computergenerated records for evidence of policy violations, malicious events, downtimes, bottlenecks, or
other issues of concern.
SSH uses TCP port 22. All protocols encrypted by SSH also use TCP port 22, such as SFTP,
SHTTP, SCP, SExec, and slogin.