Access control is often implemented through the use of MAC address filtering on wireless Access Points. Why is this considered to be a very limited security measure?
Clive is conducting a pen-test and has just port scanned a system on the network. He has identified the operating system as Linux and been able to elicit responses from ports 23, 25 and 53. He infers port 23 as running Telnet service, port 25 as running SMTP service and port 53 as running DNS service. The client confirms these findings and attests to the current availability of the services. When he tries to telnet to port 23 or 25, he gets a blank screen in response. On typing other commands, he sees only blank spaces or underscores symbols on the screen. What are you most likely to infer from this?
Neil is closely monitoring his firewall rules and logs on a regular basis. Some of the users have complained to Neil that there are a few employees who are visiting offensive web site during work hours, without any consideration for others. Neil knows that he has an up-to-date content filtering system and such access should not be authorized. What type of technique might be used by these offenders to access the Internet without restriction?
Bill is attempting a series of SQL queries in order to map out the tables within the database that he is trying to exploit.
Choose the attack type from the choices given below.
Study the following exploit code taken from a Linux machine and answer the questions below:
echo “ingreslock stream tcp nowait root /bin/sh sh –I" > /tmp/x;
/usr/sbin/inetd –s /tmp/x;
sleep 10;
/bin/ rm –f /tmp/x AAAA…AAA
In the above exploit code, the command “/bin/sh sh –I" is given.
What is the purpose, and why is ‘sh’ shown twice?
Steven the hacker realizes the network administrator of Acme Corporation is using syskey in Windows 2008 Server to protect his resources in the organization. Syskey independently encrypts the hashes so that physical access to the server, tapes, or ERDs is only first step to cracking the passwords. Steven must break through the encryption used by syskey before he can attempt to use brute force dictionary attacks on the hashes. Steven runs a program called "SysCracker" targeting the Windows 2008 Server machine in attempting to crack the hash used by Syskey. He needs to configure the encryption level before he can launch the attack. How many bits does Syskey use for encryption?
In what stage of Virus life does a stealth virus gets activated with the user performing certain actions such as running an infected program?
Jimmy, an attacker, knows that he can take advantage of poorly designed input validation routines to create or alter SQL commands to gain access to private data or execute commands in the database. What technique does Jimmy use to compromise a database?
TESTED 31 Jan 2025
