What type of job involves working at client locations and the ability to work with little direct supervision?
a. field-based
b. project-based
c. office-based
d. home-based
A
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Use Telnet to connect to port 68. What happens? Explain.
Using Telnet to Test TCP Services a. In Part 1, nginx was found to be running and assigned to port 80 TCP. Although a quick Google search revealed that nginx is a lightweight web server, how would an analyst be sure of that? What if an attacker changed the name of a malware program to nginx, just to make it look like the popular web server? Use telnet to connect to the local host on port 80 TCP:
[analyst@secOps ~]$ telnet 127.0.0.1 80 Trying 127.0.0.1... Connected to 127.0.0.1. Escape character is '^]'.b. Press a few letters on the keyboard. Any key will work. After a few keys are pressed, press ENTER. Below is the full output, including the Telnet connection establishment and the random keys pressed (fdsafsdaf, this case):
fdsafsdaf HTTP/1.1 400 Bad Request Server: nginx/1.10.2 Date: Tue, 28 Feb 2017 20:09:37 GMT Content-Type: text/html Content-Length: 173 Connection: closeThanks to the Telnet protocol, a clear text TCP connection was established, by the Telnet client, directly to the nginx server, listening on 127.0.0.1 port 80 TCP. This connection allows us to send data directly to the server. Because nginx is a web server, it does not understand the sequence of random letters sent to it and returns an error in the format of a web page. While the server reported an error and terminated the connection, we were able to learn a lot. We learned that: 1) The nginx with PID 395 is in fact a web server. 2) The version of nginx is 1.10.2. 3) The network stack of our CyberOps Workstation VM is fully functional all the way to Layer 7. Not all services are equal. Some services are designed to accept unformatted data and will not terminate if garbage is entered via keyboard. Below is an example of such a service: c. Looking at the netstat output presented earlier, it is possible to see a process attached to port 22. Use Telnet to connect to it. Port 22 TCP is assigned to SSH service. SSH allows an administrator to connect to a remote computer securely. Below is the output:400 Bad Request 400 Bad Request
nginx/1.10.2 Connection closed by foreign host.
[analyst@secOps ~]$ telnet 127.0.0.1 22 Trying 127.0.0.1... Connected to 127.0.0.1. Escape character is '^]'. SSH-2.0-OpenSSH_7.4 sdfjlskj Protocol mismatch. Connection closed by foreign host.
A contact list lets you record information about people, such as their email address, phone number, birthday, physical address, and photo. _________________________
Answer the following statement true (T) or false (F)
All DOI numbers begin with ____ followed by a prefix of a unique combination of four or more digits, then a slash, and finally a suffix that is any alphanumeric combination that identifies the publisher.
A. ?3. B. ?6. C. ?9. D. ?10.
List at least five of the categories of clip art. Include in your response anything that you must consider as you prepare to use images from each category, as well as an explanation of what appropriate uses are for images in each category.
What will be an ideal response?