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Ports
| Question | Answer |
|---|---|
| What port should be open in order for users to identify websites by domain name? | UDP 53 |
| What has a default port of 22? | SSH (Secure Shell) |
| A security administrator wants to secure remote telnet services and decides to use services over SSH. What port should be allowed on the firewall by default? | Port 22 |
| Which port would be blocked if a security administrator wants to deny access to websites? | Port 80 |
| What two protocols does HTTP/S use for connection security, and what TCP port does it operate on by default? | HTTP/S uses SSL (Secure Sockets Layer) or TLS (Transport Layer Security) and port 443. |
| What is the IEEE standard for port-based access control? | 802.1X |
| What is the port number for Simple Mail Transport Protocol (SMTP)? | 25 |
| What is the port number for Trivial File Transfer Protocol (TFTP)? | 69 |
| What is the port number for Post Office Protocol 3 (POP3)? | 110 |
| What are the port numbers for FTP? | 20 and 21 |
| What is the port number for Telnet? | 23 |
| What port does PPTP use? | TCP 1723 |
| What port does L2TP use? | UDP 1701 |
| What port would be blocked if a security administrator wants to disable FTP? | Port 21 |
| A security administrator needs to Telnet into a router to change some configurations. What port would need to be open to allow them to change the configurations? | Port 23 |
| You are configuring a network firewall to allow SMTP outbound email traffic, and PO3 inbound email traffic. What TCP/IP ports should you open on the firewall? 2 answers | 25 and 110 |
| What port is used by SNMP? | 161 |
| You want to close all ports associated with NetBIOS on your network firewalls to prevent attacks directed against NetBIOS. What ports should you close? | 135, 137-139 |
| What protocol uses port 443? | HTTPS |
| What ports does FTP use to establish sessions and manage traffic? | 20,21 |
| Your network uses an FTP server for file transfers. You want to secure logon credentials used with FTP so they are not passed in cleartext. What should you do? | Add SSL to port 21. 21 is for logon/control info and 20 is for transfer. |
| What port is used by SNMP? | 161 |
| What protocol uses port 636 and 389? | LDAP |
| What protocol uses port 88? | Kerberos |
| What port(s) are used with TACACS? | port 49 |
Created by:
Ldc001
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