Sec Plus 401 Ports
One of the most overlooked protocols is NTP. NTP is used to synchronize the devices on the Internet.
Network Time Protocol (NTP) UDP On Port 123
Which of the ports listed below are used by client applications designed to retrieve email messages from mail servers? (Select 2 answers)
Port 110 POP3, Port 25 SMTP
Which of the following ports are used by NetBIOS? (Select all that apply)
Port 137, 138,139
Port used for Internet Message Access Protocol (IMAP)
Port 143
An SNMP Agent receives requests on UDP port:
Port 161
An SNMP management station receives SNMP notifications on UDP port:
Port 162
File Transfer Protocol (FTP) runs by default on port(s): (Select all that apply)
Port 20, 21
Secure Copy (SCP) runs on port:
Port 22
A network administrator has been asked to establish secure network link for exchanging files between two remote hosts. Which of the following ports should be in use to enable this type of network connection?
Port 22 (SSH, SFTP, SCP)
A network administrator wants to replace service running on port 23 with a more reliable solution. Which of the following ports would be in use after implementing this change?
Port 22 gives SSH, SFTP, SCP more secure to Port 23 TCP UDP. telnet. Telnet.
Telnet protocol—unencrypted text communications
Port 23
A hacker has captured network traffic with cleartext commands sent from the client to the server console. Which of the following ports is being used by the network admin for the client-server communication?
Port 23 TCP UDP. telnet. Telnet. This is open text so could be captured.
Which of the following default port numbers is not used by a remote administration tool?
Port 25
Port used for Time Protocol
Port 37
What port is used for Lightweight Directory Access Protocol (LDAP)?
Port 389
A network administrator has been asked to set up a VPN link on a connecting host with no dedicated VPN client application installed. Which of the following ports should be in use to enable this type of connection?
Port 443 is HTTPS or secured
Which of the ports listed below is used by TACACS+?
Port 49 and it is TCP protocol. TACACS+ Login Host protocol
What port is used for Domain Name System services
Port 53, UDP
A network administrator wants to secure the existing access to a directory service with SSL/TLS encryption. Which of the following ports would be in use after implementing this change?
Port 636- Lightweight Directory Access Protocol (LDAPS) over TLS/SSL
Which of the port numbers listed below is used by the Trivial File Transfer Protocol (TFTP)?
Port 69 is TFTP
Which of the answers listed below refers to a port number for a lightweight protocol typically used for transferring boot files and configuration files between hosts in a secure Intranet environment?
Port 69- Trivial File Transfer Protocol
Which port is used for Kerberos authentication system
Port 88
Port used for Post Office Protocol 3 (POP3) over TLS/SSL
Port 995
POP version 3 is one of the two main protocols used to retrieve mail from a server. POP was designed to be very simple by allowing a client to retrieve the complete contents of a server mailbox
Post Office Protocol (POP) version 3 TCP On Port 110
3389 is the default port number for:
Remote Desktop Protocol (RDP)
Port used for determining the location of higher level services from hosts on a network
Resource Location Protocol (RLP) on Port 39
Unblocking port number 22 enables what type of traffic? (Select all that apply)
SSH, SFTP, SCP
Telnet is the primary method used to manage network devices at the command level. Unlike SSH which provides a secure connection, Telnet does not, it simply provides a basic unsecured connection.
Telnet TCP on Port 23
TFTP offers a method of file transfer without the session establishment requirements that FTP uses. Because TFTP uses UDP instead of TCP it has no way of ensuring the file has been properly transferred,
Trivial File Transfer Protocol (TFTP) UDP On Port 69
NetBIOS itself is not a protocol but is typically used in combination with IP with the NetBIOS over TCP/IP (NBT) protocol. NBT has long been the central protocol used to interconnect Microsoft Windows machines.
NetBIOS TCP/UDP On Ports 137 and 138 and 139
FTPS is an extension to the Secure Shell protocol (SSH) and runs by default on port number 22.
False- FTPS runs 990 and sometimes port 21.
The NetBIOS session service runs by default on UDP port 139.
False- Netbios is 139 but a TCP
DHCP is used on networks that do not use static IP address assignment (almost all of them). A DHCP server can be set up by an administrator or engineer with a poll of addresses that are available for assignment.
Dynamic Host Configuration Protocol (DHCP) UDP on Port 67 and 68
LDAP provides a mechanism of accessing and maintaining distributed directory information. LDAP is based on the ITU-T X.500 standard but has been simplified and altered to work over TCP/IP networks.
Lightweight Directory Access Protocol (LDAP) TCP and UDP On Port 389
Just like HTTPS, LDAPS provides the same function as LDAP but over a secure connection which is provided by either SSL or TLS.
Lightweight Directory Access Protocol over TLS/SSL (LDAPS) TCP and UDP On Port 636
FTP is one of the most commonly used file transfer protocols on the Internet and within private networks. An FTP server can easily be set up with little networking knowledge and provides the ability to easily relocate files from one system to another.
File Transfer Protocol (FTP) TCP on Port 20 and 21
HTTP is one of the most commonly used protocols on most networks. HTTP is the main protocol that is used by web browsers
Hypertext Transfer Protocol (HTTP) TCP On Port 80
HTTPS is used in conjunction with HTTP to provide the same services but doing it using a secure connection which is provided by either SSL or TLS.
Hypertext Transfer Protocol over SSL/TLS (HTTPS) TCP On port 443
TCP port 143 is used by:
IMAP- Internet Message Access Protocol
IMAP version3 is the second of the main protocols used to retrieve mail from a server. While POP has wider support, IMAP supports a wider array of remote mailbox operations which can be helpful to users.
Internet Message Access Protocol (IMAP) TCP On Port 143
A technician uses an RDP client on their Windows OS in order to remotely troubleshoot a problem on another Windows machine. Which of the following ports needs to be opened for the built-in Windows RDP server to allow this type of network connection?
3389
BGP version 4 is widely used on the public internet and by Internet Service Providers (ISP) to maintain very large routing tables and traffic processing. BGP is one of the few protocols that have been designed to deal with the astronomically large routing tables that must exist on the public Internet.
Border Gateway Protocol (BGP) TCP On port 179
FTP is one of the most commonly used file transfer protocols on the Internet and within private networks. An FTP server can easily be set up with little networking knowledge and provides the ability to easily relocate files from one system to another.
FTP control is handled on TCP port 21 and its data transfer can use TCP port 20 as well as dynamic ports depending on the specific configuration.
Again, just like the previous two entries, FTP over TLS/SSL uses the FTP protocol which is then secured using either SSL or TLS.
FTP over TLS/SSL TCP On Port 989 and 990
Network traffic on port 389 indicates existence of an active:
Directory Service (389 think Directory)
The DNS is used widely on the public internet and on private networks to translate domain names into IP addresses, typically for network routing.
Domain Name System (DNS) is on TCP/UDP- Port 53
SSH is the primary method used to manage network devices securely at the command level. It is typically used as a secure alternative to Telnet which does not support secure connections.
Secure Shell (SSH) TCP on Port 22
SMTP is used for two primary functions, it is used to transfer mail (email) from source to destination between mail servers and it is used by end users to send email to a mail system.
Simple Mail Transfer Protocol (SMTP) TCP on Port 25
SNMP is used by network administrators as a method of network management. SNMP has a number of different abilities including the ability to monitor, configure and control network devices. SNMP traps can also be configured on network devices to notify a central server when specific actions are occurring.
Simple Network Management Protocol (SNMP) TCP and UDP On Ports 161 and 162
