Ports Flashcards

Question

3389

Answer 1

RDP Remote Desktop Protocol • Share a desktop from a remote location over tcp/3389 • Remote Desktop Services on many Windows versions • Can connect to an entire desktop or just an application • Clients for Windows, macOS, Linux, Unix, iPhone, Android, and others

Answer 2

NETBIOS * Protocol used by Microsoft Windows * File sharing, printer sharing * Also called CIFS (Common Internet File System) * Using NetBIOS over TCP/IP * udp/137 - NetBIOS name services (nbname) * udp/138 - NetBIOS datagram service (nbdatagram) * tcp/139 - NetBIOS session service (nbsession)

Answer 3

SMB/CIFS CIFS Common Internet File System (CIFS) is a Microsoft-developed enhancement of the SMB protocol, which was also developed by Microsoft. The intent behind CIFS is that it can be used to share files and printers between computers, regardless of the operating system that they run. It’s been the default file and print sharing protocol on Windows-based computers since Windows 2000. SMB Server Message Block (SMB) is a protocol originally developed by IBM but then enhanced by Microsoft, IBM, Intel, and others. It’s used to provide shared access to files, printers, and other network resources and is primarily implemented by Microsoft systems. In a way, it can function a bit like FTP only with a few more options, such as the ability to connect to printers, and more management commands. It’s also known for its ability to make network resources easily visible through various Windows network apps (such as Network in File Explorer).

Answer 4

SLP The Service Location Protocol (SLP) is a non-proprietary protocol designed to help locate resources on a network. Without protocols such as SLP (and SMB), users wanting to access networked resources need to enter the hostname or IP address of the machine that provides the resource. SLP makes the resources visible and therefore easy to connect to. SLP was developed by the Internet Engineering Task Force (IETF), so it’s considered an industry standard. The advantage is that it can be used with non-Microsoft operating systems, such as macOS and Linux.

Answer 5

AFP ``` Apple Filing Protocol • File services in macOS • tcp/548 • Works with SLP (Service Location Protocol) • tcp/427 and udp/427 • Populates the list of available devices • File management • Copy, move, delete files ```

Answer 6

DHCP Dynamic Host Configuration Protocol • Automated configuration of IP address, subnet mask and other options • udp/67, udp/68 • Requires a DHCP server • Server, appliance, integrated into a SOHO router, etc. • Dynamic / pooled • IP addresses are assigned in real-time from a pool • Each system is given a lease and must renew at set intervals • DHCP reservation • Addresses are assigned by MAC address in the DHCP server • Quickly manage addresses from one location

Answer 7

LDAP Lightweight Directory Access Protocol • tcp/389 • Store and retrieve information in a network directory • Commonly used in Microsoft Active Directory

Answer 8

SNMP ``` Simple Network Management Protocol • Gather statistics from network devices • Queries: udp/161 • Traps: udp/162 • v1 – The original • Structured tables, in-the-clear • v2 – A good step ahead • Data type enhancements • Bulk transfers, still in-the-clear • v3 – A secure standard • Message integrity • Authentication, encryption ```

Answer 9

995 POP3 over a secure channel - TCP port 995.

Answer 10

POP3 over a secure channel - TCP port 995.

Answer 11

993 IMAP over secure socket layer encryption using TCP 993 to perform IMAPS communication.

Answer 12

IMAPS IMAP over secure socket layer encryption using TCP 993 to perform IMAPS communication.

Answer 13

authentication for SMTP is going to run over TCP port 587

Answer 14

587 authentication for SMTP is going to run over TCP port 587

Answer 15

Stands for Secure Multipurpose Internet Mail Extensions. This allows you to both encrypt and digitally sign the messages that you’re sending and receiving from Microsoft Exchange.

Answer 16

445 SMB/CIFS CIFS Common Internet File System (CIFS) is a Microsoft-developed enhancement of the SMB protocol, which was also developed by Microsoft. The intent behind CIFS is that it can be used to share files and printers between computers, regardless of the operating system that they run. It’s been the default file and print sharing protocol on Windows-based computers since Windows 2000. SMB Server Message Block (SMB) is a protocol originally developed by IBM but then enhanced by Microsoft, IBM, Intel, and others. It’s used to provide shared access to files, printers, and other network resources and is primarily implemented by Microsoft systems. In a way, it can function a bit like FTP only with a few more options, such as the ability to connect to printers, and more management commands. It’s also known for its ability to make network resources easily visible through various Windows network apps (such as Network in File Explorer).