Network Ports Flashcards
20-21
FTP (TCP)
File Transfer Protocol
client/server file transfer (unsecured)
22
SSH (TCP)
Secure Shell
command line remote access (secured)
22
SFTP (TCP)
Secure File Transfer Protocol
client/server file transfer (secured)
23
Telnet (TCP) DO NOT USE
command line remote access (unsecured)
25
SMTP (TCP)
Simple Mail Transfer Protocol
Sending email (unsecured)
53
DNS (UDP)
Domain Name System
Converts domain names to ip addresses and vice versa
67
DHCP Server (UDP)
Dynamic Host Control Protocol
Automatically provides network connection parameters to your clients, such as assigning IP addresses, subnet masks, default gateway, and pointing to the DNS server
68
DHCP Client (UDP)
Dynamic Host Control Protocol
Automatically provides network connection parameters to your clients, such as assigning IP addresses, subnet masks, default gateway, and pointing to the DNS server
80
HTTP (TCP)
Hypertext Transfer Protocol
web browsing (unsecured)
110
POP/POP3 (TCP)
Post Office Protocol
Download mail from server (incoming only)
123
NTP (UDP)
Network Time Protocol
Keeps accurate time on a network
137-139
NetBIOS (WIndows)
Network Basic Input/Output System
Provides file and printer sharing for Windows
143
IMAP (TCP)
Internet Mail Application Protocol
Newer version of Email retrieval
Allows the client to view and manipulate emails locally as though they were directly accessing the server (synchronization between clients accessing the same account)
161
SNMP Queries (UDP)
Simple Network Management Protocol
Used to collect data about. network devices and monitor their status
162
SNMP Traps (UDP)
Simple Network Management Protocol
Used to collect data about. network devices and monitor their status
389
LDAP (TCP/UDP)
Lightweight Directory Access Protocol
Windows Active Directory
Used to provide directory services to your network (enterprise address book, including email address, group assignment, contact info, etc)
443
HTTPS (TCP)
Hypertext Transfer Protocol Secure
Web browsing (secure)
445
SMB (TCP)
Server Message Block
shared drives
514
Syslog (UDP)
System Logging Protocol
Sends logging data back to a centralized location
587
SMTP TLS Client-to-Server (TCP)
Simple Mail Transfer Protocol Transport Layer Security
Sending email (secured)
636
LDAPS (TCP/UDP)
Lightweight Directory Access Protocol Secure
Windows Active Directory
Used to provide directory services to your network (enterprise address book, including email address, group assignment, contact info, etc)
993
IMAPS (TCP)
Internet Mail Application Protocol Secure
995
POPS/POPS3 (TCP)
Post Office Protocol Secure
Download mail from server (incoming only)
1433
SQL
Structured Query Language Server Protocol
Communication from client to a Microsoft server database engine
1521
SQLnet
Structured Query Language Network Protocol
Communication from client to an Oracle database engine
3306
MySQL
Structured Query Language Protocol for MySQL (open source)
Communication from client to a MySQL database engine
3389
RDP
Remote Desktop Protocol
Full GUI remote desktop access to a client or server (Microsoft)
5060
SIP (UDP, TCP, SCTP)
Session Initiation Protocol
Initiate VOIP and video calls
5061
SIP (TLS)
Session Initiation Protocol
Initiate VOIP and video calls
5900
VNC
Virtual Network Computing
Full GUI remote desktop access to a client or server (Apple)
27015-27050
Steam/Valve
32400
Plex
