Port numbers you need to know for N10-008

 Network+ Port Numbers

This is a list of the port numbers and their associated protocols that you need to know for the exam:

20 TCP - FTP (File Transfer Protocol) - Data

21 TCP - FTP (File Transfer Protocol) - Control

22 TCP - SSH (Secure Shell), SCP (Secure Copy Protocol), SFTP (Secure File Transfer Protocol)

25 TCP - SMTP (Simple Mail Transfer Protocol) sends/relay email in plaintext

53 TCP/UDP - DNS (Domain Name System) Uses UDP for DNS queries, uses TCP for DNS zone transfers

67 UDP - DHCP (Dynamic Host Configuration Protocol) Server

68 UDP - DHCP (Dynamic Host Configuration Protocol) Client

69 UDP - TFTP (Trivial File Transfer Protocol) transfers files in plaintext

80 TCP - HTTP (Hypertext Transfer Protocol) Plaintext

110 TCP - POP (Post Office Protocol) Retrieve email in plaintext, email is no longer on the server

123 UDP - NTP (Network Time Protocol)

143 TCP - IMAP (Internet Message Access Protocol) Retrieve email in plaintext

161 UDP - SNMP (Simple Network Management Protocol)

162 UDP - SNMP (Simple Network Management Protocol - trap)

389 TCP - LDAP (Lightweight Directory Access Protocol) Plaintext

443 TCP - HTTPS (HTTP-Secure)

445 TCP - SMB (Server Message Block) File sharing

514 UDP - Syslog

554 TCP - RTSP (Real Time Streaming Protocol

587 TCP - SMTPS (SMTP - Secure)

636 TCP - LDAPS (LDAP - Secure)

993 TCP - IMAPS (IMAP - Secure)

995 TCP - POPS (POP - Secure)

1433 TCP - SQL (Microsft SQL server)

3306 TCP - MYSQL (Linux Database)

3389 TCP - RDP (Remote Desktop Protocol)

5060 TCP/UDP - SIP (Session Initiation Protocol) VoIP credentials

5061 TCP/UDP - SIPS (SIP -Secure)

SYSLOG Severity Level

 SYSLOG

CODE            LEVEL            DESCRIPTION

0                    Emergency        The system is unusable (kernel panic)

1                    Alert                   A fault requiring immediate                                                                          remediation has occurred

2                    Critical               A fault that will require immediate                                                                remediation is likely to develop

3                    Error                  A non-urgent fault has developed

4                    Warning             A non-urgent fault is likely to develop

5                    Notice                A state that could lead to an error                                                              condition has developed

6                    Informational     A normal but reportable event has                                                              occurred

7                     Debug              Verbose status conditions used during                                                        development and testing

Levels 0 through 4 are normally logged. Levels 5 through 7 are normally used during troubleshooting or testing.