CompTIA Sec+ Ports and Commands.
Updated Fall 2024/2025.
Port 20/21
FTP (File Transfer Protocol)
Port 22
SSH (Secure Shell)
Port 23
Telnet
Port 3389
RDP (Remote Desktop Protocol)
Port 137/138/139
NetBIOS
Port 53
DNS (Domain Name System)
Port 25
SMTP (Simple Mail Transfer Protocol)
Port 110
POP3 (Post Office Protocol)
Port 143
IMAP (Internet Message Access Protocol)
Port 80
HTTP (Hypertext Transfer Protocol)
Port 443
HTTPS (Hyper Text Transfer Protocol Secure)
Port 123
NTP (Network Time Protocol)
Port 135/445
, Windows File Sharing
Port 161/162
SNMP (Simple Network Management Protocol)
Port 1433/1434
SQL Server
Port 1521
oracle
Port 1720
H.323
Port 1723
PPTP (Point-to-Point Tunneling Protocol)
Port 9100
HP JetDirect Printing
Ping
checks whether a remote system is responding
----> ICMP Echo Request ---->
<----- ICMP Echo Reply <-----
hping
creates customized ping requests
-older tool
traceroute
determines network path b/t two systems
tracert
determines network path b/t two systems on Windows sytstems
pathping
Windows command combining ping an tracert functionality
dig
performs DNS lookups on Mac and Linux systems
nslookup
performs DNS lookups on Windows systems
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