Network Enumeration

Port/Protocol & Service Enumeration & Attack

Port 20,21 - File Transfer Protocol (FTP)

Port 22 - Secure Shell (SSH)

Port 23 - Telnet

Port 25 - Simple Mail Transfer Protocol (SMTP)

Port 53 - Domain Name System (DNS)

Port 67, 68 - Dynamic Host Configuration Protocol (DHCP)

Port 80, 8080 - Hyper Text Transfer Protocol (HTTP)

Port 443 - HTTP over SSL/TLS (HTTPS)

Port 110: Post Office Protocol Version 3 (POP3)

Port 123 - Network Time Protocol (NTP)

Port 88 - Kerberos

Port 137, 138, 139 - NetBIOS

Port 143 - Internet Message Access Protocol (IMAP)

Port 135 - Remote Procedure Call (RPC)

Port 194 - Internet Relay Chat (IRC)