Port/Protocol & Service Enumeration & Attack
File Transfer Protocol (FTP): 20, 21Secure Shell (SSH): 22Telnet: 23Simple Mail Transfer Protocol (SMTP): 25Domain Name System (DNS):53Dynamic Host Configuration Protocol (DHCP): 67, 68Hyper Text Transfer Protocol (HTTP): 80Kerberos: 88Post Office Protocol version 3 (POP3): 110Network Time Protocol (NTP): 123Remote Procedure Call (RPC): 135NetBIOS: 137, 138, 139Internet Message Access Protocol (IMAP): 143IMAP over SSL/TLS: 933Internet Relay Chat (IRC): 194Light Weight Directory Access Protocol (LDAP): 389Server Message Block (SMB): 445Network File System (NFS): 2049Microsoft SQL Server: 1433MySQL Server: 3306PostgreSQL Server: 5432Remote Desktop Protocol (RDP): 3389Border Gateway Protocol (BGP): 179Remote Authentication Dial-In User Service (RADIUS): 1812, 1813