front 1 FTP port | back 1 TCP - 20 (Data) TCP - 21 (Control |
front 2 Telnet port | back 2 TCP - 23 |
front 3 SSH port | back 3 TCP - 22 |
front 4 SMPT port | back 4 TCP - 25 |
front 5 DNS port | back 5 TCP - 53 (zone transfers) UDP - 52 (queries) |
front 6 DHCP/BOOTP port | back 6 UDP - 67,68 |
front 7 HTTP port | back 7 TCP - 80 |
front 8 POP3 port | back 8 TCP - 110 |
front 9 IMAP4 port | back 9 TCP - 143 |
front 10 SNMP port | back 10 UDP - 161, 162 |
front 11 HTTPS port | back 11 TCP - 443 |
front 12 RDP port | back 12 TCP - 3389 |
front 13 LDAP port | back 13 TCP - 389 |
front 14 SMB/CIFS port | back 14 TCP - 3020 |
front 15 CIFS | back 15 Common Internet File System provides shared access to files, printers, etc |
front 16 FTP | back 16 File Transfer Protocol |
front 17 SMTP | back 17 Simple Mail Transfer Protocol |
front 18 DNS | back 18 Domain Name Service |
front 19 HTTP | back 19 Hypertext Transfer Protocol |
front 20 POP3 | back 20 Post Office Protocol version 3 |
front 21 IMAP | back 21 Internet Message Access Protocol |
front 22 HTTPS | back 22 Hypertext Transfer Protocol Secure |
front 23 RDP | back 23 Remote Desktop Protocol |
front 24 DHCP | back 24 Dynamic Host Configuration Protocol Automatic assignment of IP addresses |
front 25 LDAP | back 25 Lightweight Directory Access Protocol |
front 26 SNMP | back 26 Simple Network Management Protocol for managing devices across a network |
front 27 SMB | back 27 Server Message Block file and printer sharing for Windows |
front 28 SSH | back 28 Secure Shell a terminal session that is encrypted |
front 29 SFTP | back 29 Secure FTP over SSH file transfer that is encrypted |
front 30 FTP | back 30 File Transfer Protocol file transfer - UNencrypted |