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To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

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Port Numbers

Important Port Numbers

QuestionAnswer
Port 20 FTP Data Port
Port 21 FTP Control Port
Port 23 Telnet
Port 25 SMTP
Port 53 UDP DNS Name Queries
Port 53 TCP DNS Zone Transfers
Port 67 DHCP Client
Port 68 DHCP Server
Port 69 TFTP
Port 80 HTTP
Port 110 POP3
Port 135 RPC
Port 137 NetBIOS
Port 138 NetBIOS
Port 139 NetBIOS
Port 143 IMAP
Port 161 SNMP
Port 162 SNMP Trap
Port 389 LDAP
Port 443 HTTPS
Port 445 SMB
Port 636 LDAP TLS/SSL
Port 993 IMAP TLS/SSL
Port 1723 PPTP
Port 49 TACACS+
Port 500 IPsec
Port 1433 Microsoft SQL Server
Port 995 POP SSL/TLS
Port 123 NTP/SNTP - Network Time Protocol
Port 1701 L2TP
Port 22 SSH/SFTP/SCP
Port 88 Kerberos
Port 3389 RDP
Port 465 SMTPS
Port 1433 Microsoft SQL Server
Created by: Dks0512