Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
remaining cards
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.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

A+ ports

port numbers

21 (FTP server) listens for commands from FTP client
22 (SSH Server) listens
23 (Telenet server) listens
53 (DNS Server) listens
67 (DHCP server) listens
68 (DHCP Client) receives
80 (Web server using HTTP) receiving HTTP requests
443 (Web server using HTTPS) receiving HTTPS transmitions
25 (SMTP email server) receive email from email client
110 (POP3 email server) listens
143 (IMAP email server) requests
137-139 (SMB over NetBIOS) 137&138=SMB over UDP. 137&139 = SMB over TCP
NETBIOS legacy suite of protocols used by windows before TCP/IP
445 (SMB direct over TCP/IP) SMB3&2 for TCP/UDP
161 (SNMP agent) receives requests
162 (SNMP manager) listens
389 (LDAP) listens for LDAP communication
427 (SLP and AFP) find printers , file sharing devices, resources on local network.
548 (AFP) file sharing and file servers
3389 (RDP apps, including remote desktop and remote Assistance) listen
Created by: kirkpatricktj