HTTP Web pages use what port
Port 80
Point to point protocol (PPP) is for which technology
Dial-up
FTP port
20,21 port
Secure file transfer (SFTP)port
Port 22
Incoming email port (IMAP4)
Port 143
Incoming email port (POP3)
Port 110
Outgoing email port (SMPT)
Port 25
Terminal emulation port (Telnet)
Port 23
Encrypted terminal emulation (SSH) port
Port 22
Remote Desktop (RDP) port
Port 3389
Voice over IP (SIP) port
Port 5060
Secure web pages (HTTPS) port
TCP port 43
Allows the use of DNS naming (DNS) port
UDP port 53
Automatic IP addressing (DHCP) port
UDP port 67,68
Command to fix a failing DNS
ipconfig /flushdns