Network protocols
This protocol is used for secure terminal communication and operates on TCP port 22.
What is SSH (Secure Shell)?
This secure file transfer protocol communicates over TCP port 22.
What is SFTP (Secure File Transfer Protocol)?
This server-to-server communication protocol is used to send emails over the internet and typically uses TCP port 25.
What is SMTP (Simple Mail Transfer Protocol)?
This protocol is used for non-encrypted web communications and operates on TCP port 80.
What is HTTP (Hypertext Transfer Protocol)?
This protocol is responsible for assigning IP addresses and other network configurations and uses UDP ports 67 and 68.
What is DHCP (Dynamic Host Configuration Protocol)?
This protocol is used for converting domain names to IP addresses and typically uses UDP port 53.
What is DNS (Domain Name System)?
This older file transfer protocol uses two different ports, TCP 20 for active mode data and TCP 21 for control.
What is FTP (File Transfer Protocol)?
This protocol is used to receive emails and communicates over TCP port 110 for plaintext and TCP port 995 for encrypted TLS.
What is POP3 (Post Office Protocol version 3)?
This protocol is used for secure web communications and operates on TCP port 443.
What is HTTPS (Hypertext Transfer Protocol Secure)?
This standard protocol is used for sending device logs to a central repository and operates on UDP port 514.
What is syslog?
This is a signaling protocol used in VoIP communications, operating on TCP ports 5060 and 5061.
What is SIP (Session Initiation Protocol)?
This protocol is a simplified method of transferring files using UDP port 69.
What is TFTP (Trivial File Transfer Protocol)?
This email protocol provides more options for managing mail and operates on TCP port 143 for plaintext.
What is IMAP4 (Internet Message Access Protocol version 4)?
This protocol is used for remote desktop viewing in Windows environments and operates on TCP port 3389.
What is RDP (Remote Desktop Protocol)?
This protocol is used for setting up phone calls, tearing them down, and setting parameters during use, using TCP ports 5060 and 5061.
What is SIP (Session Initiation Protocol)?
This protocol is responsible for managing and sending statistics from devices and uses UDP port 161.
What is SNMP (Simple Network Management Protocol)?
This protocol is used for file transfer and printing in Windows environments and operates on TCP port 445.
What is SMB (Server Message Block)?
This secure version of SMTP uses TCP port 587 for encrypted communication.
What is SMTPS or SMTP over TLS?
This lightweight directory access protocol is commonly used for managing centralized databases and operates on TCP port 389.
What is LDAP?
This secure form of LDAP communicates over TCP port 636.
What is LDAPS (LDAP Secure)?
This protocol provides the ability to synchronize device clocks across the network and uses UDP port 123.
What is NTP (Network Time Protocol)?
This protocol is commonly used for database access and operates on TCP port 3306.
What is MySQL?
This protocol uses TCP port 993 for encrypted email retrieval.
What is IMAPS or IMAP over TLS?
This protocol is commonly used for centralized database access and operates on TCP port 1433.
What is Microsoft SQL Server?
This protocol is used for Oracle databases and operates on TCP port 1521.
What is Oracle Net/SQLnet?