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| FTP Ports for Data and Control respectively. |
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File Transfer Protocol
Is a standard network protocol used to transfer files from one host to another host over a TCP-based network, such as the Internet. |
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Secure Shell Port
A cryptographic network protocol for secure data communication, remote command-line login, remote command execution, and other secure network services between two networked computers. |
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Telnet
A network protocol used on the Internet or local area networks to provide a bidirectional interactive text-oriented communication facility using a virtual terminal connection. |
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Simple Mail Transfer Protocol
An Internet standard for electronic mail (e-mail) transmission across Internet Protocol (IP) networks. |
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Windows Internet Name Service
Microsoft's implementation of NetBIOS Name Service (NBNS), a name server and service for NetBIOS computer names. Effectively, WINS is to NetBIOS names what DNS is to domain names — a central mapping of host names to network addresses. |
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WHOIS (pronounced as the phrase who is)
A query and response protocol that is widely used for querying databases that store the registered users or assignees of an Internet resource, such as a domain name, an IP address block, or an autonomous system, but is also used for a wider range of other information. |
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Domain Name System
A hierarchical distributed naming system for computers, services, or any resource connected to the Internet or a private network.
Most prominently, it translates easily memorized domain names to the numerical IP addresses needed for the purpose of locating computer services and devices worldwide. |
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Dynamic Host Configuration Protocol
A standardized networking protocol used on IP networks that dynamically configures IP addresses and other information that is needed for Internet communication. DHCP allows computers and other devices to receive an IP address automatically from a central DHCP server, reducing the need for a network administrator or a user from having to configure these settings manually. |
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HyperText Transfer Protocol
An application protocol for distributed, collaborative, hypermedia information systems.[1] HTTP is the foundation of data communication for the World Wide Web.
Hypertext is structured text that uses logical links (hyperlinks) between nodes containing text. HTTP is the protocol to exchange or transfer hypertext. |
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Post Office Protocol 3
POP3 is a protocol for receiving e-mail by downloading it to your computer from a mailbox on the server of an Internet service provider. |
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Network Time Protocol
NTP is used for checking and synchronizing time with another computer ( Time Server). For example, this is the port which Windows XP and Windows Vista use when you configure the clock to automatically synchronize itself with a time server on the Internet. Ditto when you configure a Windows Server to synchronize its time over the Internet |
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Internet Message Access Protocol 4
IMAP4 is a method of accessing emails stored remotely on a mail server (a mailbox). This could be a mailbox at an ISP or a corporate mail server . IMAP4 is “the other” message access protocol.
IMAP4 allows more than one email client to be connected to the same mailbox at the same time. |
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Simple Network Management Protocol
UDP port used to manage, configure, and gather information about network devices (e.g. Firewalls, Routers) in a unified and uniform manner across a varied range of manufacturers. Most server operating systems, whether Windows or not, provide support for this protocol. |
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Border Gateway Protocol
A routing protocol used to exchange routing information between routers in autonomous networks. |
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Lightweight Directory Access Protocol
TCP Port used to find and manage network resources on an a hierarchical network systems such as Novell Network Directory Trees (NDS), and Microsoft Active Directory Service Domains. |
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Secure Socket Layer / Secure HTTP
This is the default port used for SSL encrypted communications (SSL = Secure Socket Layer), such as, for example, when you login to a secure site to purchase something. From a System Administrator’ s viewpoint, this is the port that is used for incoming and outgoing SSL connections. |
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| What is the AD/SMB Port used for? |
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Active Directoy / Samba share
This port is used by Microsoft Active Directory services and Microsoft SMB (Server Message Block) protocols. SMB is also known as “Microsoft Windows Network” and is the main protocol used by Microsoft Server Operating Systems for client/server access, and file and printer sharing. |
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| SQL Server Port and Replication Port |
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| What is the SQL Server Port and Replication Port used for? |
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| Used by Microsoft SQL Server 6 and above for SQL replication between SQL servers. |
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| SQL Server Monitoring Port |
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| What is the SQL Server Monitoring Port used for? |
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| Used by Microsoft SQL Server to monitor server performance. |
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Layer Two Tunneling Protocol
A tunneling and encryption standard used to connect two Private Business networks together over an Internet connection to create a Virtual Private Network (VPN). |
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