Service Acronyms
F.1 Service Acronym Definitions
F
142
© 2008 Verizon. All Rights Reserved.

F.1 Service Acronym Definitions

DNS
Domain Name System. A data query system used to translate host names into
Internet addresses (i.e., www.somewebsite.com translates to 888.999.000.111).
Uses UDP 53 and TCP 53.
EPMAP
EndPoint Mapper. Uses UDP 135 and TCP 135.
FTP
File Transfer Protocol. A protocol used to transfer files over the Internet. Uses TCP
20 and 21.
HTTP
HyperText Transfer Protocol. This protocol delivers information over the Internet,
and is used when a computer connects to a Web site via an Internet browser.
Uses TCP 80.
HTTPS
HyperText Transfer Protocol using Secure Socket Layer. A secure version of the
protocol that delivers information over the Internet. Uses UDP 443 and TCP 443.
IMAP, IMAPv3
Internet Message Access Protocol. Protocols for retrieving E-mail messages. IMAP
uses TCP 143; IMAPv3 uses TCP 220.
IPSEC IKE, IPSEC ESP
IP Security. Protocols which support the secure exchange of packets at the
IP layer. Uses UDP 500.