Fortinet fortigate-3000 User Guide

ESP

Encapsulating Security Payload. This service 

is used by manual key and AutoIKE VPN 

tunnels for communicating encrypted data. 

AutoIKE key VPN tunnels use ESP after 

establishing the tunnel using IKE.

50

AOL

AOL instant messenger protocol.

tcp

5190-5194

BGP

Border Gateway Protocol routing protocol. 

BGP is an interior/exterior routing protocol.

tcp

179

DHCP

Dynamic Host Configuration Protocol (DHCP) 

allocates network addresses and delivers 

configuration parameters from DHCP servers 

to hosts.

udp

67

DNS

Domain name service for translating domain 

names into IP addresses.

tcp

53

udp

53

FINGER

A network service that provides information 

about users.

tcp

79

FTP

FTP service for transferring files.

tcp

21

GOPHER

Gopher communication service. Gopher 

organizes and displays Internet server 

contents as a hierarchically structured list of 

files.

tcp

70

H323

H.323 multimedia protocol. H.323 is a 

standard approved by the International 

Telecommunication Union (ITU) that defines 

how audiovisual conferencing data is 

transmitted across networks.

tcp

1720, 1503

HTTP

HTTP is the protocol used by the word wide 

web for transferring data for web pages.

tcp

80

HTTPS

HTTP with secure socket layer (SSL) service 

for secure communication with web servers.

tcp

443

IKE

IKE is the protocol to obtain authenticated 

keying material for use with ISAKMP for 

IPSEC.

udp

500

IMAP

Internet Message Access Protocol is a 

protocol used for retrieving email messages.

tcp

143

Internet-Locator-

Service

Internet Locator Service includes LDAP, User 

Locator Service, and LDAP over TLS/SSL.

tcp

389

IRC

Internet Relay Chat allows people connected 

to the Internet to join live discussions.

tcp

6660-6669

L2TP

L2TP is a PPP-based tunnel protocol for 

remote access.

tcp

1701

LDAP

Lightweight Directory Access Protocol is a set 

of protocols used to access information 

directories.

tcp

389

NetMeeting

NetMeeting allows users to teleconference 

using the Internet as the transmission 

medium.

tcp

1720

NFS

Network File System allows network users to 

access shared files stored on computers of 

different types.

tcp

111, 2049