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ZyWALL 5/35/70 Series User’s Guide
Chapter 11 Firewall Screens 230
IMAP(TCP/UDP:143) Internet Message Access Protocol (IMAP) is used to access mail
stored on a remote mail server over a TCP/IP connection using port
143. IMAP has shorter response times than POP3.
IMAPS(TCP/UDP:993) IMAP over TLS/SSL (IMAPS) is a secure protocol (that encrypts
IMAP traffic) for receiving mail using a TLS/SSL connection.
AX.25(AX.25:0) AX.25 (Amateur X.25, an “Amateur” version of X.25) is the
communications protocol used for packet radio.
IPv6(IPv6:0) IPv6 (Internet Protocol version 6) is a protocol designed by the IETF
to replace and solve many problems of the version 4 (IPv4).
IPSEC_ TRANSPORT /
TUNNEL(AH:0)
The IPSEC AH (Authentication Header) tunneling protocol uses this
service.
IPSEC_TUNNEL(ESP:0) The IPSEC ESP (Encapsulation Security Protocol) tunneling protocol
uses this service.
IRC(TCP/UDP:6667) This is another popular Internet chat program.
MSN(TCP:1863) Microsoft Networks’ messenger service uses this protocol.
MULTICAST(IGMP:0) Internet Group Multicast Protocol is used when sending packets to a
specific group of hosts.
NetBIOS(TCP/UDP:137~139,
445)
NetBIOS (Network Basic Input/Output System) are TCP or UDP
broadcast packets that enable a computer to connect to and
communicate with a LAN.
NEWS(TCP:144) A protocol for news groups.
NFS(UDP:2049) Network File System – NFS is a client/server distributed file service
that provides transparent file sharing for network environments.
NNTP(TCP:119) Network News Transport Protocol is the delivery mechanism for the
USENET newsgroup service.
POP3(TCP:110) Post Office Protocol version 3 lets a client computer get e-mail from a
POP3 server through a temporary connection (TCP/IP or other).
POP3S(TCP/UDP:995) POP3 over TLS/SSL allows users to download mail over a secure
POP3 connection using TLS/SSL.
PPTP(TCP:1723) Point-to-Point Tunneling Protocol enables secure transfer of data
over public networks. This is the control channel.
PPTP_TUNNEL(GRE:0) Point-to-Point Tunneling Protocol enables secure transfer of data
over public networks. This is the data channel.
RCMD(TCP:512) Remote Command Service.
REAL_AUDIO(TCP:7070) A streaming audio service that enables real time sound over the web.
REXEC(TCP:514) Remote Execution Daemon.
RLOGIN(TCP:513) Remote Login.
ROADRUNNER(TCP/
UDP:1026)
This is Time Warner’s cable modem session management protocol. It
handles authentication and dynamic addressing.
RTELNET(TCP:107) Remote Telnet.
RTSP(TCP/UDP:554) The Real Time Streaming (media control) Protocol (RTSP) is a
remote control for multimedia on the Internet.
SFTP(TCP:115) Simple File Transfer Protocol.
Table 75 Predefined Services (continued)
SERVICE DESCRIPTION