ZyWALL 5/35/70 Series User’s Guide

Table 75 Predefined Services (continued)

SERVICE

DESCRIPTION

 

 

SIP-V2(UDP:5060)

The Session Initiation Protocol (SIP) is an application-layer control

 

(signaling) protocol that handles the setting up, altering and tearing

 

down of voice and multimedia sessions over the Internet. SIP is used

 

in VoIP (Voice over IP), the sending of voice signals over the Internet

 

Protocol.

SMTP(TCP:25)

Simple Mail Transfer Protocol is the message-exchange standard for

 

the Internet. SMTP enables you to move messages from one e-mail

 

server to another.

SNMP(TCP/UDP:161)

Simple Network Management Program.

 

 

SNMP-TRAPS(TCP/UDP:162)

Traps for use with the SNMP (RFC:1215).

 

 

SQL-NET(TCP:1521)

Structured Query Language is an interface to access data on many

 

different types of database systems, including mainframes, midrange

 

systems, UNIX systems and network servers.

SSDP(UDP:1900)

Simple Service Discovery Protocol (SSDP) is a discovery service

 

searching for Universal Plug and Play devices on your home network

 

or upstream Internet gateways using UDP port 1900.

SSH(TCP/UDP:22)

Secure Shell Remote Login Program.

 

 

STRMWORKS(UDP:1558)

Stream Works Protocol.

 

 

SYSLOG(UDP:514)

Syslog allows you to send system logs to a UNIX server.

 

 

TACACS(UDP:49)

Login Host Protocol used for (Terminal Access Controller Access

 

Control System).

TELNET(TCP:23)

Telnet is the login and terminal emulation protocol common on the

 

Internet and in UNIX environments. It operates over TCP/IP networks.

 

Its primary function is to allow users to log into remote host systems.

TFTP(UDP:69)

Trivial File Transfer Protocol is an Internet file transfer protocol similar

 

to FTP, but uses the UDP (User Datagram Protocol) rather than TCP

 

(Transmission Control Protocol).

VDOLIVE(TCP:7000)

Another videoconferencing solution.

 

 

Microsoft RDP(TCP:3389)

Microsoft offers terminal services through RDP (Remote Desktop

 

Protocol) to allow RDP clients to connect to a Windows terminal

 

server using UDP port 3389.

VNC(TCP:5900)

Virtual Network Computing (VNC) is used for remote connection

 

(desktop sharing) between a VNC server and a VNC viewer on TCP

 

port 5900.

NTP(TCP/UDP:123)

NTP (Network Time Protocol) is commonly used to synchronize the

 

time with a remote time server.

11.12 Example Firewall Rule

The following Internet firewall rule example allows a hypothetical My Service connection from the Internet.

1In the Service screen, click Add to open the Edit Custom Service screen.

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Chapter 11 Firewall Screens