Prestige 2602H/HW Series User’s Guide

Table 59 Predefined Services (continued)

SERVICE

DESCRIPTION

 

 

SNMP(TCP/UDP:161)

Simple Network Management Program.

 

 

SNMP-TRAPS (TCP/

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

UDP:162)

 

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 DUDP 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's Remote Desktop Protocol allows you to access a computer

 

through the Internet in order to work with its files programs and

 

resources.

VNC(TCP:5900)

Virtual Network Computing is a remote display system that allows you

 

to view a computer's 'desktop' environment through the Internet.

NTP(TCP/UDP:123)

Network Time Protocol is used in synchronizing the time of computer

 

clocks.

14.11 Anti-Probing

If an outside user attempts to probe an unsupported port on your Prestige, an ICMP response packet is automatically returned. This allows the outside user to know the Prestige exists. The Prestige supports anti-probing, which prevents the ICMP response packet from being sent.

This keeps outsiders from discovering your Prestige when unsupported ports are probed.

Internet Control Message Protocol (ICMP) is a message control and error-reporting protocol between a host server and a gateway to the Internet. ICMP uses Internet Protocol (IP) datagrams, but the messages are processed by the TCP/IP software and directly apparent to the application user.

Click Firewall in the navigation panel and click Anti Probing to display the screen as shown.

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Chapter 14 Firewall Configuration