Prestige 2602HW Series User’s Guide
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Chapter 14 Firewall Configuration
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.
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)
Simole 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.
Table 51
Predefined Services (continued)
SERVICE
DESCRIPTION
Summary of Contents for Prestige 2602HW Series
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Page 40: ...Prestige 2602HW Series User s Guide 40 Introduction to DSL...
Page 72: ...Prestige 2602HW Series User s Guide 72 Chapter 4 Password Setup...
Page 102: ...Prestige 2602HW Series User s Guide 102 Chapter 6 Wireless LAN Setup...
Page 112: ...Prestige 2602HW Series User s Guide 112 Chapter 7 WAN Setup...
Page 124: ...Prestige 2602HW Series User s Guide 124 Chapter 8 Network Address Translation NAT Screens...
Page 130: ...Prestige 2602HW Series User s Guide 130 Chapter 9 Introduction to VoIP...
Page 142: ...Prestige 2602HW Series User s Guide 142 Chapter 10 Voice Screens...
Page 148: ...Prestige 2602HW Series User s Guide 148 Chapter 12 Time and Date...
Page 162: ...Prestige 2602HW Series User s Guide 162 Chapter 13 Firewalls...
Page 192: ...Prestige 2602HW Series User s Guide 192 Chapter 16 Remote Management Configuration...
Page 206: ...Prestige 2602HW Series User s Guide 206 Chapter 17 Universal Plug and Play UPnP...
Page 212: ...Prestige 2602HW Series User s Guide 212 Chapter 18 Logs Screens...
Page 214: ...Prestige 2602HW Series User s Guide 214 Chapter 19 Maintenance Figure 102 System Status...
Page 224: ...Prestige 2602HW Series User s Guide 224 Chapter 19 Maintenance...
Page 232: ...Prestige 2602HW Series User s Guide 232 Chapter 20 Introducing the SMT...
Page 236: ...Prestige 2602HW Series User s Guide 236 Chapter 21 Menu 1 General Setup...
Page 240: ...Prestige 2602HW Series User s Guide 240 Chapter 22 Menu 2 WAN Backup Setup...
Page 244: ...Prestige 2602HW Series User s Guide 244 Chapter 23 Menu 3 LAN Setup...
Page 248: ...Prestige 2602HW Series User s Guide 248 Chapter 24 Wireless LAN Setup...
Page 254: ...Prestige 2602HW Series User s Guide 254 Chapter 25 Internet Access...
Page 268: ...Prestige 2602HW Series User s Guide 268 Chapter 27 Static Route Setup...
Page 272: ...Prestige 2602HW Series User s Guide 272 Chapter 28 Bridging Setup...
Page 288: ...Prestige 2602HW Series User s Guide 288 Chapter 29 Network Address Translation NAT...
Page 304: ...Prestige 2602HW Series User s Guide 304 Chapter 31 Filter Configuration...
Page 324: ...Prestige 2602HW Series User s Guide 324 Chapter 34 System Information and Diagnosis...
Page 340: ...Prestige 2602HW Series User s Guide 340 Chapter 35 Firmware and Configuration File Maintenance...
Page 346: ...Prestige 2602HW Series User s Guide 346 Chapter 36 System Maintenance...
Page 350: ...Prestige 2602HW Series User s Guide 350 Chapter 37 Remote Management...
Page 362: ...Prestige 2602HW Series User s Guide 362 Chapter 39 Call Scheduling...
Page 366: ...Prestige 2602HW Series User s Guide 366 Chapter 40 Internal SPTGEN...
Page 372: ...Prestige 2602HW Series User s Guide 372 Chapter 41 Troubleshooting...
Page 376: ...Prestige 2602HW Series User s Guide 376 Appendix A Hardware Specifications...
Page 396: ...Prestige 2602HW Series User s Guide 396 Appendix C IP Subnetting...
Page 402: ...Prestige 2602HW Series User s Guide 402 Appendix E Wireless LAN and IEEE 802 11...
Page 409: ...Prestige 2602HW Series User s Guide Appendix H Triangle Route 409...
Page 410: ...Prestige 2602HW Series User s Guide 410 Appendix H Triangle Route...
Page 434: ...Prestige 2602HW Series User s Guide 434 Appendix J Command Interpreter...
Page 436: ...Prestige 2602HW Series User s Guide 436 Appendix K Firewall Commands...