User manual ZYXEL PRESTIGE 791R

[. . . ] Prestige 791R G. SHDSL Router User's Guide Version 3. 40 May 2003 Prestige 791R G. SHDSL Router Copyright Copyright © 2003 by ZyXEL Communications Corporation. The contents of this publication may not be reproduced in any part or as a whole, transcribed, stored in a retrieval system, translated into any language, or transmitted in any form or by any means, electronic, mechanical, magnetic, optical, chemical, photocopying, manual, or otherwise, without the prior written permission of ZyXEL Communications Corporation. Published by ZyXEL Communications Corporation. Disclaimer ZyXEL does not assume any liability arising out of the application or use of any products, or software described herein. [. . . ] Use Menu 15 - NAT Setup to forward incoming service requests to the server(s) on your local network. You may enter a single port number or a range of port numbers to be forwarded, and the local IP address of the desired server. The port number identifies a service; for example, web service is on port 80 and FTP on port 21. In some cases, such as for unknown services or where one server can support more than one service (for example both FTP and web service), it might be better to specify a range of port numbers. In addition to the servers for specified services, NAT supports a default server. A service request that does not have a server explicitly designated for it is forwarded to the default server. If the default is not defined, the service request is simply discarded. Many residential broadband ISP accounts do not allow you to run any server processes (such as a Web or FTP server) from your location. Your ISP may periodically check for servers and may suspend your account if it discovers any active services at your location. The most often used port numbers are shown in the following table. Please refer to RFC 1700 for further information about port numbers. Please also refer to the included disk for more examples and details on NAT. Table 11-7 Services & Port Numbers SERVICES ECHO FTP (File Transfer Protocol) Telnet SMTP (Simple Mail Transfer Protocol) DNS (Domain Name System) Finger PORT NUMBER 7 21 23 25 53 79 11-14 NAT Prestige 791R G. SHDSL Router SERVICES HTTP (Hyper Text Transfer protocol or WWW, Web) POP3 (Post Office Protocol) NNTP (Network News Transport Protocol) SNMP (Simple Network Management Protocol) SNMP trap PPTP (Point-to-Point Tunneling Protocol) PORT NUMBER 80 110 119 161 162 1723 11. 4. 1 Configuring a Server behind NAT Follow these steps to configure a server behind NAT: Step 3. Enter 15 in the main menu to go to Menu 15 - NAT Setup. Enter 2 to display Menu 15. 2 - NAT Server Sets as shown next. Menu 15. 2 - NAT Server Sets 1. Server Server Server Server Server Server Server Server Server Server Set Set Set Set Set Set Set Set Set Set 1 (Used for SUA Only) 2 3 4 5 6 7 8 9 10 Enter Set Number to Edit: Figure 11-10 NAT Server Sets Step 5. Enter 1 to go to Menu 15. 2 NAT Server Setup as follows. NAT 11-15 Prestige 791R G. SHDSL Router Menu 15. 2 - NAT Server Setup Rule Start Port No. IP Address --------------------------------------------------1. 0 0 0. 0. 0. 0 Press ENTER to Confirm or ESC to Cancel: Figure 11-11 NAT Server Setup Step 6. Enter a port number in an unused Start Port No field. To forward only one port, enter it again in the End Port No field. To specify a range of ports, enter the last port to be forwarded in the End Port No field. [. . . ] 5-8, 6-1, 6-10, 8-6, 9-3, 14-4 Syslog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-6 Syslog IP Address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-7 Syslog Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-6 System Console Port Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]