User manual ZYXEL PRESTIGE 324

[. . . ] Prestige 324 Intelligent Broadband Sharing Gateway User's Guide Version 3. 60 January 2003 Prestige 324 Intelligent Broadband Sharing Gateway 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. All rights reserved. Disclaimer ZyXEL does not assume any liability arising out of the application or use of any products, or software described herein. Neither does it convey any license under its patent rights nor the patent rights of others. [. . . ] One to One: In One-to-One mode, the Prestige maps one local IP address to one global IP address. Many to One: In Many-to-One mode, the Prestige maps multiple local IP addresses to one global IP address. This is equivalent to SUA (i. e. , PAT, port address translation), ZyXEL's Single User Account feature that previous ZyXEL routers supported (the SUA Only option in today's routers). 11-4 NAT Prestige 324 Intelligent Broadband Sharing Gateway 3. Many to Many Overload: In Many-to-Many Overload mode, the Prestige maps the multiple local IP addresses to shared global IP addresses. Many One-to-One: In Many One-to-One mode, the Prestige maps the each local IP addresses to unique global IP addresses. Server: This type allows you to specify inside servers of different services behind the NAT to be accessible to the outside world. Port numbers do not change for One-to-One and Many One-to-One NAT mapping types. When you select One-to-One or Many- One-to-One NAT mapping, the firewall automatically allows traffic through to the LAN computers you specify in the Oneto-One or Many- One-to-One mapping rules. Table 11-2 NAT Mapping Types TYPE One-to-One Many-to-One (SUA/PAT) ILA1 ILA1 ILA2 . . . IGA1 IGA2 IGA1 IGA2 M:M Ov IP MAPPING IGA1 IGA1 IGA1 SMT ABBREVIATION 1:1 M:1 NAT 11-5 Table 11-2 NAT Mapping Types TYPE Many-One-to-One ILA1 ILA2 ILA3 . . . Server Server 1 IP Server 2 IP Server 3 IP IGA1 IGA1 IGA1 Server IP MAPPING IGA1 IGA2 IGA3 SMT ABBREVIATION M-1-1 11. 2 SUA (Single User Account) Versus NAT SUA (Single User Account) is a ZyXEL implementation of a subset of NAT that supports two types of mapping, Many-to-One and Server. The Prestige supports Full Feature NAT to map multiple global IP addresses to multiple private LAN IP addresses of clients or servers using mapping types as outlined in Table 11-2. Choose SUA Only if you have just one public WAN IP address for your Prestige. Choose Full Feature if you have multiple public WAN IP addresses for your Prestige. 11. 2. 1 Applying NAT You apply NAT via menus 4 or 11. 3 as displayed next. The next figure shows you how to apply NAT for Internet access in menu 4. Enter 4 from the main menu to go to Menu 4 - Internet Access Setup. 11-6 NAT Prestige 324 Intelligent Broadband Sharing Gateway Menu 4 - Internet Access Setup ISP's Name= myISP Encapsulation= Ethernet Service Type= Standard My Login= N/A My Password= N/A Login Server IP= N/A IP Address Assignment= Dynamic IP Address= N/A IP Subnet Mask= N/A Gateway IP Address= N/A Network Address Translation= SUA Only Press ENTER to Confirm or ESC to Cancel: Figure 11-3 Menu 4 -- Applying NAT for Internet Access The following figure shows how you apply NAT to the remote node in menu 11. 1. Move the cursor to the Edit IP field, press the [SPACE BAR] to select Yes and then press [ENTER] to bring up Menu 11. 3 - Remote Node Network Layer Options. NAT 11-7 Menu 11. 3 - Remote Node Network Layer Options IP Address Assignment= Dynamic IP Address: N/A IP Subnet Mask= N/A Gateway IP Addr= N/A Network Address Translation= Full Feature Metric= 1 Private= No RIP Direction= None Version= N/A Multicast= None Enter here to CONFIRM or ESC to CANCEL: Press Space Bar to Toggle. Figure 11-4 Menu 11. 3 -- Applying NAT to the Remote Node The following table describes the options for Network Address Translation. Table 11-3 Applying NAT in Menus 4 & 11. 3 FIELD Network Address Translation OPTIONS Full Feature DESCRIPTION When you select this option the SMT will use Address Mapping Set 1 (menu 15. 1 - see section 11. 3. 1 for further discussion). Choose Full Feature if you have multiple public WAN IP addresses for your Prestige. When you select this option the SMT will use Address Mapping Set 255 (menu 15. 1 - see section 11. 3. 1). Choose SUA Only if you have just one public WAN IP address for your Prestige. None SUA Only 11. 3 NAT Setup Use the Address Mapping Sets menus and submenus to create the mapping table used to assign global addresses to computers on the LAN. When you select Full Feature in menu 4 or 11. 3, the SMT 11-8 NAT Prestige 324 Intelligent Broadband Sharing Gateway will use Set 1, which supports all mapping types as outlined in Table 11-2. [. . . ] xxiii Rear Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-8 retry count. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6 retry interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5, 7-8, 9-9 RoadRunner Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]