Netopia 4541 Manuale Utente

Netopia ™ 4541 and 4542ADSL Routers User’s Reference Guide

1-2 User’s Reference Guide How to use this guide In addition to the simple documentation contained in the accompanying Getting Started Guide , this

9-16 User’s Reference Guide Enter the First and Last Port Number between ports 1 and 65535. Select OK and press Return. You will be returned to the

Multiple Network Address Translation 9-17Modifying server listsOnce a server list exists, you can select it for modification or deletion. Select Sho

9-18 User’s Reference Guide Selecting Show/Change Server or Delete Server displays the same pop-up menu.Select any server from the list and press Re

Multiple Network Address Translation 9-19Deleting a serverTo delete a server from the list, select Delete Server from the Show/Change NAT Server Lis

9-20 User’s Reference GuideBinding Map Lists and Server ListsOnce you have created your map lists and server lists, for most Netopia Router models yo

Multiple Network Address Translation 9-21 Select NAT Map List and press Return. A pop-up menu displays a list of your defined map lists. Select the

9-22 User’s Reference GuideIP Parameters (WAN Default Profile)The Netopia 4541/4542 using RFC 1483 supports a WAN default profile that permits several

Multiple Network Address Translation 9-23 Select NAT Map List and press Return. A pop-up menu displays a list of your defined map lists. Select the

9-24 User’s Reference GuideNAT AssociationsConfiguration of map and server lists alone is not sufficient to enable NAT for a WAN connection because map

Multiple Network Address Translation 9-25keys. Select the item by pressing Return to display a pop-up menu of all of your configured lists. Select t

Making the Physical Connections 2-1CCCChhhhaaaapppptttteeeerrrr 2222MMMMaaaakkkkiiiinnnngggg tttthhhheeee PPPPhhhhyyyyssssiiiiccccaaaallll

9-26 User’s Reference GuideMultiNAT Configuration ExampleTo help you understand a typical MultiNAT configuration, this section describes an example of

Multiple Network Address Translation 9-27Enter your ISP-supplied values as shown below.Select NEXT SCREEN and press Return.Your IP values are shown

9-28 User’s Reference GuideSelect Show/Change Public Range, then Easy-PAT Range, and press Return. Enter the value your ISP assigned for your public

Multiple Network Address Translation 9-29Select ADD NAT PUBLIC RANGE and press Return. You are returned to the Network Address Translation screen.Ne

9-30 User’s Reference GuideTo make these changes, first limit the range of remapped addresses on the Static Map and then edit the default server list

Virtual Private Networks (VPNs) 10-1CCCChhhhaaaapppptttteeeerrrr 11110000VVVViiiirrrrttttuuuuaaaallll PPPPrrrriiiivvvvaaaatttteeee NNNNeeee

10-2 User’s Reference GuideTunneling is a process of creating a private path between a remote user or private network and another private network ove

Virtual Private Networks (VPNs) 10-3the receiving side, an IPsec-compliant device decrypts each packet. The Netopia 4541/4542 supports the more secu

10-4 User’s Reference GuidePPTP configurationTo set up the router as a PPTP Network Server (PNS) capable of answering PPTP tunnel requests you must al

Virtual Private Networks (VPNs) 10-5When you define a Connection Profile as using PPTP by selecting PPTP as the datalink encapsulation method, and the

2-2 User’s Reference Guide You will need: A Windows 95 or 98–based PC or a Macintosh computer with Ethernet connectivity for configuring the Netopi

10-6 User’s Reference GuideNote: The Netopia 4541/4542 supports 128-bit (“strong”) encryption. Unlike MS-CHAP version 1, which supports one-way authe

Virtual Private Networks (VPNs) 10-7The IP Profile Parameters screen appears. Enter the Remote IP Address and Remote IP Mask for the host to which y

10-8 User’s Reference GuideThe Add Connection Profile screen appears. From the Data Link Encapsulation pop-up menu select IPsec. Then select Data Li

Virtual Private Networks (VPNs) 10-9 You must enter an Encryption Key if the Encryption Transform is DES. The key for DES must be a hexadecimal str

10-10 User’s Reference GuideIP Profile ParametersThe following IP Profile Options screen is displayed for an IPsec Connection Profile. You must specify

Virtual Private Networks (VPNs) 10-11Map Lists, Server Lists, and PAT addresses are described in detail in Chapter 9, “Multiple Network Address Tran

10-12 User’s Reference GuideIf you do not specify the Remote Tunnel Endpoint Address, the router will use the default gateway to reach the partner. I

Virtual Private Networks (VPNs) 10-13When you define a Connection Profile as using ATMP by selecting ATMP as the datalink encapsulation method, and th

10-14 User’s Reference Guidethe gateway partner is reached. If you do not specify the ATMP Partner IP Address, the router will use the default gatewa

Virtual Private Networks (VPNs) 10-15 Enter the Remote IP Address and Remote IP Mask for the host to which you want to tunnel.Encryption SupportEnc

Making the Physical Connections 2-3 3. Connect the Ethernet cable to the Ethernet port on the router and the other end to your computer.You should

10-16 User’s Reference Guideand transparently. ATMP/PPTP Default ProfileThe WAN Configuration menu offers a ATMP/PPTP Default Profile option. Use this s

Virtual Private Networks (VPNs) 10-17If you chose MS-CHAP authentication, the Data Compression option is not required, and this menu item becomes hi

10-18 User’s Reference GuideDial-Up Networking for VPNMicrosoft Windows Dial-Up Networking software permits a remote standalone workstation to establ

Virtual Private Networks (VPNs) 10-19The Communications window appears.5. In the Communications window, select Dial-Up Networking and click the OK b

10-20 User’s Reference GuideConfiguring a Dial-Up Networking profileOnce you have created your Dial-Up Networking profile, you configure it for TCP/IP ne

Virtual Private Networks (VPNs) 10-214. Click the TCP/IP Settings button. If your ISP uses dynamic IP addressing (DHCP), select the Server assigne

10-22 User’s Reference GuideThis displays a list of possible selections for the communications option. Active components will have a check in the che

Virtual Private Networks (VPNs) 10-23Connecting using Dial-Up NetworkingA Dial-Up Networking connection will be automatically launched whenever you

10-24 User’s Reference GuidePPTP exampleTo enable a firewall to allow PPTP traffic, you must provision the firewall to allow inbound and outbound TCP pa

Virtual Private Networks (VPNs) 10-25In the Display/Change Filter Set screen select Display/Change Output Filter. Display/Change Output Filter scree

2-4 User’s Reference Guide

10-26 User’s Reference GuideSelect Output Filter 2 and press Return. In the Change Output Filter 2 screen, set the Protocol Type to allow GRE as sho

Virtual Private Networks (VPNs) 10-27Select Input Filter 1 and press Return. In the Change Input Filter 1 screen, set the Destination Port informat

10-28 User’s Reference GuideIn the Display/Change Filter Set screen select Display/Change Output Filter. Display/Change Output Filter screenSelect Ou

Virtual Private Networks (VPNs) 10-29 Change Output Filter 2 Enabled: Yes For

10-30 User’s Reference Guide

Security 11-1CCCChhhhaaaapppptttteeeerrrr 11111111SSSSeeeeccccuuuurrrriiiittttyyyyThe Netopia 4541/4542 provides a number of security features to

11-2 User’s Reference GuideOnce user accounts are created, users who attempt to access protected screens will be challenged. Users who enter an incor

Security 11-3To add a new user account, select Add User in the Security Options screen and press Return. The Add Name With Write Access screen appea

11-4 User’s Reference GuideTo restrict Telnet access, select Security in the Advanced Configuration menu. The Security Options screen will appear. The

Security 11-5Each inspector has a specific task. One inspector’s task may be to examine the destination address of all outgoing packages. That inspec

Sharing the Connection 3-1CCCChhhhaaaapppptttteeeerrrr 3333SSSShhhhaaaarrrriiiinnnngggg tttthhhheeee CCCCoooonnnnnnnneeeeccccttttiiiioooon

11-6 User’s Reference GuideIf the package does not match the first inspector’s criteria, it goes to the second inspector, and so on. You can see that

Security 11-7Parts of a filterA filter consists of criteria based on packet attributes. A typical filter can match a packet on any one of the following

11-8 User’s Reference GuidePort number comparisonsA filter can also use a comparison option to evaluate a packet’s source or destination port number.

Security 11-9Putting the parts togetherWhen you display a filter set, its filters are displayed as rows in a table:The table’s columns correspond to e

11-10 User’s Reference GuideFiltering example #1Returning to our filtering rule example from above (see page 11-6), look at how a rule is translated i

Security 11-11This filter blocks any packets coming from a remote network with the IP network address 200.233.14.0. The 0 at the end of the address s

11-12 User’s Reference GuideAn approach to using filtersThe ultimate goal of network security is to prevent unauthorized access to the network without

Security 11-13To add a new filter set, select Add Filter Set in the Filter Sets screen and press Return. The Add Filter Set screen appears. Naming a

11-14 User’s Reference GuideAdding filters to a filter setThere are two kinds of filters you can add to a filter set: input and output. Input filters chec

Security 11-15Note: There are two groups of items in this screen, one for input filters and one for output filters. In this section, you’ll learn how

3-2 User’s Reference Guide Dynamic configuration (recommended) To configure your PC for dynamic addressing do the following: Note: You can also use t

11-16 User’s Reference Guide5. Select Source IP Address Mask and enter a mask for the source IP address. This allows you to further modify the way th

Security 11-17Deleting filtersTo delete a filter, select Delete Input Filter or Delete Output Filter in the Display/Change Filter Set screen to displa

11-18 User’s Reference GuideBasic Firewall blocks undesirable traffic originating from the WAN (in most cases, the Internet), but forwards all traffic

Security 11-19Output filter 1: This filter forwards all outgoing traffic to make sure that no outgoing connections from the LAN are blocked.Basic Firew

11-20 User’s Reference GuideFTP sessions. To allow WAN-originated FTP sessions to a LAN-based FTP server with the IP address a.b.c.d (corresponding t

Security 11-21Basic IP packet componentsAll IP packets contain the same basic header information, as follows:This header information is what the pac

11-22 User’s Reference GuideFirewall design rulesThere are two basic rules to firewall design: “What is not explicitly allowed is denied.”and “What

Security 11-23Logical AND functionWhen a packet is compared (in most cases) a logical AND function is performed. First the IP addresses and subnet m

11-24 User’s Reference GuideExample filter set screenThis is an example of the Netopia filter set screen:Filter basicsIn the source or destination IP a

Security 11-25Example networkExample filtersExample 1 Incoming packet has the source address of 200.1.1.28This incoming IP packet has a source IP add

Sharing the Connection 3-3Static configuration (optional)If you are manually configuring for a fixed or static IP address, perform the following:1. Go

11-26 User’s Reference GuideExample 2 Incoming packet has the source address of 200.1.1.184.This incoming IP packet (10000000) has a source IP addres

Security 11-27Example 4Incoming packet has the source address of 200.1.1.104.Since the Source IP Network Address in the Netopia 4541/4542 is 0110000

11-28 User’s Reference Guide

Monitoring Tools 12-1CCCChhhhaaaapppptttteeeerrrr 11112222MMMMoooonnnniiiittttoooorrrriiiinnnngggg TTTToooooooollllssssThis chapter discusses

12-2 User’s Reference GuideGeneral statusCurrent Date: The current date; this can be set with the Date and Time utility (see “Date and time” on page

Monitoring Tools 12-3Current statusThe current status section is a table showing the current status of the DSL connection. For example:Profile Name:

12-4 User’s Reference GuideStatistics & LogsWhen you are troubleshooting your Netopia 4541/4542, the Statistics & Logs screens provide insigh

Monitoring Tools 12-5WAN Event HistoryThe WAN Event History screen lists a total of 128 events on the WAN. The most recent events appear at the top.

12-6 User’s Reference GuideIn the Statistics & Logs screen, select Device Event History. The Device Event History screen appears.If the event his

Monitoring Tools 12-7IP Routing TableThe IP routing table displays all of the IP routes currently known to the Netopia 4541/4542.The routing table s

3-4 User’s Reference Guide4. Click OK in this window and the next window. When prompted, reboot the computer.Note: You can also use these instruction

12-8 User’s Reference GuidePhysical InterfaceThe top left side of the screen lists total packets received and total packets transmitted for the follo

Monitoring Tools 12-9System InformationThe System Information screen gives a summary view of the general system level values in the Netopia 4541/454

12-10 User’s Reference GuideThe SNMP Setup screenFrom the Main Menu, select SNMP in the System Configuration screen and press Return. The SNMP Setup s

Monitoring Tools 12-11By default, the read-only and read/write community strings are set to public and private, respectively. You should change both

12-12 User’s Reference GuideSetting the IP trap receivers1. Select Add IP Trap Receiver.2. Select Receiver IP Address or Domain Name. Enter the IP ad

Utilities and Diagnostics 13-1CCCChhhhaaaapppptttteeeerrrr 11113333UUUUttttiiiilllliiiittttiiiieeeessss aaaannnndddd DDDDiiiiaaaaggggnnnnoo

13-2 User’s Reference GuidePingThe Netopia 4541/4542 Router includes a standard Ping test utility. A Ping test generates IP packets destined for a pa

Utilities and Diagnostics 13-3Status: The current status of the Ping test. This item can display the status messages shown in the able below:Packets

13-4 User’s Reference GuidePackets Lost: The number of packets unaccounted for, shown in total and as a percentage of total packets sent. This stati

Utilities and Diagnostics 13-5To trace a route, follow these steps:1. Select Host Name or IP Address and enter the name or address of the destinatio

Sharing the Connection 3-5Configuring TCP/IP on Macintosh ComputersThe following is a quick guide to configuring TCP/IP for MacOS computers. Configurin

13-6 User’s Reference GuideThe Telnet client screen appears. Enter the host name or the IP address in dotted decimal format of the machine you want

Utilities and Diagnostics 13-7Transferring configuration and firmware files with TFTPTrivial File Transfer Protocol (TFTP) is a method of transferring

13-8 User’s Reference Guide Select GET ROUTER FIRMWARE FROM SERVER and press Return. You will see the following dialog box: Select CANCEL to exit w

Utilities and Diagnostics 13-9 Select GET CONFIG FROM SERVER and press Return. You will see the following dialog box: Select CANCEL to exit withou

13-10 User’s Reference GuideUpdating firmwareFirmware updates may be available periodically from Netopia or from a site maintained by your organizatio

Utilities and Diagnostics 13-11Caution!Do not manually power down or reset the Netopia 4541/4542 while it is automatically resetting or it could be

13-12 User’s Reference Guide3. Select CANCEL to exit without uploading the file, or select CONTINUE to upload the file.If you choose CONTINUE, you will

Troubleshooting A-1AAAAppppppppeeeennnnddddiiiixxxx AAAATTTTrrrroooouuuubbbblllleeeesssshhhhoooooooottttiiiinnnnggggThis appendix is intended to h

A-2 User’s Reference GuideConsole connection problemsCan’t see the configuration screens (nothing appears) Make sure the cable connection from the Ne

Troubleshooting A-3How to reset the router to factory defaultsLose your password? This section shows how to reset the router so that you can access t

Copyright ©2001 Netopia, Inc., v.080102All rights reserved. Printed in the U.S.A.This manual and any associated artwork, software, and product design

3-6 User’s Reference GuideStatic configuration (optional)3. In the TCP/IP window or in the MacTCP/More window, select or type information into the fiel

A-4 User’s Reference GuideTechnical supportNetopia, Inc. is committed to providing its customers with reliable products and documentation, backed by

Troubleshooting A-5Online product informationProduct information can be found in the following:Netopia World Wide Web server via http://www.netopia.c

A-6 User’s Reference Guide

Technical Specifications and Safety Information B-1AAAAppppppppeeeennnnddddiiiixxxx BBBBTTTTeeeecccchhhhnnnniiiiccccaaaallll SSSSppppeeeecccciii

B-2 User’s Reference GuideDecember 1, 2000 Canada – CSA: CAN/CSA-C22.2 No. 950-95EMI: FCC Part 15 Class BInternationalSafety Approvals: Low Voltag

Technical Specifications and Safety Information B-3The telephone company may make changes in its technical operations and procedures; if such changes

B-4 User’s Reference GuideCautionUsers should not attempt to make such connections themselves, but should contact the appropriate electric inspection

Technical Specifications and Safety Information B-5Replace only with the same or equivalent type recommended by the manufacturer. Dispose of used batt

B-6 User’s Reference Guide

Limited Warranty and Limitation of Remedies-Revised January 2002LLLLiiiimmmmiiiitttteeeedddd WWWWaaaarrrrrrrraaaannnnttttyyyy aaaannnndddd LL

Sharing the Connection 3-7Note: You can also use these instructions to configure other computers on your network with manual or static IP addresses.

3-8 User’s Reference Guide

Connecting to Your Local Area Network 4-1CCCChhhhaaaapppptttteeeerrrr 4444CCCCoooonnnnnnnneeeeccccttttiiiinnnngggg ttttoooo YYYYoooouuuurrr

4-2 User’s Reference GuideOnce the Netopia 4541/4542 is properly configured and connected to your LAN, PC and Macintosh computers that have their requ

Console-Based Management 5-1CCCChhhhaaaapppptttteeeerrrr 5555CCCCoooonnnnssssoooolllleeee----BBBBaaaasssseeeedddd MMMMaaaannnnaaaaggggeeeemmmm

5-2 User’s Reference Guidemay be using the router to connect to more than one service provider or remote site. The System Configuration menus display

Console-Based Management 5-3Configuring Telnet softwareIf you are configuring your router using a Telnet session, your computer must be running a Teln

5-4 User’s Reference GuideLaunch your terminal emulation software and configure the communications software for the values shown in the table below. T

Easy Setup 6-1CCCChhhhaaaapppptttteeeerrrr 6666EEEEaaaassssyyyy SSSSeeeettttuuuuppppThis chapter describes how to use the Easy Setup console s

Contents 1 G Chapter 1 — Introduction...1-1 Overview...

6-2 User’s Reference GuideIf you do not see the Main Menu, verify that: If you are using a serial connection, that your serial port speed is the sam

Easy Setup 6-3The Main Menu appears.2. Select the first item on the Main Menu list, Easy Setup. Press Return to bring up the ADSL Line Configuration m

6-4 User’s Reference GuideRouted 1483. If you select Bridged 1483, a new option PPP over Ethernet (PPPoE) appears. You can then toggle PPPoE On or Of

Easy Setup 6-5If you selected Numbered, the following fields appear. Select the editable field labeled Local WAN IP Address.The default address is 0.

6-6 User’s Reference Guide1. Select Ethernet IP Address and enter the first IP address from the IP address range your ISP has given you. This will be

Easy Setup 6-77. Toggle IP Address Serving to On or Off, depending on whether you want the device’s IP address server to supply dynamic IP addresses

6-8 User’s Reference GuideThe Router will restart and your configuration settings will be activated. You can then Exit or Quit your Telnet application

WAN and System Configuration 7-1CCCChhhhaaaapppptttteeeerrrr 7777WWWWAAAANNNN aaaannnndddd SSSSyyyysssstttteeeemmmm CCCCoooonnnnffffiiiig

7-2 User’s Reference Guide1. Select Circuit Type and from the pop-up menu choose the type of circuit to which you will be connecting. Model 4541 of

WAN and System Configuration 7-3 Enter a name for the circuit in the Circuit Name field. Toggle Circuit Enabled to Yes. Enter the Virtual Path Iden

2 User’s Reference Guide IP Easy Setup ... 6-5Easy Setup Security Configuration ...

7-4 User’s Reference GuideCreating a new Connection ProfileFor a Netopia 4541/4542, connection profiles are useful for configuring the connection and au

WAN and System Configuration 7-53. Select Data Link Encapsulation and press Return. The pop-up menu offers the possible data link encapsulation metho

7-6 User’s Reference Guide7. Toggle or enter any IP Parameters you require and return to the Add Connection Profile screen by pressing Escape. For mor

WAN and System Configuration 7-7The default profileIf you are using RFC1483 datalink encapsulation, the Default Profile screen controls whether or not

7-8 User’s Reference GuideIP parameters (default profile) screenIf you are using RFC1483 datalink encapsulation, the IP Parameters (Default Profile) sc

WAN and System Configuration 7-9Viewing scheduled connectionsTo display a table of scheduled connections, select Display/Change Scheduled Connection

7-10 User’s Reference GuideThe other columns show: The time of day that the connection will Begin At The duration of the connection (HH:MM) Whethe

WAN and System Configuration 7-11demand call on the line. Demand-Allowed, meaning that this schedule will permit a demand call on the line. Demand-

7-12 User’s Reference GuideSet Once-Only ScheduleIf you set How Often to Once Only, select Set Once-Only Schedule and go to the Set Once-Only Schedul

WAN and System Configuration 7-13Modifying a scheduled connectionTo modify a scheduled connection, select Display/Change Scheduled Connection in the

Contents 3 G IP Address Pools... 8-13DHCP NetBIOS Options... 8-15Mor

7-14 User’s Reference GuideThe console screen will open to the Main Menu, similar to the screen shown below: Navigating through the system configurati

WAN and System Configuration 7-15System configuration featuresThe Netopia 4541/4542 ADSL Router’s default settings may be all you need to configure you

7-16 User’s Reference GuideIP setupThese screens allow you to configure your network’s use of the IP networking protocol. Details are given in “IP Se

WAN and System Configuration 7-173. Select the Router’s time zone from the Time Zone pop-up menu and press Return.4. In the NTP Update Interval field,

7-18 User’s Reference GuideSecurityThese screens allow you to add users and define passwords on your network. Details are given in “Security” on page

WAN and System Configuration 7-19 You can specify the UNIX syslog Facility to use by selecting the Facility pop-up. Erase the log by selecting DUMP

7-20 User’s Reference Guide

IP Setup 8-1CCCChhhhaaaapppptttteeeerrrr 8888IIIIPPPP SSSSeeeettttuuuuppppThe Netopia 4541/4542 uses Internet Protocol (IP) to communicate bot

8-2 User’s Reference GuideIP SetupThe IP Setup options screen is where you configure the Ethernet side of the Netopia 4541/4542. The information you e

IP Setup 8-3The Netopia 4541/4542 supports multiple IP subnets on the Ethernet interface. You may want to configure multiple IP subnets to service mo

4 User’s Reference Guide About ATMP Tunnels... 10-12ATMP configuration...

8-4 User’s Reference GuideIP subnetsThe IP Subnets screen allows you to configure up to eight Ethernet IP subnets on unlimited-user models, one “prima

IP Setup 8-5For example: To delete a configured subnet, set both the IP address and subnet mask values to 0.0.0.0, either explicitly or by clearing

8-6 User’s Reference GuideIf you have configured multiple Ethernet IP subnets, the IP Setup screen changes slightly:The IP address and Subnet mask ite

IP Setup 8-7The Static Routes screen will appear.Viewing static routesTo display a view-only table of static routes, select Display/Change Static Ro

8-8 User’s Reference GuideSubnet Mask: The subnet mask associated with the destination network.Next Gateway: The IP address of the router that will b

IP Setup 8-9information; Low means that the RIP information takes precedence over the static route. If the static route conflicts with a connection

8-10 User’s Reference GuideIP Address ServingIn addition to being a router, the Netopia 4541/4542 is also an IP address server. There are three proto

IP Setup 8-11Follow these steps to configure IP Address Serving: If you enabled IP Address Serving, then DHCP, BootP clients and Dynamic WAN clients

8-12 User’s Reference GuideIf you have configured multiple Ethernet IP subnets, the appearance of the IP Address Serving screen is altered slightly:Th

IP Setup 8-13IP Address PoolsThe IP Address Pools screen allows you to configure a separate IP address serving pool for each of up to eight configured

Contents 5 G Basic IP packet components... 11-21Basic protocol types... 11-21Firewall

8-14 User’s Reference GuideNumerous factors influence the choice of served address. It is difficult to specify the address that will be served to a par

IP Setup 8-15DHCP NetBIOS OptionsIf your network uses NetBIOS, you can enable the Netopia 4541/4542 to use DHCP to distribute NetBIOS information.Ne

8-16 User’s Reference Guide From the NetBios Type pop-up menu, select the type of NetBIOS used on your network. To serve DHCP clients with the Net

IP Setup 8-17Select Release BootP Leases and press Return. Back in IP Address Serving, the Serve Dynamic WAN Clients toggleMore Address Serving Opt

8-18 User’s Reference GuideConfiguring the IP Address Server optionsTo access the enhanced DHCP server functions, from the Main Menu navigate to Stati

IP Setup 8-19You can select the entries in the Served IP Addresses screen. Use the up and down arrow keys to move the selection to one of the entrie

8-20 User’s Reference Guide Details… is displayed if the entry is associated with both a host name and a client identifier. Selecting Details… displa

IP Setup 8-21 Include is displayed if the entry is either excluded or declined. An IP address is marked declined when a client to whom the DHCP ser

8-22 User’s Reference GuideThe router’s Ethernet IP address(es) will be automatically excluded from the address serving pool(s) on startup. Entries i

IP Setup 8-23DDDDHHHHCCCCPPPP RRRReeeellllaaaayyyy AAAAggggeeeennnnttttThe Netopia 4541/4542 offers DHCP Relay Agent functionality, as defined

6 User’s Reference Guide Restarting the system... 13-12 Appendix A — Troubleshooting...

8-24 User’s Reference GuideSelect IP Address Serving and press Return. The IP Address Serving screen appears.Select IP Address Serving Mode. The pop-

IP Setup 8-25Note: The remote DHCP server(s) to which the Netopia Router is relaying DHCP requests must be capable of servicing relayed requests. No

8-26 User’s Reference Guide2. Toggle the Profile Enabled value to Yes or No. The default is Yes.3. Select IP Profile Parameters and press Return. The I

IP Setup 8-275. Select ADD PROFILE NOW and press Return. Your new connection profile will be added.If you want to view the connection profiles in your

8-28 User’s Reference Guide

Multiple Network Address Translation 9-1CCCChhhhaaaapppptttteeeerrrr 9999MMMMuuuullllttttiiiipppplllleeee NNNNeeeettttwwwwoooorrrrkkkk AAAA

9-2 User’s Reference GuideThe following is a general description of these features:Port Address TranslationThe simplest form of classic Network Addre

Multiple Network Address Translation 9-3When addresses are returned to the group of available addresses, they are returned to the head of the group,

9-4 User’s Reference GuideExterior addresses are allocated to internal hosts on a demand, or as-needed, basis and then made available when traffic fro

Multiple Network Address Translation 9-5In order to support this type of mapping, you define two address ranges. First, you define a public range whic

Introduction 1-1CCCChhhhaaaapppptttteeeerrrr 1111IIIInnnnttttrrrroooodddduuuuccccttttiiiioooonnnn Overview The Netopia 4541/4542 ADSL Router is

9-6 User’s Reference GuideEasy Setup Profile configurationThe screen below is an example. Depending on the type of router you are using, fields displaye

Multiple Network Address Translation 9-7You can configure a simple 1-to-many PAT (often referred to simply as NAT) mapping using Easy Setup. More com

9-8 User’s Reference GuideThe Network Address Translation screen appears.Public Range defines an external address range and indicates what type of map

Multiple Network Address Translation 9-9The Add NAT Public Range screen appears. Select Range Name and give a descriptive name to this range. Sele

9-10 User’s Reference Guide Select Map List Name and enter a descriptive name for this map list. A new menu item, Add Map, appears. Select Add Map

Multiple Network Address Translation 9-11 From the list of public ranges you defined, select the one that you want to map to the interior range for

9-12 User’s Reference GuideModifying map listsYou can make changes to an existing map list after you have created it. Since there may be more than on

Multiple Network Address Translation 9-13 Add Map allows you to add a new map to the map list. Show/Change Maps allows you to modify the individua

9-14 User’s Reference GuideAdding Server ListsServer lists, also known as Exports, are handled similarly to map lists. If you want to make a particul

Multiple Network Address Translation 9-15 Select Add Server and press Return. The Add NAT Server screen appears. Select Service and press Return.