Chapter 1. Understanding ISDN and the Express 4110/4120
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Express 4110/4120 User Manual
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tion/IP/NAT
menu that allows incoming HTTP, FTP, and mail server
requests from the Internet to be translated and forwarded to this address
on the user network.
Configuration
The Express 4110/4120 is configured using a menu-based interface. This
interface can be accessed via the maintenance port using any asynchro-
nous VT 100 terminal or personal computer running a terminal emula-
tion program, or via the LAN using a Telnet client program. To use the
Telnet interface, the Express 4110/4120 must first have an IP address pro-
grammed into it via the maintenance port. The factory default is 10.0.0.1.
Security
Security on network devices is a major concern for almost anyone with a
network. The Express 4110/4120 provides many tools for securing the
local network from hostile users. Incoming calls can be authenticated
using passwords and Caller ID. A RADIUS client can also be used.
The Telnet configuration can also be protected using the same authentica-
tion methods. Each menu item in the Express 4110/4120 has a security
level associated with it. A Telnet session is assigned a privilege level
which determines which menu items are accessible to the Telnet client.
See “Security Levels” on page 3-7 (in Chapter 3) for more information on
menu security levels.
Filters can be defined to prevent certain addresses or protocols from
being transferred from LAN-to-WAN, WAN-to-LAN, or WAN-to-WAN.
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Страница 24: ...List of Tables xiv Express 4110 4120 User Manual 61200176L3 1...
Страница 50: ...Chapter 1 Understanding ISDN and the Express 4110 4120 1 20 Express 4110 4120 User Manual 61200176L3 1...
Страница 56: ...Chapter 2 Installation 2 6 Express 4110 4120 User Manual 61200176L3 1...
Страница 146: ...Chapter 5 Specifications 5 4 Express 4110 4120 User Manual 61200176L3 1...
Страница 172: ...Appendix B Log Messages B 22 Express 4110 4120 User Manual 61200176L3 1...
Страница 176: ...Appendix C SNMP C 4 Express 4110 4120 User Manual 61200176L3 1...
Страница 194: ...Acronyms Acronyms 4 Express 4110 4120 User Manual 61200176L3 1...
Страница 204: ...Index Index 10 Express 4110 4120 User Manual 61200176L3 1...