Bedienungsanleitung Sagem Fast 1500 (Seite 9 von 134) (Englisch)

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1 - Introduction

SAGEM F@st™ 1500 Reference Manual - 288053220-03

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• Shared IP Address

The SAGEM F@st

1500WG ADSL Router provides Internet access for up to 253 users via a

single shared IP address. Using only one ISP account, multiple users on your network can

browse the web at the same time.

• Virtual Server

If you have a fixed IP address, you can set the SAGEM F@st

1500WG ADSL Router to act as

a virtual host for network address translation. Remote users access various services at your site

using a constant IP address. Then, depending on the requested service (or port number), the

SAGEM F@st

1500WG ADSL Router can route the request to the appropriate server (at

another internal IP address). This secures your network from direct attack by hackers, and

provides more flexible management by allowing you to change internal IP addresses without

affecting outside access to your network.

• DMZ Host Support

Allows a networked computer to be fully exposed to the Internet.

This function is used when NAT and firewall security prevent an Internet application from

functioning correctly.

• Security

The SAGEM F@st

1500WG ADSL Router supports security features that deny Internet

access to specified users, or filter all requests for specific services that the administrator does

not want to serve. The SAGEM F@st

1500WG ADSL Router’s firewall also blocks common

hacker attacks, including IP Spoofing, Land Attack, Ping of Death, IP with zero length, Smurf

Attack, UDP port loopback, Snork Attack, TCP null scan, and TCP SYN flooding. WEP (Wired

Equivalent Privacy), SSID, and MAC filtering provide security over the wireless network.

• Virtual Private Network (VPN)

The SAGEM F@st

1500WG ADSL Router supports three of the most commonly used VPN

protocols - PPTP, L2TP, and IPSec. These protocols allow remote users to establish a secure

connection to their corporate network. If your service provider supports VPNs, then these

protocols can be used to create an authenticated and encrypted tunnel for passing secure data

over the Internet (i.e., a traditionally shared data network).

The VPN protocols supported by the SAGEM F@st

1500WG ADSL Router are briefly

described below:

• Point-to-Point Tunneling Protocol - Provides a secure tunnel for remote client access to a

PPTP security gateway. PPTP includes provisions for call origination and flow control

required by ISPs.

• L2TP merges the best features of PPTP and L2F - Like PPTP, L2TP requires that the ISP’s

routers support the protocol.

• IP Security - Provides IP network-layer encryption. IPSec can support large encryption

networks (such as the Internet) by using digital certificates for device authentication.

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