Servers, Dhcp Server Settings | D-Link DFL-700 guide

Servers

DHCP Server Settings

The DFL-700 contains a DHCP server; DHCP (Dynamic Host Configuration Protocol) is a protocol that lets network administrators to automatically assign IP numbers to computers on

anetwork. The DFL-700 DHCP Server helps to minimize the work necessary to administer a network, as there is no need for another server running DHCP Server software.

The DFL-700 DHCP Server only implements a subset of the DHCP protocol necessary to serve a small network, these are:

•IP address

•Netmask

•Subnet

•Gateway address

•DNS Servers

•WINS Servers

•Domain name

The DFL-700 DHCP

Server assigns and manages IP addresses from specified address pools within the firewall to the DHCP clients.

Note: Leases are remembered over a re-configure or reboot of the firewall.

The DFL-700 also includes a DHCP Relayer. A DHCP relayer is a form of gateway between a DHCP Server and its users. The relayer intercepts DHCP queries from the users and forwards them to a DHCP server while setting up dynamic routes based on leases. This enables the firewall to keep an accurate routing table based on active users and protects the DHCP server to some degree among other things.

Note: There can only be one DHCP Server or DHCP Relay configured per interface.

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D-Link DFL-700 manual Servers, Dhcp Server Settings

Contents

Link DFL-700 Contents Firewall Servers Status 129 132 Features and Benefits Access Control supportedIntroduction Introduction to Firewalls Introduction to Local Area Networking LEDs Physical Connections Package Contents System Requirements Resetting the DFL700 Managing D-Link DFL-700 Administration Settings Administrative Access Add ping access to an interface Add Admin access to an interface Add Read-only access to an interface Enable Snmp access to an interface Interfaces SystemChange IP of the LAN or DMZ interface WAN Interface Settings Using Dhcp WAN Interface Settings Using Static IPIP Address The IP address of the WAN interface. This is WAN Interface Settings Using PPPoE Password WAN Interface Settings Using Pptp Password The password supplied to you by your ISP WAN Interface Settings Using BigPondTraffic Shaping MTU Configuration Routing Remove a Static Route Add a new Static RouteGo to System and Routing Logging Enable Audit Logging Enable LoggingEnable E-mail alerting for ISD/IDP events Page Time Using NTP to sync time Setting time and date manuallyChanging time zone Checking the Set the system time box Firewall PolicyPolicy modes Action Types Service Filter Source and Destination FilterSchedule Intrusion Detection / Prevention Traffic Shaping Add a new policy Configure Intrusion Detection Enable the Delete policy checkboxEnable the Intrusion Detection / Prevention checkbox Change order of policy Configure Intrusion Prevention Port mapping / Virtual Servers Add a new mapping Enable the Delete mapping checkbox Delete mapping Administrative users Add Administrative User Change Administrative User Password Change Administrative User Access levelEnable the Change password checkbox Delete Administrative User Enable the Delete user checkbox Users DFL-700 Radius Support Enable User Authentication via Http / Https Enable Radius Support Change User Password Add User Delete User Schedules Add new recurring schedule Services Adding TCP, UDP or TCP/UDP Service Grouping Services Adding IP Protocol Protocol-independent settings VPN Introduction to IPsec Introduction to L2TP Introduction to PptpPoint-to-Point Protocol Authentication Protocols MPPE, Microsoft Point-To-Point Encryption Authentication protocol L2TP/PPTP Clients Authentication Protocol Introduction chapter L2TP/PPTP Servers Mppe encryption VPN between two networks Creating a LAN-to-LAN IPSec VPN Tunnel VPN between client and an internal network Creating a Roaming Users IPSec VPN Tunnel Adding a L2TP/PPTP VPN Client Adding a L2TP/PPTP VPN Server VPN Advanced Settings IKE Proposal List Proposal ListsIPSec Proposal List Certificates Trusting CertificatesLocal identities Certificates of remote peers Certificate Authorities Identities Content Filtering Active content handling Edit the URL Global Whitelist Edit the URL Global Blacklist Active content handling Dhcp Server Settings Servers Enable Dhcp Server Enable Dhcp RelayDisable Dhcp Server/Relayer Enable by checking the Use built-in Dhcp Server box Enable DNS Relayer DNS Relayer SettingsEnable by checking the Enable DNS Relayer box Disable DNS Relayer Ping ToolsPing Example Add Dynamic DNS Settings Dynamic DNS Exporting the DFL-700’s Configuration BackupRestoring the DFL-700’s Configuration Restoring system settings to factory defaults Restart/ResetRestarting the DFL-700 Page Upgrade Firmware UpgradeUpgrade IDS Signature-database System StatusCPU Load Interfaces VPN Connections Dhcp Server Users How to read the logs Usage eventsDrop events Conn events Open Example Close Example Step by step guides LAN IP 192.168.4.1, Subnet mask LAN-to-LAN VPN using IPsecLocal net 192.168.4.0/24 Enable Automatically add a route for the remote network Remote Net 192.168.1.0/24 LAN IP 192.168.1.1, Subnet mask Local net 192.168.1.0/24 Remote Net 192.168.4.0/24 LAN-to-LAN VPN using Pptp Username BranchOffice Click Activate and wait for the firewall to restart Settings for Main office Page Select Local database Under Users in local database click Add newPage LAN-to-LAN VPN using L2TP Username BranchOffice Check Use IPsec encryption Settings for Main office Page Select Local database Under Users in local database click Add new More secure LAN-to-LAN VPN solution Page Page Settings for Main office Settings for the Windows XP client Windows XP client and Pptp server Select Connect to the network at my workplace and click Next Select Virtual Private Network connection and click Next Name the connection MainOffice and click Next 108 Select Do not dial the initial connection and click Next Page Click Properties Page Setup interfaces, System-Interfaces WAN IP193.0.2.20 Page Windows XP client and L2TP server 116 Settings for Main office Page Content filtering Firewall-Services Select HTTP/HTML Content Filtering in the ALG dropdownPage Page Intrusion detection and prevention Page Check Enable E-mail alerting for IDS/IDP events Limit bandwidth to a service Traffic shaping Guarantee bandwidth to a service Page Appendixes Appendix a Icmp Types and CodesPage Appendix B Common IP Protocol Numbers ESP Limited Warranty What Is Not Covered Wichtige Sicherheitshinweise CE Mark Warning WarnungAdvertencia de Marca de la CE Attenzione Vcci Warning Offices 138 Page 140