More secure LAN-to-LAN VPN solution | D-Link DFL-700 instruction

A more secure LAN-to-LAN VPN solution

Go get a more secure solution, policies should be created instead of allowing all traffic between the two offices. The following steps will show how to enable some common services. In this example we have a mail server, ftp server and a web server (intranet) in the main office that we want to access from the branch office.

Settings for Branch office

1.Setup policies for the new tunnel, Firewall->Policy:Click Global policy parameters

Disable Allow all VPN traffic: internal->VPN, VPN->internal and VPN->VPN Click Apply

2.Now is it possible to create policies for the VPN interfaces. Select from LAN to toMainOffice and click Show.

3.Click Add new to create the first rule

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D-Link DFL-700 manual More secure LAN-to-LAN VPN solution

Contents

Link DFL-700 Contents Firewall Servers Status 132 129 Access Control supported Features and BenefitsIntroduction Introduction to Firewalls Introduction to Local Area Networking Physical Connections LEDs System Requirements Package Contents Managing D-Link DFL-700 Resetting the DFL700 Administrative Access Administration Settings Add Admin access to an interface Add ping access to an interface Enable Snmp access to an interface Add Read-only access to an interface Change IP of the LAN or DMZ interface SystemInterfaces IP Address The IP address of the WAN interface. This is WAN Interface Settings Using Static IPWAN Interface Settings Using Dhcp Password WAN Interface Settings Using PPPoE WAN Interface Settings Using Pptp Traffic Shaping WAN Interface Settings Using BigPondPassword The password supplied to you by your ISP MTU Configuration Routing Go to System and Routing Add a new Static RouteRemove a Static Route Logging Enable E-mail alerting for ISD/IDP events Enable LoggingEnable Audit Logging Page Time Setting time and date manually Using NTP to sync timeChanging time zone Checking the Set the system time box Policy FirewallPolicy modes Action Types Source and Destination Filter Service FilterSchedule Intrusion Detection / Prevention Traffic Shaping Add a new policy Enable the Delete policy checkbox Configure Intrusion DetectionEnable the Intrusion Detection / Prevention checkbox Change order of policy Configure Intrusion Prevention Add a new mapping Port mapping / Virtual Servers Delete mapping Enable the Delete mapping checkbox Add Administrative User Administrative users Enable the Change password checkbox Change Administrative User Access levelChange Administrative User Password Enable the Delete user checkbox Delete Administrative User DFL-700 Radius Support Users Enable Radius Support Enable User Authentication via Http / Https Add User Change User Password Delete User Add new recurring schedule Schedules Adding TCP, UDP or TCP/UDP Service Services Adding IP Protocol Grouping Services Protocol-independent settings Introduction to IPsec VPN Point-to-Point Protocol Introduction to PptpIntroduction to L2TP MPPE, Microsoft Point-To-Point Encryption Authentication Protocols L2TP/PPTP Clients Authentication protocol L2TP/PPTP Servers Authentication Protocol Introduction chapter Mppe encryption Creating a LAN-to-LAN IPSec VPN Tunnel VPN between two networks Creating a Roaming Users IPSec VPN Tunnel VPN between client and an internal network Adding a L2TP/PPTP VPN Server Adding a L2TP/PPTP VPN Client VPN Advanced Settings IPSec Proposal List Proposal ListsIKE Proposal List Trusting Certificates CertificatesLocal identities Certificates of remote peers Identities Certificate Authorities Active content handling Content Filtering Edit the URL Global Whitelist Edit the URL Global Blacklist Active content handling Servers Dhcp Server Settings Enable Dhcp Relay Enable Dhcp ServerDisable Dhcp Server/Relayer Enable by checking the Use built-in Dhcp Server box Enable by checking the Enable DNS Relayer box DNS Relayer SettingsEnable DNS Relayer Disable DNS Relayer Ping Example ToolsPing Dynamic DNS Add Dynamic DNS Settings Restoring the DFL-700’s Configuration BackupExporting the DFL-700’s Configuration Restarting the DFL-700 Restart/ResetRestoring system settings to factory defaults Page Upgrade IDS Signature-database UpgradeUpgrade Firmware CPU Load StatusSystem Interfaces VPN Connections Dhcp Server Users Usage events How to read the logsDrop events Conn events Close Example Open Example Step by step guides Local net 192.168.4.0/24 LAN-to-LAN VPN using IPsecLAN IP 192.168.4.1, Subnet mask Remote Net 192.168.1.0/24 Enable Automatically add a route for the remote network Local net 192.168.1.0/24 LAN IP 192.168.1.1, Subnet mask 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 Under Users in local database click Add new Select Local databasePage 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 Windows XP client and Pptp server Settings for the Windows XP client 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 Select HTTP/HTML Content Filtering in the ALG dropdown Firewall-ServicesPage Page Intrusion detection and prevention Page Check Enable E-mail alerting for IDS/IDP events Traffic shaping Limit bandwidth to a service Guarantee bandwidth to a service Page Appendix a Icmp Types and Codes AppendixesPage ESP Appendix B Common IP Protocol Numbers Limited Warranty What Is Not Covered Wichtige Sicherheitshinweise Warnung CE Mark WarningAdvertencia de Marca de la CE Attenzione Vcci Warning Offices 138 Page 140