D-Link DFL-200 manual Proposal Lists, IKE Proposal List, IPSec Proposal List

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Proposal Lists

To agree on the VPN connection parameters, a negotiation process is performed. As the result of the negotiations, the IKE and IPSec security associations (SAs) are established. As the name implies, a proposal is the starting point for the negotiation. A proposal defines encryption parameters, for instance encryption algorithm, life times etc, that the VPN gateway supports.

There are two types of proposals, IKE proposals and IPSec proposals. IKE proposals are used during IKE Phase-1 (IKE Security Negotiation), while IPSec proposals are using during IKE Phase-2 (IPSec Security Negotiation).

A Proposal List is used to group several proposals. During the negotiation process, the proposals in the proposal list are offered to the remote VPN gateway one after another until a matching proposal is found.

IKE Proposal List

Cipher – Specifies the encryption algorithm used in this IKE proposal. Supported algorithms are AES, 3DES, DES, Blowfish, Twofish and CAST128.

Hash – Specifies the hash function used to calculate a check sum that reveals if the data packet is altered while being transmitted. MD5 and SHA1 are supported algorithms.

Life Times – Specifies in KB or seconds when the security associations for the VPN tunnel need to be re-negotiated.

IPSec Proposal List

Cipher – Specifies the encryption algorithm used in this IPSec proposal. Supported algorithms are AES, 3DES, DES, Blowfish, Twofish and CAST128.

HMAC – Specifies the hash function used to calculate a check sum that reveals if the data packet is altered while being transmitted. MD5 and SHA1 are supported algorithms.

Life Times – Specifies in KB or seconds when the security associations for the VPN tunnel need to be re-negotiated.

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Contents Link DFL-200 Contents VPN Servers 111 122 125Features and Benefits Access Control supportedIntroduction Introduction to FirewallsIntroduction to Local Area Networking LEDs Physical ConnectionsPackage Contents System RequirementsResetting the DFL-200 Managing D-Link DFL-200Administration Settings Administrative AccessAdd ping access to an interface Add Admin access to an interfaceAdd Read-only access to an interface Enable Snmp access to an interfaceInterfaces 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 PasswordWAN Interface Settings Using Pptp MTU Configuration WAN Interface Settings Using BigPondPassword The password supplied to you by your ISP 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 boxFirewall PolicyPolicy modes Action TypesSource and Destination Filter Service FilterSchedule Intrusion Detection / Prevention Add a new policyConfigure Intrusion Detection Enable the Delete policy checkboxEnable the Intrusion Detection / Prevention checkbox Change order of policyConfigure Intrusion Prevention Port mapping / Virtual Servers Add a new mappingEnable the Delete mapping checkbox Delete mappingUsers DFL-200 Radius SupportEnable User Authentication via Http / Https Enable Radius SupportEnable the Change password checkbox Change User PasswordAdd User Enable the Delete user checkbox Delete UserSchedules Add new recurring scheduleServices Adding TCP, UDP or TCP/UDP ServiceGrouping Services Adding IP ProtocolProtocol-independent settings VPN Introduction to IPSecIntroduction to L2TP Introduction to PptpPoint-to-Point Protocol Authentication Protocols MPPE, Microsoft Point-To-Point EncryptionAuthentication protocol L2TP/PPTP ClientsAuthentication Protocol Introduction chapter L2TP/PPTP ServersMppe encryption VPN between two networks Creating a LAN-to-LAN IPSec VPN TunnelVPN between client and an internal network Creating a Roaming Users IPSec VPN TunnelAdding a L2TP/PPTP VPN Client Adding a L2TP/PPTP VPN ServerVPN Advanced Settings IKE Proposal List Proposal ListsIPSec Proposal List Certificates Trusting CertificatesLocal identities Certificates of remote peersIdentities Content Filtering Active content handlingEdit the URL Global Whitelist Edit the URL Global Blacklist Active content handling Dhcp Server Settings ServersEnable Dhcp Server Enable Dhcp RelayDisable Dhcp Server/Relayer Enable by checking the Use built-in Dhcp Server boxEnable DNS Relayer DNS Relayer SettingsEnable by checking the Enable DNS Relayer box Disable DNS Relayer Tools PingDynamic DNS Add Dynamic DNS SettingsPing Example Exporting the DFL-200’s Configuration BackupRestoring the DFL-200’s Configuration Restart/Reset Restarting the DFL-200Restoring system settings to factory defaults Page Upgrade Firmware UpgradeUpgrade IDS Signature-database System StatusCPU Load Interfaces VPN Connections Click Connections below it. a window willDhcp Server Logging How to read the logs Usage eventsDrop events Conn eventsOpen Example Close ExampleStep by step guides LAN-to-LAN VPN using IPsec LAN IP 192.168.4.1, Subnet maskEnable Automatically add a route for the remote network Remote Net 192.168.1.0/24LAN IP 192.168.1.1, Subnet mask Local net 192.168.1.0/24Remote Net 192.168.4.0/24 LAN-to-LAN VPN using Pptp Username BranchOffice Click Global policy parameters 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 Setup interfaces, System-Interfaces WAN IP193.0.2.20 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 serverSelect 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 104 Select Do not dial the initial connection and click Next Page Click Properties Page Name the new user HomeUser Enter password Retype password Page Windows XP client and L2TP server 112 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 Appendixes Appendix a Icmp Types and CodesPage Appendix B Common IP Protocol Numbers ESPLimited Warranty What Is Not Covered Wichtige Sicherheitshinweise CE Mark Warning WarnungAdvertencia de Marca de la CE AttenzioneVcci Warning Offices Singapore D-LINK International 132

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