Proposal Lists, IKE Proposal List | D-Link DFL-700 specification

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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D-Link DFL-700 manual Proposal Lists, IKE Proposal List, IPSec Proposal List

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 System InterfacesChange IP of the LAN or DMZ interface WAN Interface Settings Using Static IP WAN Interface Settings Using DhcpIP Address The IP address of the WAN interface. This is Password WAN Interface Settings Using PPPoE WAN Interface Settings Using Pptp WAN Interface Settings Using BigPond Password The password supplied to you by your ISPTraffic Shaping MTU Configuration Routing Add a new Static Route Remove a Static RouteGo to System and Routing Logging Enable Logging Enable Audit LoggingEnable E-mail alerting for ISD/IDP events 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 Change Administrative User Access level Change Administrative User PasswordEnable the Change password checkbox 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 Introduction to Pptp Introduction to L2TPPoint-to-Point Protocol 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 Proposal Lists IKE Proposal ListIPSec 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 DNS Relayer Settings Enable DNS RelayerEnable by checking the Enable DNS Relayer box Disable DNS Relayer Tools PingPing Example Dynamic DNS Add Dynamic DNS Settings Backup Exporting the DFL-700’s ConfigurationRestoring the DFL-700’s Configuration Restart/Reset Restoring system settings to factory defaultsRestarting the DFL-700 Page Upgrade Upgrade FirmwareUpgrade IDS Signature-database Status SystemCPU Load Interfaces VPN Connections Dhcp Server Users Usage events How to read the logsDrop events Conn events Close Example Open Example Step by step guides LAN-to-LAN VPN using IPsec LAN IP 192.168.4.1, Subnet maskLocal net 192.168.4.0/24 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