D-Link DFL-200 manual Appendixes, Appendix a Icmp Types and Codes

Page 122

Appendixes

Appendix A: ICMP Types and Codes

The Internet Control Message Protocol (ICMP) has many messages that are identified by a “type” field; many of these ICMP types have a "code" field. Here we list the types with their assigned code fields.

Type	Name	Code	Description			Reference

0	Echo Reply	0	No Code			RFC792
3	Destination Unreachable	0	Net Unreachable			RFC792
		1	Host Unreachable			RFC792
		2	Protocol Unreachable			RFC792
		3	Port Unreachable			RFC792
		4	Fragmentation	Needed	and	RFC792
			Don't Fragment was Set
		5	Source Route Failed			RFC792
		6	Destination Network Unknown			RFC792
		7	Destination Host Unknown			RFC792
		8	Source Host Isolated			RFC792
		9	Communication		with	RFC792
			Destination	Network	is
			Administratively Prohibited
		10	Communication		with	RFC792
			Destination	Host	is
			Administratively Prohibited
		11	Destination	Network		RFC792
			Unreachable	for Type	of
			Service
		12	Destination Host Unreachable			RFC792
			for Type of Service
		13	Communication			RFC1812
			Administratively Prohibited
		14	Host Precedence Violation			RFC1812
		15	Precedence cutoff in effect			RFC1812
4	Source Quench	0	No Code			RFC792

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Contents Link DFL-200 Contents VPN Servers 111 122 125Introduction Features and BenefitsAccess Control supported 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 interfaceChange 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 WAN Interface Settings Using PPPoE PasswordWAN Interface Settings Using Pptp Password The password supplied to you by your ISP WAN Interface Settings Using BigPondMTU 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 Changing time zone Using NTP to sync timeSetting time and date manually Checking the Set the system time boxPolicy modes FirewallPolicy Action TypesSchedule Service FilterSource and Destination Filter Intrusion Detection / Prevention Add a new policyEnable the Intrusion Detection / Prevention checkbox Configure Intrusion DetectionEnable the Delete policy 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 SupportAdd User Change User PasswordEnable the Change password checkbox 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 IPSecPoint-to-Point Protocol Introduction to PptpIntroduction to L2TP 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 IPSec Proposal List Proposal ListsIKE Proposal List Local identities CertificatesTrusting Certificates Certificates of remote peersIdentities Content Filtering Active content handlingEdit the URL Global Whitelist Edit the URL Global Blacklist Active content handling Dhcp Server Settings ServersDisable Dhcp Server/Relayer Enable Dhcp ServerEnable Dhcp Relay Enable by checking the Use built-in Dhcp Server boxEnable by checking the Enable DNS Relayer box DNS Relayer SettingsEnable DNS Relayer Disable DNS Relayer Tools PingPing Example Add Dynamic DNS SettingsDynamic DNS Restoring the DFL-200’s Configuration BackupExporting the DFL-200’s Configuration Restart/Reset Restarting the DFL-200Restoring system settings to factory defaults Page Upgrade IDS Signature-database UpgradeUpgrade Firmware CPU Load StatusSystem Interfaces VPN Connections Click Connections below it. a window willDhcp Server Logging Drop events How to read the logsUsage 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 Advertencia de Marca de la CE CE Mark WarningWarnung AttenzioneVcci Warning Offices Singapore D-LINK International 132

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