SMC Networks SMCBR18VPN manual

Page 72

TCP - Transmission Control Protocol - TCP and UDP (User Datagram Protocol) are the two transport protocols in TCP/IP. TCP ensures that a message is sent accurately and in its entirety. However, for real-time voice and video, there is really no time or reason to correct errors, and UDP is used instead.

UDP - User Datagram Protocol - A protocol within the TCP/IP protocol suite that is used in place of TCP when a reliable delivery is not required. For example, UDP is used for real-time audio and video traffic where lost packets are simply ignored, because there is no time to retransmit. If UDP is used and a reliable delivery is required, packet sequence checking and error notification must be written into the applications.

VPN - Virtual Private Network that actually exists within a public network. This consists of a point- to-point tunnel through which users can send and receive data. The data packets are encrypted to provide for a true private connection to the endpoint (i.e. - corporate network). These packets cannot be decrypted without the correct encryption keys. Once the VPN tunnel is established, the client machine is authenticated and registered on the network. Given the proper privileges, it can then communicate directly with other machines as if it were actually on that local network.

Image 72
Contents Page Copyright TrademarksCompliances Important Safety Notices EC Conformance Declaration Class BEquipment Checklist System RequirementsFunctions and Features Panel Layout Function Color Status DescriptionHardware Installation Network Settings and Software InstallationDefault Settings Port Type DescriptionInstalling TCP/IP Windows 95/98/Me Setting up TCP/IP Windows 95/98/MeWindows 2000/XP Windows NTConfiguring a Macintosh Computer Obtaining an IP Address Windows 95/98/MeVerifying Your TCP/IP Connection PingPinging 192.168.2.1 with 32 bytes of data Request timed out Configuring Your Broadband VPN Router Browser ConfigurationInternet Explorer 5 or above For Windows Internet Explorer For MacintoshSetup Wizard Time Zone Broadband TypeCable Modem Fixed-IP xDSLPPPoE xDSL Page Pptp BigPondL2TP Dial-UpPage Advanced Setup System Time Zone Password Settings Remote ManagementSyslog Server Advanced Setup WAN Dynamic IP PPPoE Static IP Dial Up Page Advanced Setup LAN Advanced Setup NAT 7.7.1 Virtual Server Service Port Server IP Enable Special ApplicationsAdvanced Setup Firewall 7.8.1 Network Filters Virtual ComputerURL Blocking MAC Filter Schedule Rule Advanced DMZAdvanced Setup VPN 7.9.1 IPSec Tunnel IKE Proposal Page IPSec Proposal Dynamic VPN PPTP/L2TP Server Advanced Setup Snmp Advanced Setup RoutingPage Advanced Setup Miscellaneous Advanced Setup Display StatusDdns Dynamic DNS UPnP Universal Plug-and-Play ToolsStatus Local Security Policy Settings Page Create Two IP Filter Lists PC Router / Router PC Page Page Page Page Page Page Page Configuring the IKE Properties Page Example IPSec VPN Configuration IKEPage 3DES ESP Troubleshooting Am having problems establishing a PPPoE xDSL WAN connection IPSec VPN ConfigurationCan I use this router with AOL DSL? Forgot my password and can no longer log into the router Upgrading the firmwareTechnical Specifications Input Power 5V 2A Operating Temperature Terminology Page Page Page