3Com 3CR856-95 manual Nat

Page 95

Internet settings blocking access 48 configuring 38 DHCP 41

PPPoE 42

static address 40 wizard 26

inventory 11 IP address 73 IP defined 89 IPSec

defined 89 IPSec Routes

editing 60 ISP defined 89 ISP Information 85

L

L2TP 53 editing 59

LAN defined 89

LAN Ethernet port 13 LAN settings

configuring 35 wizard 30

LAN status LED 12 LED

alert 12

cable/DSL status 13 LAN status 12 power 12

loading Gateway configuration 62 local area network 89

login screen 23

logs

viewing 64

M

MAC address 89 Macintosh OS 8.5/9.x

setting up 20 main menu

accessing 33 media access control 89 multiple hosts 51

N

NAT

configuring 43 defined 89

network address remote 57

network address translation 43, 89 network defined 90

network interface card defined 90 NIC defined 90

notice board 34 NTP server 62

O

one-to-many NAT configuring 44

one-to-one NAT configuring 45

95

Image 95
Contents Page United States Government Legend 3Com Corporation Bayfront Plaza Santa Clara, CaliforniaContents IP Addressing TroubleshootingUsing Discovery Index Regulatory Notices Safety InformationEnd User Software Licence Agreement ISP InformationPage Icon Description About this GuideNaming Convention ConventionsProduct Registration Related DocumentationFeedback about this User Guide OfficeConnect Cable/DSL Secure Gateway Introducing the Officeconnect CABLE/DSL Secure GatewayCable/DSL Secure Gateway Advantages Example Network Using a Cable/DSL Secure GatewayMinimum System and Component Requirements Package ContentsFlashing slowly Two seconds on, two seconds off Power LED GreenFront Panel Alert LED OrangeEthernet Cable/DSL port Power Adapter socketRear Panel Cable/DSL Status LEDPage Positioning the Gateway Installing the GatewayBefore you Install your Gateway IntroductionStatic PPPoEConnecting the Cable/DSL Secure Gateway Powering Up the GatewayPage Windows 2000, XP Setting UP Your ComputersObtaining an IP Address Automatically Macintosh OS 8.5 Disabling PPPoE and Pptp Client SoftwareWindows 95, 98, ME Internet Properties Disabling Web ProxyPage Accessing the Wizard Running the Setup WizardWelcome Screen Setting the PasswordTo set the Gateway to World Time UTC Setting the Time ZoneInternet Settings Auto-Configuration SettingsDynamic IP Address Mode Static IP ModeConnection, use the following procedure PPPoE ModePptp Screen Pptp ModeActivating Dhcp Choosing your LAN SettingsViewing the Summary Dhcp Server Setup ScreenPage Option Tabs Gateway ConfigurationNavigating Through the Gateway Configuration Pages Main MenuWelcome Screen Password ScreenChanging the LAN Settings LAN SettingsSetup Wizard LAN IP SettingsChanging the Dhcp Server Settings Dhcp Clients Screen Dhcp Clients ListStatic IP Address DSL or Cable Internet SettingsConnection to ISP Screen Connection to ISPStatic Address Setup Screen Configuring a Static IP AddressDynamic Address Setup Screen Configuring a Dynamic IP AddressPPPoE Setup Screen Configuring a PPPoE connectionConfiguring a Pptp connection Setting up NATOne-to-Many and One-to-One NAT Setting up One-to-Many NATVirtual Servers Menu Configuring the FirewallSetting up One-to-One NAT Creating a Virtual DMZ Creating a Virtual ServerPC Privileges Virtual Servers Settings ScreenTo assign different access rights for different computers To use access control for all computersSpecial Applications Screen Special ApplicationsCreating Custom Special Applications Adding and Editing Special ApplicationsCustom Special Applications Setup Screen Advanced Advanced Settings ScreenIPSec Configuration Configuring VPNsSetting the VPN Mode Address Pool for Pptp and L2TP clients field enter L2TP ConfigurationViewing VPN Connections Pptp ConfigurationAdding and Editing VPN Connections IPSec Connections using Gateway to Gateway IPSec Connections using Remote User AccessIPSec Connection Gateway to Gateway Connection Name field enter headsales L2TP over IPSec ConnectionsPptp Connections Editing IPSec RoutesRestart Accessing the System ToolsTime Zone Loading and Saving the Gateway ConfigurationUpgrading the Firmware of your Gateway Upgrade ScreenStatus Screen Viewing Status and LogsObtaining Support and Feedback for your Gateway Log Settings ScreenFeedback Screen Basic Connection Checks TroubleshootingBrowsing to the Gateway Configuration Screens Forgotten Password Connecting to the InternetHttp//192.168.1.1 Alert LEDDoes the Gateway support virtual private networks VPNs? Frequently Asked QuestionsRunning the Discovery Application Using DiscoveryWindows Installation 95/98/2000/Me/NT Discovery Finish Screen Type One IP AddressingInternet Protocol Suite IP Addresses and Subnet MasksType Two How does a Device Obtain an IP Address and Subnet Mask?Dhcp Addressing Static AddressingAuto-IP Addressing Private IP AddressesPage Standards Technical SpecificationsOperating Systems Cable SpecificationsSystem Requirements Ethernet PerformanceWichtige Sicherheitshinweise Safety InformationImportant Safety Information Consignes importantes de sécurité Page Page 3Com Corporation END User Software Licence AgreementPage Information Regarding Popular ISPs Internet Characteristics Popular ISPs Connection TypesISP Information Page Glossary Fast Ethernet DSL modemEthernet Ethernet AddressMAC Address IP AddressIPSec L2TP over IPSecProtocol SwitchNetwork Network Interface Card NICWizard TrafficPage Numbers IndexIeee Ietf NAT Ping VPN Page FCC Statement Regulatory Notices100 Page DUA08569-5AAA02 Published November
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3CR856-95 specifications

The 3Com 3CR856-95 is a versatile networking device designed to meet the demands of small to medium-sized businesses. As a part of the 3Com OfficeConnect series, the 3CR856-95 combines switching, routing, and security features into a compact, integrated solution that enhances network performance and reliability.

One of the main features of the 3CR856-95 is its ability to support multiple network configurations. It operates as a router and switch simultaneously, offering six Ethernet ports for wired connections, while also integrating wireless capabilities. This allows businesses to connect various devices seamlessly, including computers, printers, and smartphones, providing flexibility and convenience in a modern office environment.

The device incorporates advanced technologies such as Quality of Service (QoS) which prioritizes network traffic to ensure that bandwidth-intensive applications like video conferencing and VoIP run smoothly. This feature is essential for maintaining productivity and communication efficiency in busy office settings. Additionally, the 3CR856-95 supports both IPv4 and IPv6 protocols, making it a future-proof solution as businesses transition to the newer Internet Protocol standard.

Security is a critical consideration for any networking equipment, and the 3CR856-95 addresses this with robust measures. It includes a built-in firewall that protects the network from external threats, along with support for Virtual Private Networks (VPN), allowing secure remote access for employees working from off-site locations. Furthermore, the device supports WPA2 encryption for wireless connections, safeguarding sensitive data transmitted over the network.

Another important characteristic of the 3CR856-95 is its user-friendly interface, which simplifies the setup and management of the network. The device features a web-based management console that allows network administrators to easily configure settings, monitor traffic, and troubleshoot issues from any internet-connected device. This accessibility saves time and reduces the complexity often associated with network management.

In summary, the 3Com 3CR856-95 is a robust and feature-rich networking solution tailored for small to medium-sized businesses. With its combination of switching, routing, and security features, it provides a reliable platform for facilitating seamless communication and connectivity. Its support for advanced technologies and user-friendly management interface makes it a smart choice for organizations looking to enhance their network infrastructure.