Lancom Systems 1711, 821, 1621 manual Instructions for WEBconfig, Network without Dhcp server

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LANCOM 821 ADSL/ISDN – LANCOM 1621 ADSL/ISDN – LANCOM 1711 VPN

Chapter 3: Basic configuration

Section ’TCP/IP settings to workstation PCs’ auf Seite 41 will describe the settings required for the individual workstations in the LAN.

3.3Instructions for WEBconfig

To configure the router with WEBconfig you must know how to address it in the LAN. The reaction of the devices, as well as their accessibility for configu- ration via web browser is dependent on whether a DHCP server and a DNS server are already active in the LAN, and whether these two server processes exchange the assignment of IP addresses to symbolic names within the LAN between each other.

After powered on, unconfigured LANCOM devices check first, whether a DHCP server is already active in the LAN. Dependent on the situation, the device is able to switch on its own DHCP server or, alternatively, to activate its DHCP client mode. In this second operating mode, the device itself can obtain an IP address from a DHCP server already existing in the LAN.

Network without DHCP server

In a network without DHCP server, unconfigured LANCOM devices activate their own DHCP server service after starting, and assign appropriate IP addresses and gateway information to the other workstations within the LAN, provided that the workstations are set to obtain their IP address automatically (auto-DHCP). In this constellation, the device can be accessed with any web browser from each PC with activated auto-DHCP function through the name LANCOM or by its IP address 172.23.56.254.

If the configuration PC does not obtain its IP address from the LANCOM DHCP server, figure out the current IP address of this PC (with Start Execute cmd and command ipconfig at the prompt under Windows 2000 or Windows XP, with Start Execute cmd and the command winipcfg at the prompt under Windows Me and Windows 9x, or with the command ifconfig on the console under Linux). In this case, the LANCOM is reachable under the IP

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Contents Lancom 821 ADSL/ISDN Lancom 1621 ADSL/ISDN Lancom 1711 VPN Lancom Systems GmbH, Wuerselen Germany. All rights reserved Preface Security settingsThank you for placing your trust in this Lancom product Model variants Preface Contents Installation of the MS Windows fax service Sending a fax Providing dial-up accessLinking two networks Sending faxes with LancapiTroubleshooting Security checklistAppendix Introduction Access to a complete local network LANHow does Adsl work? AddressesIdeal for Internet surfers All services via a single cable-thanks to the splitterCode ADSL-over-ISDN or ADSL-over-POTS?Which use does VPN offer? Conventional network infrastructure Networking via the Internet Firewall Quality-of-Service / Traffic management Denial-of-Service ProtectionWhat does a router do? Areas of deployment for routers Bridgehead to the WANAt least one for WAN connections LAN to LAN coupling via VPN or IsdnWhat can your Lancom do? Remote access to the company network via VPN or IsdnConventional via Isdn WAN connection Configuration Package contents InstallationSystem preconditions Status displays Introducing LancomFront side Meanings of the LEDs Top panelLED remains lit green Online LED indicates the overall status of all WAN ports Flashing Power LED but no connection?Connection status of the WAN connection Connection status of the Adsl linkData traffic via the Adsl link Data traffic via the DSL connectionSeparate status display for both Isdn B channels Status of the four LAN ports in the integrated switchBack of the unit Hardware installation Using the included power adapter Adsl connector cable transparent plugsStarting Lancom setup Software installationWhich software should you install? 1 TCP/IP settings Basic configurationWhich information is necessary? Configure manually nevertheless? New LAN-fully automatic configuration possibleInformation required for manual TCP/IP configuration IP address and netmask for the LancomSettings for the DSL connection Configuration protectionSettings for the Isdn connection Enable Dhcp server?Start up LANconfig by clicking Start Programs Lancom Instructions for LANconfigLANconfig Connect charge protectionComplete the configuration with Finish Network without Dhcp server Instructions for WEBconfigNetwork with Dhcp server Starting the wizards in WEBconfigOr with a name as discribed above Basic configuration Entering the password in the web browser IP address assignment via the Lancom default TCP/IP settings to workstation PCsIP address assignment via a separate Dhcp server Manual IP address assignmentBasic configuration Does the setup wizard know your Internet provider? Setting up Internet accessAdditional information for unknown Internet providers Protocol PPPoE, Pptp or Plain Ethernet IPoE User name and passwordAdditional connection options Dynamic channel bundling Isdn onlyLANconfig Quick access to the setup wizards Tools Setup WizardComplete the configuration with Apply Linking two networks Always configure both sidesSecurity aspects General information What information is necessary?Isdn Settings for the TCP/IP router DNS access to the remote LAN Settings for the IPX routerExtranet VPN Settings for NetBIOS routing Perform the configuration on both routers, one at a time Ping quick testing for TCP/IP connections Which information is required? Providing dial-up accessCoupling Entry Isdn calling line identity CLI Settings for TCP/IPWAN Settings for IPXDial-up via VPN Settings for the dial-in computerDial-up via Isdn Instructions for LANconfig Instructions for WEBconfig Sending faxes with Lancapi Lancom CD Installation of the Lancom Capi fax modemSelect the option Printers and Faxes from the control panel Installation of the MS Windows fax serviceSending a fax Send a fax with the MS Windows fax serviceSend a fax with any given office application Sending faxes with Lancapi Security settings wizard Security settingsWizard for LANconfig Firewall wizard Wizard for WEBconfigConfiguration under WEBconfig Security checklistRules Have you permitted remote configuration? Have you assigned a password for the configuration?Have you activated the Firewall? Do you make use of a ’Deny All’ Firewall strategy?Have you closed critical ports with filters? Is your saved Lancom configuration stored in a safe place?Problems with the cabling? TroubleshootingNo WAN connection is established DSL data transfer is slowUnwanted connections under Windows XP Cable testingIncreasing the TCP/IP window size under Windows LAN statisticsTroubleshooting Appendix Performance data and specificationsATM Adsl interface Contact assignmentPin RJ45 socket ISDN-S0interface Ethernet WAN interface Lancom 1711 VPNPin RJ45 socket, corresponding to ISO 8877, EN CE declaration of conformity Configuration interface OutbandEthernet interfaces 10/100Base-T Pin mini-DIN socketNumerics IndexHardware installation 1TR6 Caller ID FirmSafe IPX conventions Flat rate IPX router SettingsInstallation Connection Connector cable Configuration port ChannelNetBIOS Power adapter 21, 27Security aspects Server Setup Specify MSN LAN to LAN coupling 17, 18, 19, 34Online Power Settings Stateful Inspection TelephoneVoltage switch WAN data VPN client WAN status Switch System preconditions Connector cable WAN connection
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1621, 1711, 821 specifications

Lancom Systems is a notable player in the networking solutions market, and its range of routers, specifically the 821, 1621, and 1711 models, showcases the company's commitment to delivering robust, high-quality products for various enterprise needs. Each model brings distinct features, making them suitable for different environments and operational demands.

The Lancom 821 is particularly designed for small to medium-sized enterprises (SMEs) requiring reliable internet connectivity and secure networking. This router supports various VPN technologies, ensuring secure data transmission across the organization. Equipped with advanced firewall capabilities, the 821 can handle multiple connections while protecting against potential cyber threats. Its support for IPv6 enhances compatibility with future networks, making it a long-term investment. The device’s manageable architecture allows for remote access and troubleshooting, reducing the need for on-site IT interventions.

On the other hand, the Lancom 1621 is tailored for larger organizations or those with more extensive networking demands. This model offers enhanced throughput and is capable of managing large volumes of traffic without compromising performance. It features a variety of WAN connection options, including DSL, LTE, and fiber, allowing businesses to choose the best solution for their requirements. The 1621 also incorporates sophisticated Quality of Service (QoS) settings, which prioritize critical applications to ensure optimal performance during peak times. Built-in redundancy features enhance reliability, making it an excellent choice for mission-critical applications.

The Lancom 1711 takes networking capabilities a step further, targeting enterprises with even more complex needs. It boasts advanced routing and switching features, making it suitable for enterprise-grade deployments. The 1711 supports enterprise WLAN management, allowing seamless integration with wireless access points. Its robust performance over WAN connections enables the deployment of various real-time applications, such as voice over IP (VoIP) and video conferencing, without latency issues. Security is a top priority, with features including an IPSec VPN and integrated threat detection to safeguard organizational data.

In summary, the Lancom 821, 1621, and 1711 routers serve as versatile tools for businesses, each designed with distinct capabilities to meet specific networking needs. Their strengths lie in their security features, support for various connection types, and reliable performance under heavy loads. With these devices, organizations can ensure that their network infrastructure not only meets current demands but is also poised for future growth.
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