Lancom DSL Series Manual
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Contents
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LANCOM Wireless DSL – LANCOM Wireless ADSL Chapter 5: Linking two networks49EN5 Linking two networksWith the network interconnection (also known as LAN to LAN coupling) of theLANCOM Wireless DSL, two local networks are linked. The LAN to LAN cou-pling can be realized in principle in two different ways:Only LANCOM1811 Wireless DSLand LANCOM 1821Wireless ADSL VPN: For coupling via VPN, the connection between both LANs is estab-lished over a specially secured connection through the public Internet. Arouter with VPN support is required in both LANs. ISDN: For coupling via ISDN, a direct connection between both LANs isestablished over an ISDN connection. A router with ISDN interface isrequired in both LANs.Always configure both sidesBoth routers involved in the network interconnection must be configured.Care must be taken to ensure that the configuration information providedmatches.The following instructions will assume that LANCOM Wireless DSLrouters are being used on both sides. A network interconnection mayalso be realized with routers from other manufacturers. A mixed setupusually requires more extensive configuration measures for bothdevices, however. Please refer to the reference manual for more infor-mation in this regard.A setup wizard handles the configuration of the connection in the usual con-venient manner.Security aspectsYou must, of course, protect your LAN against unauthorized access. ALANCOM Wireless DSL therefore offers a whole range of security mechanismsthat can provide an outstanding level of protection: VPN: Network couplings via VPN transmit data by IPSec. The data areencrypted by AES, 3-DES, Blowfish or CAST encryption algorithms. ISDN: For network couplings via ISDN, the connection password, thechecking of the ISDN number and the callback function ensure the secu-rity of the connection. |
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