Remote Access TutorialBy Jeff Blees

A general look at what Remote Access means,Multi-Tech’s RAS History and a more specific look

at the MA100 ACS.

Introduction Acronyms RAS, NAS

Remote Access Server, Network Access Server A.K.A. Access Server

Objectives To give a remote node (computer), IP access to

the LAN the Access Server is installed on, via a dial up connection.

To provide network modem pool functionality (a group of modems on the LAN for workstations to use as needed).

“Hey Day” of dial up access servers, early 1990s thru 2001 or so. Consistent limited corporate need

The LAN port uses Ethernet to transceive IP packets. The Serial WAN ports uses PPP to transceive IP

packets with the remote node via the dial up connection.

Environments

Novel Servers, DOS Workstations (early days) IPX via PPP

Microsoft Windows Netbiose over IPX via PPP Netbui via PPP TCP/IP via PPP

Others Unix/Linux, IP via PPP Apple Talk via PPP

MTS RAS History Async Gateway and Remote Node Gateway (MiniArray

with ISI serial port card) with External Modems RASExpress (Mini & Multi Arrays with ISI Cards,

internal or external modems). Tower of Power

Multi Array, MS9, Multi Hub, MultiModemManager CommPletes

CommPlete 9600/2400 P2 SBC running RASExpress ISI cards (ISA slots),

• Central Site 56k modem

• T1 Digitally terminated Ethernet Switch System Management Module

• MultiCommManager (SNMP)

CommPlete 4000 (MA6) SBC running RASExpress, ISI cards

• 5634SMI modems• Iway Hopper cards

MultiManager (SNMP) RASFinder

MTASR-200 (3 port analog modems) 1 port or similar (1 port proxy server?)

MultiAccess (Linux based OS) MA30120

1U high with density of CommPlete 9600. Linux, 566M Celleron, 256M memory, 30 modem module per PCI slot (4) Software controlled digital line transceiver built

onto the mother board, supporting T1RBS, T1PRI or E1PRI.

ACS (analog communication server) Xscale processor (same as FaxFinder) MA100, MA4200\820, MA220

PPP Options

LCP Negotiations (Link Control Protocol) Authentication

None, PAP, CHAP Compression

Data, IP Header Echo Request for Keep Alive

NCP (Network Control Protocol) IP Address MTU, MRU DNS, WINS

MA100 Setup

Initial Set up Administration Authentication

RADIUS Modem Sharing Modem Set up

MA100 Management

HTTP Current Status Menu

MT Device Manger No Ethernet Link puts Modem OOS Telnet port 23

Next Steps Summarize any actions required of your audience Summarize any follow up action items required of you