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