GE Multinet 4 - Page 7

TABLE OF CONTENTS
MULTINET4 MULTI-PORT SERIAL SERVER & MANAGED SWITCH – INSTRUCTION MANUAL TOC–5
DESIGN CONSIDERATIONS ................................................................................................. 6-8
Configuring Bridge Settings ..................................................................................6 - 8
Configuring Port Settings .......................................................................................6 - 9
VLAN ...................................................................................................................................................... 6-10
A
DDING VLANS .................................................................................................................. 6-10
VLAN IDs ........................................................................................................................6 - 10
CONFIGURING PORTS FOR VLAN MEMBERSHIP ............................................................ 6-10
Port VLAN IDs ..............................................................................................................6 - 10
Tagging ..........................................................................................................................6 - 10
Filtering ...........................................................................................................................6 - 11
Frame Classification and Forwarding ..............................................................6 - 11
VLANS AND SERIAL PORTS ............................................................................................... 6-12
SECURITY ............................................................................................................................................. 6-13
E
THERNET PORT SECURITY ................................................................................................ 6-13
Address Locking .........................................................................................................6 - 13
Link Locking ..................................................................................................................6 - 13
SERIAL PORT SECURITY ...................................................................................................... 6-13
Serial Data Over SSL ................................................................................................6 - 13
Multinet4 SSL Version Support ............................................................................6 - 14
Secure Web Server using HTTP over SSL (https://) .....................................6 - 14
KEYS AND CERTIFICATES .................................................................................................... 6-14
RSA Public Key Cryptography ..............................................................................6 - 15
Digital Signatures ......................................................................................................6 - 15
X.509 Certificates .......................................................................................................6 - 15
Certificate Authority .................................................................................................6 - 15
Multinet4 Certificate Files ......................................................................................6 - 15
Multinet4 Key Files ....................................................................................................6 - 16
Key Exchange ..............................................................................................................6 - 18
Peer Authentication ..................................................................................................6 - 18
Certificate and Key File Generation ..................................................................6 - 18
Certificate and Key File Installation ..................................................................6 - 21
RADIUS SUPPORT .............................................................................................................. 6-21
M
ULTINET4 CIPHER SUPPORT ........................................................................................... 6-21
SSH ......................................................................................................................................................... 6-23
MODBUS .............................................................................................................................................. 6-24
N
ETWORK TOPOLOGIES ...................................................................................................... 6-24
S
ERIAL PROTOCOL VARIANTS ............................................................................................ 6-24
N
ETWORK PROTOCOL ......................................................................................................... 6-25
E
XCEPTION HANDLING ....................................................................................................... 6-25
TCP C
ONNECTION HANDLING .......................................................................................... 6-26
USER ACCOUNT MANAGEMENT ................................................................................................ 6-27
U
SER GROUPS ..................................................................................................................... 6-27
7: TERMINAL SERVER
APPLICATION NOTES
WHAT IS A TERMINAL SERVER? ................................................................................................. 7-1
S
ERIAL PROTOCOL STANDARDS ........................................................................................ 7-1
N
ETWORKING STANDARDS ................................................................................................ 7-2
BRIDGING THE GAP BETWEEN SERIAL AND NETWORK COMMUNICATION .......... 7-3
TERMINAL SERVER OPERATION ................................................................................................. 7-4
P
ASSIVE MODE CHANNELS ................................................................................................ 7-4
A
CTIVE MODE CHANNELS .................................................................................................. 7-4
M
IXED MODE ....................................................................................................................... 7-5
S
ESSION TYPE ...................................................................................................................... 7-5
APPLICATION #1: DEVICE CONSOLE ACCESS ...................................................................... 7-6
APPLICATION #2: SERIAL-OVER-TCP/IP TUNNEL .............................................................. 7-8
APPLICATION #3: MULTIPOINT SCADA ................................................................................... 7-10