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Lantronix SCS manual available for free PDF download: Reference Manual
Lantronix SCS Reference Manual (424 pages)
Secure Console Servers
Brand:
Lantronix
| Category:
Server
| Size: 2 MB
Table of Contents
Table of Contents
3
1 : Introduction
15
What Is New
15
How to Use this Manual
15
2 : Getting Started
17
Configuration Methods
17
Ezwebcon
17
Web Browser Interface
17
Command Line
18
Entering Commands
19
Command Types
19
Restricted Commands
20
Abbreviating Commands
20
Rebooting
21
Sending a Broadcast Message
21
Restoring Factory Defaults
21
Reloading Operational Software
22
Editing Boot Parameters
22
System Passwords
23
Login Password
23
Privileged Password
24
Basic Configuration
25
Changing the Server Name
25
Changing the Local Prompt
25
Changing the Login Prompts
26
Setting the Date and Time
26
Configuration
27
Mac Address
30
Network Mode
30
Configuration Files
32
Creating a Configuration File
32
Using a Configuration File
33
Disk Management
34
Flash Disk
34
ATA Cards
34
3 : Console Server Features
36
Overview of Console Servers
36
Event Port Logging
37
Enabling Port Logging
37
Viewing the Port Log
37
Email Alerts for Serial Events
38
Configuring Menu Mode
39
Menu Configuration at the Command Line
39
Menu Configuration Files
40
Nested Menus
42
Login Banner
43
Managing the Attached Devices
43
In-Band Management
43
Out of Band Management
44
Connecting from the Local> Prompt
44
Serial Break Handling
44
Serial Breaks
45
Alternate Break Sequences
45
Serial Port Configurations
49
Enabling the Incoming Password
49
Setting the Port Access Mode
49
Displaying Port Status
49
4 : Basic Remote Networking
50
Remote Connection Types
50
Remote Dial-In
50
LAN to LAN
51
Managing Connections with Sites
51
Creating a New Site
52
Displaying Existing Sites
53
Editing Sites
53
Testing Sites
54
Deleting Sites
54
Using Sites for Incoming Connections
54
Using Sites for Outgoing Connections
55
ISP Site Connections with NAT
55
IP Address Negotiation
56
IP Routing
57
Routes for Outgoing LAN to LAN
57
Routes for Incoming LAN to LAN
58
Routes for Remote User Dial-Ins
58
Configuring RIP for Sites
59
Incoming Connections
60
Starting Ppp/Slip for Incoming Connections
60
Incoming Connection Sequence
62
Configuring Incoming Connections
63
Outgoing Connections
65
Ports for Outgoing Connections
66
Telephone Numbers
66
Authentication
66
Configuring Outgoing Connections
67
Monitoring Networking Activity
69
Examples
70
LAN to LAN-Calling One Direction Only
70
LAN to LAN-Bidirectional (Symmetric) Calling
71
Remote Dial-In User Example
73
5 : Additional Remote Networking
75
Basic Security
75
Port Authentication
75
Filter Lists
76
Chat Scripts
77
Creating a Chat Script
77
Editing and Adding Entries
77
Configuring Timeouts
78
Setting Markers
78
Bandwidth on Demand
78
How Bandwidth Is Controlled
79
Disadvantages of Additional Bandwidth
79
Configuring Bandwidth Allocated to Sites
80
Displaying Current Bandwidth Settings
82
Restoring Default Bandwidth Settings
82
Monitoring Bandwidth Utilization
82
Increasing Performance
82
Filtering Unwanted Data
82
Compressing Data and Correcting Errors
83
Adding Bandwidth
83
IP Header Compression
83
Reducing Cost
84
Inactivity Logouts
84
Restricting Packets with Startup Filters
84
Reducing the Number of Ports Used
84
Using Higher Speed Modems
84
Restricting Connections to Particular Times
85
Increasing Requirements for Adding Additional Bandwidth
86
Controlling Frequency of Calls
86
Using the SCS Without Dialup Modems
87
Situations Where Dialup Modems Are Not Used
87
Configuring the Unit for Modemless Connections
88
Character Mode Sites
89
Examples
90
Creating a Chat Script
90
Creating a Simple Firewall
90
Controlling Access During Weekend Hours
90
6 : Ip
92
IP Addresses
92
IP Addresses for Incoming Connections
93
IP Addresses for Outgoing Connections
95
Subnet Masks
96
Length of Subnet Masks
97
Name Resolving
97
Configuring the Domain Name Service (DNS)
98
Specifying a Default Domain Name
98
Adding Hosts to the Host Table
98
Header Compression
99
Establishing Sessions
99
Telnet and Rlogin Sessions
100
SSH Sessions
101
Restricting Connections to SSH
108
Disabling HTTP and FTP
108
IP Security
108
Configuring the Security Table
109
Clearing Table Entries
109
IP Routing
110
How Packets Are Routed
110
Routing Tables
110
Using RIP
113
Proxy ARP
113
Using the Netbios Nameserver (NBNS)
113
Routing and Subnetworks
114
Displaying the IP Configuration
114
Examples
116
IP Address Assignment for Remote Networking
116
General IP Setup
117
Adding Static Routes
117
Default Routes to a Site
117
7 : Ppp
118
Lcp
118
Packet Sizes
118
Header Compression
118
Character Escaping
118
PPP Authentication
119
Cbcp
120
Ncp
120
Starting PPP
120
User-Initiated PPP
121
Automatic Detection of PPP
121
Dedicated PPP
121
Multilink PPP
121
Configuring the Calling SCS
121
Configuring the Receiving SCS
123
Restoring Default PPP Settings
124
Pocket PC PPP Support
124
Character Mode Sites
124
Troubleshooting
125
8 : Ports
126
Using Port Commands
126
Setting Port Access
126
Starting a Port
126
Waiting for Character Input
127
Starting Automatically
127
Port Modes
128
Character Mode
128
PPP Mode
128
SLIP Mode
128
Automatic Protocol Detection
129
Port-Specific Session Configuration
129
Multiple Sessions
129
Switching between Sessions
130
Exiting Sessions
130
Monitoring Session Activity
132
Setting Session Characteristics
132
Preferred/Dedicated Protocols & Hosts
133
Dedicated Protocols
133
Preferred/Dedicated Hosts
134
Saving Autostart Characters
134
Port Restrictions
134
Locking a Port
134
Enabling Signal Check
135
Username/Password Protection
135
Automatic Logouts
136
Restricting Commands
137
Receipt of Broadcast Messages
137
Dialback
137
Enabling Menu Mode
137
Serial Port Configuration
138
Naming a Port
138
Specifying a Username
138
Notification of Character Loss
138
Padding Return Characters
139
Setting the Device Type
139
Specifying a Terminal Type
139
Transmitting Serial Data
139
Restoring Default Port Settings
140
Configuration
140
Two-Wire Mode
141
Four-Wire Mode
142
Termination
143
Networking
143
Flow Control
143
Hardware Flow Control
143
Software Flow Control
144
Setting up Flow Control
144
Serial Signals
145
DSR (Data Set Ready)
146
DCD (Data Carrier Detect)
146
DTR (Data Terminal Ready)
147
Virtual Ports
147
Modem Emulation
148
9 : Modems
149
Setup and Wiring
149
Modem Speeds
150
Serial Speed
150
Line Speed
150
Modem Profiles
150
Using a Profile
151
Editing a Profile
151
Profile Settings
153
Profiles for Modems with External Switches
156
Modem and SCS Interaction
156
Initialization
156
Outgoing Calls
156
Incoming Calls
157
When a Port Is Logged out
157
Compression
157
Error Correction
158
Modem Security
159
Autostart
159
Dialback
159
Terminal Adapters
160
Caller-ID
160
Examples
161
Typical Modem Configuration
161
Modem Configuration Using Generic Profile
161
Editing Modem Strings
163
Troubleshooting
164
10 : Modem Sharing
166
Services
166
Creating a Service
166
Associating Ports with a Service
166
Displaying Current Services
167
Sharing Modems
168
Configuring an IP Modem Pool Service
168
Using the COM Port Redirector
168
Connecting to a TCP Listener Service
168
Connecting to a Serial Port
169
Connecting to a Service or Port
169
Examples
169
Configuring the Redirector
170
Configuring the PC Communications Software
170
11 : Security
172
Incoming Authentication
172
Character Mode Logins
172
PPP Logins
174
SLIP Logins
175
Outgoing Authentication
175
Outgoing Character Mode Connections
176
Outgoing PPP Connections
176
Outgoing SLIP Connections
176
Dialback
176
The Dialback Process
177
Dialback from Character Mode
177
Dialback from SLIP/PPP Mode
178
Dialback Using CBCP
178
Potential Dialback Drawbacks
179
Port User Restrictions
179
Database Configuration
180
Local (NVR) Database
180
Forcing Execution of Commands
181
Kerberos
182
Configuring Kerberos
183
Radius
185
Securid
188
UNIX Password File
190
User Restrictions
190
Privileged Commands
190
IP Address Restriction
191
Controlling Use of Set PPP/SLIP Commands
191
Securing a Port
191
Locking a Port
192
Forcing Execution of Commands
192
Restricting Multiple Authenticated Logins
192
Network Restrictions
193
Incoming Telnet/Rlogin Connections
193
Outgoing Rlogin Connections
193
Limiting Port Access
193
Disabling the FTP and HTTP Servers
194
Packet Filters and Firewalls
194
Event Logging
196
Setting the Destination
196
Logging Levels
197
Examples
199
Database Search Order
199
Terminal User Forced to Execute Command
199
Multiple-User Authentication
200
Outgoing LAN to LAN Connection
201
Creating a Firewall
201
Dialback
204
Troubleshooting
204
12 : Command Reference
205
Command Descriptions
205
About Strings
206
Conventions Used in this Chapter
206
Modem Commands
207
Define Ports Modem Answer
207
Define Ports Modem Attention
208
Define Ports Modem Busy
208
Define Ports Modem Callerid
209
Define Ports Modem Carrierwait
209
Define Ports Modem Commandprefix
210
Define Ports Modem Compression
210
Define Ports Modem Connected
211
Define Ports Modem Control
212
Define Ports Modem Dial
212
Define Ports Modem Error
213
Define Ports Modem Errorcorrection
214
Define Ports Modem Getsetup
214
Define Ports Modem Init
215
Define Ports Modem Nocarrier
216
Define Ports Modem Nodialtone
216
Define Ports Modem OK
217
Define Ports Modem Reset
217
Define Ports Modem Ring
218
Define Ports Modem Save
218
Define Ports Modem Speaker
219
Define Ports Modem Statistics
219
Define Ports Modem Type
220
Show/Monitor/List Modem
220
Ip/Network Commands
222
Clear/Purge Hosts
222
Clear/Purge IP Factory
222
Clear/Purge IP NAT Table
222
Clear/Purge IP Route
223
Clear/Purge IP Security
223
Clear/Purge IP Trusted
224
Connect
224
Disconnect
226
Purge IP Ethernet
226
Rlogin
226
Send
227
Set/Define 80211
228
Set/Define Hosts
238
Set/Define IP All/Ethernet
239
Set/Define IP Create
241
Set/Define IP Domain
242
Set/Define IP Ethernet
242
Set/Define IP Host Limit
242
Set/Define IP Ipaddress
243
Set/Define IP Loadhost
243
Set/Define IP Nameserver
243
Set/Define IP NAT
244
Set/Define IP NAT Table
245
Set/Define IP NBNS
245
Set/Define IP Route
246
Set/Define IP Routing
247
Set/Define IP Security
247
Set/Define IP Subnet
249
Set/Define IP TCP Keepalive
249
Set/Define IP Timeserver
250
Set/Define IP Trusted
251
Show IP Counters
252
Show/Monitor/List Hosts
252
Show/Monitor/List IP
253
Ssh
255
Telnet
255
List Email
256
Port Commands
256
Lock
256
Logout Port
257
Purge Port
257
Purge Email
258
Resume
258
Set Noprivileged
258
Snoop Port
259
Define Email
259
Set/Define Ports Access
261
Set/Define Ports Authenticate
262
Set/Define Ports Autobaud
262
Set/Define Ports Autoconnect
263
Set/Define Ports Autostart
264
Set/Define Ports Backward Switch
265
Set/Define Ports Break
266
Define Ports Backspace
267
Set/Define Ports Broadcast
268
Set/Define Ports Character Size
268
Set/Define Ports Command Completion
269
Set/Define Ports Datasend
270
Define Ports Dedicated
272
Define Ports Dialback
274
Set/Define Ports Dsrlogout
274
Set/Define Ports Dtrwait
275
Define Ports Event Email Serialdata
275
Set/Define Ports Flow Control
276
Set/Define Ports Forward Switch
277
Set/Define Ports Inactivity Logout
278
Set/Define Ports Local Switch
278
Set/Define Ports Loss Notification
279
Set/Define Ports Menu
280
Set/Define Ports Modem Emulation
280
Set/Define Ports Name
281
Set/Define Ports Parity
281
Set/Define Ports Password
282
Set/Define Ports Pocketpc
283
Set/Define Ports Preferred
283
Define Ports PPP
285
Define Ports Pppdetect
288
Set/Define Ports Printer
288
Set/Define Ports Security
289
Set/Define Ports Serial Log
289
Set/Define Ports Session Limit
290
Set/Define Ports Signal Check
290
Define Ports SLIP
291
Set/Define Ports Slipdetect
292
Set/Define Ports Speed
292
Set/Define Ports Stop
293
Set/Define Ports Telnet Pad
293
Set/Define Ports Termtype
294
Set/Define Ports Type
294
Set/Define Ports Username
295
Set/Define Ports Verification
296
Set Privileged/Noprivileged
296
Define Protocols RS485
297
Set Session
298
Set PPP
299
Set SLIP
300
Show/Monitor/List Ports
300
Show RS485
302
Show/Monitor Sessions
302
Test Port
303
Unlock Port
304
Service Commands
305
Clear/Purge Service
305
Remove Queue
305
Set/Define Service
306
Set/Define Service Banner
307
Set/Define Service Binary
307
Set/Define Service EOJ
307
Set/Define Service Formfeed
308
Set/Define Service Identification
308
Set/Define Service Password
309
Set/Define Service Ports
309
Set/Define Service Postscript
310
Set/Define Service Psconvert
310
Set/Define Service RTEL
310
Set/Define Service SOJ
311
Set/Define Service Tcpport
311
Set/Define Service Telnetport
312
Show/Monitor/List Services
312
Server Commands
315
Clear/Purge Menu
315
Initialize Server
315
Set/Define Menu
316
Set/Define Protocol FTP
318
Set/Define Protocol HTTP
318
Set/Define Protocol SSH Mode
318
Set/Define Server Altprompt
319
Set/Define Server BOOTP
319
Set/Define Server BOOTGATEWAY
320
Set/Define Server Broadcast
320
Set/Define Server Buffering
320
Set/Define Server Clock
321
Set/Define Server DHCP
321
Set/Define Server Host Limit
322
Set/Define Server Inactivity
322
Set/Define Server Incoming
323
Set/Define Server Loadhost
324
Set/Define Server Lock
324
Set/Define Server Login Password
325
Set/Define Server Name
325
Set/Define Server Nameserver
326
Set/Define Server Password Limit
326
Set/Define Server Privileged Password
327
Set/Define Server Prompt
327
Set/Define Server RARP
329
Set/Define Server Retransmit Limit
329
Set/Define Server Rlogin
329
Set/Define Server Session Limit
330
Set/Define Server Silentboot
330
Set/Define Server Software
330
Set/Define Server Startupfile
331
Set/Define Server Timezone
332
Show/Monitor/List Menu
333
Show/Monitor/List Server
333
Show/Monitor/List Timezone
335
Show/Monitor Users
335
Source
335
Site Commands
336
Define Site Authentication
336
Define Site Bandwidth
338
Define Site Chat
340
Define Site Dial on Hangup
342
Define Site Filter
342
Define Site Idle
343
Define Site IP
344
Define Site MTU
346
Define Site Permanent
347
Define Site Port
347
Define Site Protocol
349
Define Site Telephone
349
Define Site Time
350
Logout Site
352
Purge Site
352
Show/Monitor/List Sites
353
Test Site
354
Security Commands
355
Clear/Purge Authentication
355
Clear/Purge Dialback
356
Clear/Purge Filter
356
Clear/Purge SNMP
357
Set/Define Authentication
357
Set/Define Authentication Kerberos
358
Set/Define Authentication Local
360
Set/Define Authentication RADIUS
361
Set/Define Authentication Securid
363
Set/Define Authentication Strictfail
365
Set/Define Authentication TFTP
366
Set/Define Authentication Unique
367
Set/Define Authentication User
367
Set/Define Dialback
369
Set/Define Filter
370
Set/Define Filter any
371
Set/Define Filter Generic
372
Set/Define Filter IP
373
Set/Define FTP
376
Set/Define HTTP
376
Set/Define Logging
376
Set/Define Password
380
Set/Define Server Incoming Secure
380
Set/Define SNMP
381
Show/Monitor/List Authentication
381
Show/Monitor/List Dialback
382
Show/Monitor/List Filter
382
Show/Monitor/List Logging
383
Show/Monitor/List SNMP
383
PC Card Commands
383
Show Pccard
383
Navigation/Help Commands
384
Apropos
384
Backwards
384
Broadcast
384
Cls
385
Disk
386
Finger
390
Forwards
390
Help
391
Monitor
391
Netstat
391
Ping
392
Resolve
392
Save
393
Show/Monitor Queue
394
Show Version
395
Zero Counters
396
A: Environment Strings
397
Usage
397
A.1.1 Multiple Strings
397
Available Strings
397
Usage Examples
397
B: Show 802.11 Errors
399
Introduction
399
Error Bits
399
Leftmost Number
399
Rightmost Number
401
C: SNMP Support
404
Support
404
Security
404
D: Supported RADIUS Attributes
406
Authentication Attributes
406
Access-Request
406
Access-Accept
407
Accounting Attributes
409
Examples
410
Configuring Authenticated PPP Connections
410
Forcing a Telnet Connection to Preferred Host
411
Forcing a Telnet Connection to a Specific Port
411
Preventing RADIUS Authentication
411
Index
412
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