Home » Lantronix Manuals » Electronics Accessories » Lantronix SCS100/200/400 » Manual Viewer

Lantronix SCS100/200/400 SCS Reference Manual - Page 22

Reloading Operational Software, Editing Boot Parameters

View all Lantronix SCS100/200/400 manuals

Add to My Manuals
Save this manual to your list of manuals

Page 22 highlights

Getting Started Rebooting When initialized, the SCS sets local authentication in the first precedence slot. For more information on authentication and precedence, see Database Configuration on page 11-9. 2.2.3 Reloading Operational Software The SCS stores its software in Flash ROM. The software controls the initialization process, the operation of the SCS, and the processing of commands. The contents of Flash ROM can be updated by downloading a new version of the operational software. For instructions on reloading Flash ROM, refer to your Installation Guide. 2.2.4 Editing Boot Parameters If the information that the SCS uses at boot time changes, you will need to change the SCS boot parameters. Boot parameters include the following: ‹ Loadhost (TCP/IP). The loadhost is the host from which the SCS operational software is downloaded at boot time. ‹ Backup loadhost (optional). Software is downloaded from a backup loadhost when the primary loadhost is unavailable. ‹ Software filename ‹ RARP (may be enabled or disabled) ‹ BOOTP (may be enabled or disabled) Boot parameters are edited using Set/Define Server commands such as Set/Define Server Loadhost. All available server commands are listed in Server Commands on page 12-111. Use the Define commands if you want any changes to be saved after reboot. Figure 2-5: Editing the Loadhost Address Local>> DEFINE SERVER LOADHOST 192.0.1.8 2-6

Section	Page
Contents	3
1: Introduction 1-1	3
2: Getting Started 2-1	3
3: Console Server Features 3-1	3
4: Basic Remote Networking 4-1	4
5: Additional Remote Networking 5-1	4
6: IP 6-1	5
7: PPP 7-1	5
8: Ports 8-1	6
9: Modems 9-1	7
10: Modem Sharing 10-1	7
11: Security 11-1	8
12: Command Reference 12-1	8
A: Environment Strings A-1	13
B: Show 802.11 Errors B-1	13
C: SNMP Support C-1	13
D: Supported RADIUS Attributes D-1	13
Index	13
1: Introduction	15
1.1 What Is New	15
1.2 How To Use This Manual	15
2: Getting Started	17
2.1 Configuration Methods	17
2.1.1 EZWebCon	17
2.1.2 Web Browser Interface	17
2.1.3 Command Line	18
2.1.3.1 Entering Commands	19
2.1.3.2 Command Types	19
2.1.3.3 Restricted Commands	20
2.1.3.4 Abbreviating Commands	20
2.2 Rebooting	21
2.2.1 Sending a Broadcast Message	21
2.2.2 Restoring Factory Defaults	21
2.2.3 Reloading Operational Software	22
2.2.4 Editing Boot Parameters	22
2.3 System Passwords	23
2.3.1 Login Password	23
2.3.2 Privileged Password	24
2.4 Basic Configuration	25
2.4.1 Changing the Server Name	25
2.4.2 Changing the Local Prompt	25
2.4.3 Changing the Login Prompts	26
2.4.4 Setting the Date and Time	26
2.4.4.1 Setting the Clock	26
2.4.4.2 Setting the Timezone	26
2.4.4.3 Designating a Timeserver	27
2.4.5 802.11 Configuration	27
2.4.5.1 802.11 Terms	28
2.4.5.2 Enabling 802.11 Networking	29
2.4.5.3 802.11 Region	29
2.4.5.4 MAC Address	30
2.4.5.5 Extended Service Set ID (ESSID)	30
2.4.5.6 Network Mode	30
2.4.5.7 Channel	31
2.4.5.8 WEP	31
2.5 Configuration Files	32
2.5.1 Creating a Configuration File	32
1 On your host, enter a series of SCS commands in a text file, one command per line. Privileged c...	32
2 Test the configuration file. To test the file, use the Source command, discussed on page 12-131.	32
2.5.2 Using a Configuration File	33
2.6 Disk Management	34
2.6.1 Flash Disk	34
2.6.2 ATA Cards	34
3: Console Server Features	36
3.1 Overview of Console Servers	36
3.2 Event Port Logging	37
3.2.1 Enabling Port Logging	37
3.2.2 Viewing the Port Log	37
3.2.2.1 Telnet/Serial Login	37
1 At a Local_n >prompt, type disk ls to see the files. The file is Port_nn by default, where nn i...	37
2 To view the entire log, type disk cat port_nn.log.	37
3.2.2.2 Web Interface	37
1 Open the web browser interface and http to the IP address or hostname of the SCS. The SCS Home ...	37
2 Click the link to open the file in the default text viewer.	37
3.2.2.3 FTP	37
1 FTP to the SCS.	38
2 Type ls to get a listing of log files.	38
3 “Get” or “mget” a copy of the log file (for example., # mget Port_1.log).	38
3.3 Email Alerts for Serial Events	38
3.4 Configuring Menu Mode	39
3.4.1 Menu Configuration at the Command Line	39
3.4.2 Menu Configuration Files	40
1 Start a new text file on a host other than the SCS. Once the file is complete, you will FTP it ...	40
2 Define up to 10 groups of users. Each group, listed on separate lines, will later be assigned a...	40
3 Begin defining the menus. Start by assigning a menu to a specific group.	40
4 Define the items that will appear in the menu. The items will be numbered in the order entered....	40
5 After ENDMENU, you can go on to define more menus for other groups of users.	41
6 FTP the file to the SCS /flash disk.	41
3.4.3 Nested Menus	42
3.5 Login Banner Pages	43
1 Create text files with the desired text name prelogin.txt and/or postlogin.txt.	43
2 FTP to the IP address of the SCS.	43
3 Log in with the username root and enter the privileged password (system by default.)	43
4 Change directories to /flash or /ram.	43
5 “Put” the text files into the desired directory.	43
6 Reboot the SCS.	43
3.6 Managing the Attached Devices	43
3.6.1 In-Band Management	43
3.6.2 Out of Band Management	44
1 Open a terminal emulator such as Hyperterminal	44
2 Dial the phone number for the modem attached to the SCS.	44
3 When the connection is complete, press <CR>.	44
4 Enter your username and password.	44
3.6.3 Connecting from the Local> Prompt	44
3.6.4 Serial Break Handling	44
3.6.4.1 Serial Breaks	45
3.6.4.2 Alternate Break Sequences	45
3.7 Serial Port Configurations	49
3.7.1 Enabling the Incoming Password	49
3.7.2 Setting the Port Access Mode	49
3.7.3 Displaying Port Status	49
3.7.3.1 SNMP Queries	49
4: Basic Remote Networking	50
4.1 Remote Connection Types	50
4.1.1 Remote Dial-in	50
4.1.2 LAN to LAN	51
4.2 Managing Connections With Sites	51
1 To configure the SCS and the remote router appropriately for a connection. For example, particu...	51
2 To enforce specific network requirements. For example, compression may be required for all conn...	51
3 To manage a connection once it is in place. For example, it may be desirable to control the amo...	52
4 To enable a system administrator to monitor a single connection. For example, a system administ...	52
4.2.1 Creating a New Site	52
4.2.1.1 Default Site Configuration	52
4.2.2 Displaying Existing Sites	53
4.2.3 Editing Sites	53
4.2.4 Testing Sites	54
4.2.5 Deleting Sites	54
4.2.6 Using Sites for Incoming Connections	54
4.2.7 Using Sites for Outgoing Connections	55
4.2.8 ISP Site Connections with NAT	55
1 Create the SCS’s IP address to an address on a private subnet, for example:	55
2 Create the site that will dial up the ISP. Your ISP will provide most of the information:	55
3 Set the IP address of the site to the single non-private (Internet) address for your network.	56
4 Enable NAT on the SCS, using the DEFINE IP NAT ENABLED command.	56
5 Configure the NAT parameters if needed.The default parameters are sufficient for most situation...	56
6 Configure the SCS as the gateway on the machines on the private network (e.g., 192.168.13.2,.3,...	56
4.3 IP Address Negotiation	56
4.4 IP Routing	57
4.4.1 Routes for Outgoing LAN to LAN	57
4.4.2 Routes for Incoming LAN to LAN	58
4.4.3 Routes for Remote User Dial-ins	58
4.4.4 Configuring RIP for Sites	59
4.4.4.1 Disabling RIP	59
4.4.4.2 Interval Between RIP Updates	59
4.4.4.3 Configuring the Metric	59
4.5 Incoming Connections	60
4.5.1 Starting PPP/Slip for Incoming Connections	60
4.5.1.1 Starting PPP or SLIP from the Local> Prompt	61
4.5.1.2 Starting PPP or SLIP Using Automatic Protocol Detection	61
4.5.1.3 Starting PPP or SLIP on a Dedicated Port	62
4.5.2 Incoming Connection Sequence	62
4.5.2.1 Ports Using Automatic Protocol Detection	62
1 If automatic protocol detection (for PPP, SLIP, or both) is enabled, the link layer starts up w...	62
2 The caller is attached to a temporary site. The name of this site is based on the port number u...	62
3 If using SLIP, callers continue to use the temporary site for the remainder of the connection.	62
A If the SCS port receiving the call has been configured to authenticate remote hosts using CHAP ...	62
B The username and password are compared to existing site names. One of the following occurs:	63
1 If the username matches the name of a site, the site will be checked to see if it has a local p...	63
2 If a site isn’t configured with a password, or the password entered by the caller doesn’t match...	63
4.5.2.2 Ports Not Using Automatic Protocol Detection	63
1 The caller sends a carriage return.	63
2 If the port is configured to prompt for a login password, the caller must enter the correct log...	63
3 To start the link layer, the caller has to enter commands to start PPP or SLIP (Set PPP or Set ...	63
A If the caller specifies a site to be started when PPP or SLIP is started, the user is attached ...	63
B If a site isn’t specified, the user is attached to a temporary site. The name of this site is b...	63
4.5.3 Configuring Incoming Connections	63
1 Configure the Ports	63
2 Create the Sites	64
3 Configure Authentication	64
4.6 Outgoing Connections	65
4.6.1 Ports for Outgoing Connections	66
4.6.2 Telephone Numbers	66
4.6.3 Authentication	66
4.6.4 Configuring Outgoing Connections	67
4.6.4.1 Configure Ports	67
4.6.4.2 Configure Modems	67
4.6.4.3 Create a Site	67
4.6.4.4 Select Ports to Use for Dialing Out	68
4.6.4.5 Assign a Telephone Number to the Port or Site	68
4.6.4.6 Configure Authentication	68
4.6.4.7 Configure Routing	69
4.7 Monitoring Networking Activity	69
4.8 Examples	70
4.8.1 LAN to LAN—Calling One Direction Only	70
4.8.2 LAN to LAN—Bidirectional (Symmetric) Calling	71
4.8.3 Remote Dial-in User Example	73
4.8.3.1 Configure the Ports & Modems	73
4.8.3.2 Define the IP Address Pool	74
4.8.3.3 Configure the Default Site	74
5: Additional Remote Networking	75
5.1 Basic Security	75
5.1.1 Port Authentication	75
1 Ensure that the authentication databases have been configured using the Set/Define Authenticati...	75
2 Associate commands with a username by entering the Set/Define Authentication User command. When...	75
3 Enable authentication on each port that will be used for incoming logins.	76
5.1.2 Filter Lists	76
1 Allow any packet	76
2 Deny all IP traffic matching a particular rule	76
1 Deny all IP traffic matching a particular rule	77
2 Allow any packet	77
5.2 Chat Scripts	77
5.2.1 Creating a Chat Script	77
5.2.2 Editing and Adding Entries	77
5.2.3 Configuring Timeouts	78
5.2.4 Setting Markers	78
5.3 Bandwidth On Demand	78
5.3.1 How Bandwidth is Controlled	79
5.3.2 Disadvantages of Additional Bandwidth	79
5.3.3 Configuring Bandwidth Allocated to Sites	80
5.3.3.1 Estimate Each Port’s Bandwidth	80
5.3.3.2 Assign Port Priority Numbers	80
5.3.3.3 Specify the Bandwidth Measurement Period	81
5.3.3.4 Specify When Bandwidth is Added or Removed	81
5.3.3.5 Configure the Delay Between Bandwidth Adjustments	81
5.3.4 Displaying Current Bandwidth Settings	82
5.3.5 Restoring Default Bandwidth Settings	82
5.3.6 Monitoring Bandwidth Utilization	82
5.4 Increasing Performance	82
5.4.1 Filtering Unwanted Data	82
5.4.2 Compressing Data and Correcting Errors	83
5.4.3 Adding Bandwidth	83
5.4.4 IP Header Compression	83
5.5 Reducing Cost	84
5.5.1 Inactivity Logouts	84
5.5.2 Restricting Packets with Startup Filters	84
5.5.3 Reducing the Number of Ports Used	84
5.5.4 Using Higher Speed Modems	84
5.5.5 Restricting Connections to Particular Times	85
5.5.5.1 Determining if Site Restrictions are Appropriate	85
5.5.5.2 Setting Up Site Restrictions	85
5.5.5.3 Getting Timesetting Information	85
5.5.6 Increasing Requirements for Adding Additional Bandwidth	86
5.5.7 Controlling Frequency of Calls	86
5.6 Using the SCS Without Dialup Modems	87
5.6.1 Situations Where Dialup Modems Are Not Used	87
5.6.1.1 Direct Connections	87
5.6.1.2 Statistical Multiplexors	87
5.6.1.3 Synchronous Leased Lines	87
5.6.1.4 Analog Leased Lines	87
5.6.2 Configuring the Unit for Modemless Connections	88
5.6.2.1 PPP	88
5.6.2.2 SLIP	89
5.7 Character Mode Sites	89
5.8 Examples	90
5.8.1 Creating a Chat Script	90
5.8.2 Creating a Simple Firewall	90
5.8.3 Controlling Access During Weekend Hours	90
6: IP	92
6.1 IP Addresses	92
6.1.1 IP Addresses for Incoming Connections	93
6.1.1.1 Defining an IP Address Pool	94
6.1.1.2 Specifying a Site’s IP Address Range	94
6.1.1.3 Assigning a Specific IP Address for a Site	95
6.1.2 IP Addresses For Outgoing Connections	95
6.1.2.1 SLIP	95
6.1.2.2 Dialing Out to an ISP	96
6.2 Subnet Masks	96
6.2.1 Length of Subnet Masks	97
6.3 Name Resolving	97
6.3.1 Configuring the Domain Name Service (DNS)	98
6.3.2 Specifying a Default Domain Name	98
6.3.3 Adding Hosts to the Host Table	98
6.4 Header Compression	99
6.5 Establishing Sessions	99
6.5.1 Telnet and Rlogin Sessions	100
6.5.1.1 Outgoing Telnet/Rlogin Connections	100
6.5.1.2 Incoming Telnet/Rlogin Connections	101
6.5.2 SSH Sessions	101
6.5.2.1 Permanent Host Keys	102
6.5.2.2 Supported SSH Connections	102
6.5.2.3 Creating an Authorized_Keys File	102
6.5.2.4 Shared Key Authentication	103
1 The SSH client on the user’s computer sends the public half of its identity key to the SCS.	103
2 The SCS checks to see if this user’s identity key is listed in the AUTHORIZED_KEYS (or AUTHORIZ...	103
3 The SSH client then sends the private half of its identity key to the SCS.	103
4 The SSH compares the private half of the user’s identity key to the key stored in the host_rsa_...	103
5 If the private keys match, the user’s identity is confirmed and an SSH connection forms.	103
6.5.2.5 Setting up RSA Shared Key Authentication (for SSH v1)	103
1 FTP to the IP address of the SCS.	103
2 Log in with the usernname of root and enter the privileged password (system by default).	103
3 Change directories to /flash/ssh/.	103
4 “Put” the AUTHORIZED_KEYS FILE into that directory.	103
5 Reboot the SCS.	104
6.5.2.6 Setting up DSA Shared Key Authentication (for SSH v2)	104
1 FTP to the IP address of the SCS.	104
2 Log in with the usernname of root and enter the privileged password (system by default).	104
3 Change directories to /flash/ssh/.	105
4 “Put” the AUTHORIZED_KEYS2 FILE into that directory.	105
5 Reboot the SCS.	105
6.5.2.7 Username/Password Authentication (SSHv1 or SSHv2)	105
6.5.2.8 SSH Incoming Connections (Unix and Non-Unix)	106
1 At the command prompt, enter ssh followed by the SCS host name or IP Address. You may also spec...	106
2 If your RSA or DSA key is passphrase protected, enter your password.	106
3 If you are not using an RSA or DSA key, specify the username and password that the SCS will use...	106
4 If connecting directly to a serial port on the SCS, specify the port number as 22xx, where xx i...	106
1 Start your SSH Client software.	106
2 Enter the SCS host name or IP Address and specify the public key file to use.	106
3 Enter the ssh command followed by the SCS name.	106
4 If connecting directly to a serial port on the SCS, specify the port number as 22xx, where xx i...	106
5 If your RSA or DSA key is passphrase protected, enter your password.	107
6 If you are not using an RSA or DSA key, specify the username and password that the SCS will use...	107
6.5.2.9 Outgoing SSH Connections	107
6.5.3 Restricting Connections to SSH	108
6.5.4 Disabling HTTP and FTP	108
6.6 IP Security	108
6.6.1 Configuring the Security Table	109
6.6.2 Clearing Table Entries	109
6.7 IP Routing	110
6.7.1 How Packets are Routed	110
6.7.2 Routing Tables	110
6.7.2.1 Types of Routes	110
6.7.2.2 Adding Routes to the Table	111
6.7.3 Using RIP	113
6.7.4 Proxy ARP	113
6.7.5 Using the NetBIOS Nameserver (NBNS)	113
6.7.6 Routing and Subnetworks	114
6.8 Displaying the IP Configuration	114
6.9 Examples	116
6.9.1 IP Address Assignment for Remote Networking	116
6.9.2 General IP Setup	117
6.9.3 Adding Static Routes	117
6.9.4 Default Routes to a Site	117
7: PPP	118
7.1 LCP	118
7.1.1 Packet Sizes	118
7.1.2 Header Compression	118
7.1.3 Character Escaping	118
7.1.4 PPP Authentication	119
7.1.4.1 Configuring CHAP and PAP	119
1 Remote hosts must authenticate themselves	119
2 The SCS authenticates itself to remote hosts	119
3 Remote hosts and the SCS authenticate each other	119
7.1.5 CBCP	120
7.2 NCP	120
7.3 Starting PPP	120
7.3.1 User-Initiated PPP	121
7.3.2 Automatic Detection of PPP	121
7.3.3 Dedicated PPP	121
7.4 Multilink PPP	121
7.4.1 Configuring the Calling SCS	121
1 Enable Multilink PPP on all ports that may be used for a multilink connection.	121
2 Create a site for the outgoing multilink PPP connection.	122
3 Configure the ports associated with the multilink site.	122
A Associate the site with two or more ports, giving each port a priority. Higher priority ports w...	122
B Estimate the bandwidth of each port associated with the site.	122
C Specify a telephone number for each port.	122
4 Configure the site bandwidth parameters.	122
A Specify the initial and maximum bandwidths.	123
B Specify when to add and remove bandwidth from a connection.	123
5 Configure site authentication.	123
7.4.2 Configuring the Receiving SCS	123
1 Configure the ports that will be used for the multilink connection.	123
A Enable Multilink PPP on all ports that will be used.	123
B Ensure that the telephone numbers of the modems attached to the receiving ports match those con...	123
C Enable PPP CHAP and/or PAP authentication on the ports.	124
2 Create a site to receive the multilink traffic.	124
3 Configure site authentication.	124
7.5 Restoring Default PPP Settings	124
7.6 Pocket PC PPP Support	124
7.7 Character Mode Sites	124
7.8 Troubleshooting	125
8: Ports	126
8.1 Using Port Commands	126
8.2 Setting Port Access	126
8.3 Starting a Port	126
8.3.1 Waiting for Character Input	127
8.3.2 Starting Automatically	127
8.3.2.1 Enabling Autostart	127
8.3.2.2 Setting an Autostart Trigger	127
8.4 Port Modes	128
8.4.1 Character Mode	128
8.4.2 PPP Mode	128
8.4.3 SLIP Mode	128
8.5 Automatic Protocol Detection	129
8.6 Port-Specific Session Configuration	129
8.6.1 Multiple Sessions	129
8.6.2 Switching Between Sessions	130
8.6.3 Exiting Sessions	130
8.6.3.1 Breaking from a Session	130
8.6.3.2 Disconnecting Sessions	132
8.6.4 Monitoring Session Activity	132
8.6.5 Setting Session Characteristics	132
8.6.5.1 Configuring a Session at Connection Time	132
8.6.5.2 Configuring a Session Once It’s Running	133
8.7 Preferred/Dedicated Protocols & Hosts	133
8.7.1 Dedicated Protocols	133
8.7.2 Preferred/Dedicated Hosts	134
8.7.3 Saving Autostart Characters	134
8.8 Port Restrictions	134
8.8.1 Locking a Port	134
8.8.2 Enabling Signal Check	135
8.8.3 Username/Password Protection	135
8.8.3.1 Login Password	135
8.8.3.2 Username/Password Authentication	136
8.8.4 Automatic Logouts	136
8.8.4.1 DSR Logouts	136
8.8.4.2 Inactivity Logouts	136
8.8.5 Restricting Commands	137
8.8.6 Receipt of Broadcast Messages	137
8.8.7 Dialback	137
8.8.8 Enabling Menu Mode	137
8.9 Serial Port Configuration	138
8.9.1 Naming a Port	138
8.9.2 Specifying a Username	138
8.9.3 Notification of Character Loss	138
8.9.4 Padding Return Characters	139
8.9.5 Setting the Device Type	139
8.9.6 Specifying a Terminal Type	139
8.9.7 Transmitting Serial Data	139
8.9.8 Restoring Default Port Settings	140
8.10 RS-485 Configuration	140
8.10.1 Two-wire Mode	141
8.10.2 Four-wire Mode	142
8.10.2.1 TXDrive	142
8.10.3 Termination	143
8.10.4 RS-422 Networking	143
8.11 Flow Control	143
8.11.1 Hardware Flow Control	143
8.11.2 Software Flow Control	144
8.11.3 Setting Up Flow Control	144
1 Set Appropriate Line/Serial Speeds	144
2 Disable Autobaud	144
3 Determine the Appropriate Flow Control Method	144
4 Configure Flow Control	145
8.12 Serial Signals	145
8.12.1 DSR (Data Set Ready)	146
8.12.1.1 DSR for Automatic Logouts	146
8.12.1.2 DSR for Controlling Remote Logins	146
8.12.2 DCD (Data Carrier Detect)	146
8.12.3 DTR (Data Terminal Ready)	147
8.13 Virtual Ports	147
8.14 Modem Emulation	148
9: Modems	149
9.1 Setup and Wiring	149
9.2 Modem Speeds	150
9.2.1 Serial Speed	150
9.2.2 Line Speed	150
9.3 Modem Profiles	150
9.3.1 Using a Profile	151
9.3.2 Editing a Profile	151
9.3.2.1 Examine the Profile	152
9.3.2.2 Edit the Init String	152
9.3.2.3 Edit Other Settings	153
9.3.2.4 Enable Modem Control	153
9.3.2.5 Initialize the Modem	153
9.3.3 Profile Settings	153
9.3.4 Profiles for Modems with External Switches	156
9.4 Modem and SCS Interaction	156
9.4.1 Initialization	156
9.4.2 Outgoing Calls	156
9.4.3 Incoming Calls	157
9.4.4 When a Port is Logged Out	157
9.4.5 Compression	157
9.4.6 Error Correction	158
9.4.7 Modem Security	159
9.4.8 Autostart	159
9.4.9 Dialback	159
9.5 Terminal Adapters	160
9.6 Caller-ID	160
9.7 Examples	161
9.7.1 Typical Modem Configuration	161
9.7.2 Modem Configuration Using Generic Profile	161
9.7.3 Editing Modem Strings	163
9.8 Troubleshooting	164
10: Modem Sharing	166
10.1 Services	166
10.1.1 Creating a Service	166
10.1.2 Associating Ports with a Service	166
10.1.3 Displaying Current Services	167
10.2 Sharing Modems	168
10.2.1 Configuring an IP Modem Pool Service	168
10.2.2 Using the COM Port Redirector	168
10.2.3 Connecting to a TCP Listener Service	168
10.2.4 Connecting to a Serial Port	169
10.2.5 Connecting to a Service or Port	169
10.3 Examples	169
10.3.1 Configuring the Redirector	170
10.3.2 Configuring the PC Communications Software	170
11: Security	172
11.1 Incoming Authentication	172
11.1.1 Character Mode Logins	172
11.1.1.1 Login Password	172
11.1.1.2 Username/Password Pair	173
11.1.1.3 Local Password	173
11.1.2 PPP Logins	174
11.1.2.1 CHAP and PAP	174
11.1.2.2 Comparing Username/Password to Authentication Databases	174
11.1.2.3 Offering Authentication Information to the Incoming Caller	174
11.1.3 SLIP Logins	175
11.2 Outgoing Authentication	175
11.2.1 Outgoing Character Mode Connections	176
11.2.2 Outgoing PPP Connections	176
11.2.3 Outgoing SLIP Connections	176
11.3 Dialback	176
11.3.1 The Dialback Process	177
1 When a username is entered on a dialback port, the SCS determines if it should allow the connec...	177
2 The SCS sends a command to the applicable serial port. The command contains the modem command p...	177
3 The dial string should perform any special configuration required for the call, then dial the r...	177
4 The SCS waits the length of the Carrier Wait setting for the DCD signal to go high, indicating ...	177
5 The SCS waits 30 seconds for the user to enter a username when in Dialback mode. After 30 secon...	177