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The SCS provides various ways of accessing serial ports. This chapter includes
the following topics:
Topic Page
Telnet to Serial Port 9-1
IP Address per Serial Port Feature 9-5
Telnet to Serial Port Feature
This section describes how to set up and use the Telnet to a Serial Port feature
of the SCS. It assumes that you have otherwise configured the unit, and that the
console server has connectivity to the network.
The system administrator can assign the serial ports individual IP port numbers
and/or distinct IP addresses. You can disable authentication on the console
server for directly connected serial ports. This section discusses the setup, use,
and security considerations for port access.
Accessing Serial Ports
You can set up the Telnet to a Serial Port feature so that you can access a serial
port by entering a predefined IP port number on the Telnet client’s command line
or by using distinct IP addresses assigned to each serial port. You can set up the
console server in several simple steps.
The reason to use one access method or the other is site specific:
If your site has limited IP addresses available, then you may want to
define separate IP port numbers for the serial ports and use these
numbers in combination with the console server’s IP address.
If you have enough IP addresses available and would like to assign
names to each IP address (using your DNS server), then you may want
to define an IP address per serial port.
IP Port Numbers
If you assign an IP port number to a serial port, enter the full command on the
client machine to directly access the serial port:
$ Telnet console_server_ip_addr ip_port_number
or, if the name of the console server can be resolved to an IP address (DNS):
$ Telnet console_server_name ip_port_number
You must predetermine and establish the cross-reference of the console server
serial port number and the specific console server IP port number on the console
server. To access the proper port, users must be aware of this cross-reference.
If you are using multiple console servers, the IP port number assignments can be
the same on each console server. An example of this cross-reference is:
- SCSxx05/SCSxx20 1
- Secure Console Server 1
- User Guide 1
- Copyright & Trademark 2
- LINUX GPL Compliance 2
- Contacts 2
- Disclaimer & Revisions 3
- Safety Precautions 4
- Precauciones de seguridad 5
- Sicherheitshinweise 7
- Меры предосторожности 8
- Contents 16
- SCSxx05 and SCSxx20 21
- Hardware Features 23
- System Features 24
- Protocol Support 24
- System Components 25
- Connection Formats 25
- Access Control 26
- Device Port Buffer 27
- Technical Specifications 28
- Product Information Label 29
- System Resource Information 30
- Physical Installation 31
- AC Input 32
- DC Input 32
- Connecting a Terminal 33
- Connecting to a Device Port 34
- Connecting the Network Port 35
- Power Manager Interface 36
- Before You Begin 37
- Navigating 38
- Entering the Settings 38
- Method # 2- Using Telnet 40
- Accessing the Setup Menu 42
- Done Option 44
- Configuring Timezone 46
- Configuring DNS 48
- Configuring Services 49
- Configuring NTP 50
- Configuring Email Relay 51
- Configuring Timeouts 51
- Configuring CHAP Secrets 55
- Configuring PAP Secrets 56
- Configuring NIS 57
- Configuring LDAP 58
- Configuring RADIUS 59
- Configuring NFS Mount 60
- Configuring Device Ports 63
- Device Port Menu 64
- Device Port Names 64
- Device Port Parameters 65
- Device Logging Parameters 68
- Log file size (in bytes) 69
- Updating Software 72
- Using Done 74
- Rebooting 75
- Accessing the Web Interface 76
- Configurable Parameters 77
- Web Access Delay 78
- Saving Web Interface Entries 79
- Exiting 79
- Installing a Modem Card 80
- Initializing the Modem 80
- Security and Passwords 82
- Changing the Root Password 83
- User Access and Functions 84
- Terminal Port Access 85
- Modem Module 85
- Selecting a Device Port 85
- Direct Mode 86
- Logging Out 87
- Summary of Commands 88
- System Commands 89
- SCS4805 Shell V4.00 92
- Device Commands 94
- User Management Commands 96
- User Commands 99
- Advanced Sysadmin Commands 100
- Accessing Serial Ports 105
- Testing 108
- Saving the Changes to Flash 108
- Setting the IP Addresses 109
- Final Testing 112
- Bypassing Authentication 113
- SCSxx05 122
- SCSxx05 Adapters 123
- SCSxx20 132
- SCSxx20 Adapters 133
- Compliance Information (1) 138
- Compliance Information (2) 140
- Warranty 141
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