Perle Systems Iolan Sds4 Hl Device Server 4030370 ユーザーズマニュアル

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Introduction 30
IOLAN Features
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‘Fixed tty’ support for several operating systems using Perle’s TruePort utility.
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DHCP/BOOTP for automated network-based setup.
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Dynamic statistics and line status information for fast problem diagnosis.
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Multisession support when accessing the IOLAN from either the serial port or the network.
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Modbus master/slave/gateway support.
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An SDK for custom programs and plugin support.
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I/O interface on the IOLAN I/O models (Analog, Temperature, Digital, and Relay).
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Ability to disable services (for example, Telnet, TruePort, Syslog, SNMP, Modbus, HTTP) for 
additional security.
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Ability to enable Ping responses.
Advanced Features
Advanced IOLAN software features can be found on all IOLAN models except DS and TS models.
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External authentication using any of the following systems:
RADIUS
Kerberos
TACACS+
NIS
SecurID
LDAP/Microsoft Active Directory
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Support for TCP/IP and UDP protocols.
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Dynamic DNS with DYNDNS.org.
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Domain Name Server (DNS) support.
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WINS support for Windows
®
 environments.
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Remote access support including PPP, SLIP, and SLIP with VJ Compression.
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Ability to remotely manage the Perle Remote Power Switch (RPS).
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Ability to cluster several IOLANs.
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Email alert notification.
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PPP authentication via PAP /CHAP/ MSCHAP.
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SSH connections (supported ciphers are Blowfish, 3DES, AES, CAST128, and Arcfour).
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SSL/TLS connections.
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Logging via Syslog.
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RIP authentication (via password or MD5).
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SNTP (versions 1, 2, 3, and 4 are supported).
Security
The IOLAN security features can include (depending on your IOLAN model):
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Supervisory and serial port password protection.
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Ability to set serial port access rights.
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Ability to assign users access level rights to control their access.
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Trusted host filtering (IP filtering), allowing only those hosts that have been configured in the 
IOLAN access to the IOLAN.
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Idle port timers, which close a connection that has not been active for a specified period of time.
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Ability to individually disable network services that won’t be used by the IOLAN.