Introduction 30
IOLAN Features
z‘Fixed tty’ support for several operating systems using Perle’s TruePort utility.
zDHCP/BOOTP for automated network-based setup.
zDynamic statistics and line status information for fast problem diagnosis.
zMultisession support when accessing the IOLAN from either the serial port or the network.
zModbus master/slave/gateway support.
zAn SDK for custom programs and plugin support.
zI/O interface on the IOLAN I/O models (Analog, Temperature, Digital, and Relay).
zAbility to disable services (for example, Telnet, TruePort, Syslog, SNMP, Modbus, HTTP) for
additional security.
zAbility to enable Ping responses.

Advanced Features

Advanced IOLAN software features can be found on all IOLAN models except DS and TS models.
zExternal authentication using any of the following systems:
–RADIUS
–Kerberos
–TACACS+
–NIS
–SecurID
–LDAP/Microsoft Active Directory
zSupport for TCP/IP and UDP protocols.
zDynamic DNS with DYNDNS.org.
zDomain Name Server (DNS) support.
zWINS support for Windows® environments.
zRemote access support including PPP, SLIP, and SLIP with VJ Compression.
zAbility to remotely manage the Perle Remote Power Switch (RPS).
zAbility to cluster several IOLANs.
zEmail alert notification.
zPPP authentication via PAP /CHAP/ MSCHAP.
zSSH connections (supported ciphers are Blowfish, 3DES, AES, CAST128, and Arcfour).
zSSL/TLS connections.
zLogging via Syslog.
zRIP authentication (via password or MD5).
zSNTP (versions 1, 2, 3, and 4 are supported).
Security
The IOLAN security features can include (depending on your IOLAN model):
zSupervisory and serial port password protection.
zAbility to set serial port access rights.
zAbility to assign users access level rights to control their access.
zTrusted host filtering (IP filtering), allowing only those hosts that have been configured in the
IOLAN access to the IOLAN.
zIdle port timers, which close a connection that has not been active for a specified period of time.
zAbility to individually disable network services that won’t be used by the IOLAN.