Secure Shell And Secure Copy; Xmodem; Jumbo Frames - HP ProLiant BL p-Class GbE2 User Manual

The GbE2 Interconnect Switch, acting as the RADIUS client, communicates to the RADIUS
server to authenticate and authorize a remote administrator using the protocol definitions
specified in Request For Comments (RFC) 2138 and 2866. Transactions between the client
and the RADIUS server are authenticated using a shared key that is not sent over the network.
In addition, the remote administrator passwords are sent encrypted between the RADIUS
client (the switch) and the back-end RADIUS server.
The benefits of using RADIUS are:
•
Authentication of remote administrators
•
Identification of the administrator using name/password
•
Authorization of remote administrators
•
Determination of the permitted actions and customizing service for individual
administrators

Secure Shell and Secure Copy

Secure Shell (SSH) and Secure Copy (SCP) use secure tunnels to encrypt and secure
messages between a remote administrator and the GbE2 Interconnect Switch. Telnet does not
provide this level of security. The Telnet method of managing a GbE2 Interconnect Switch
does not provide a secure connection.
SSH is a protocol that enables remote administrators to log securely into the GbE2
Interconnect Switch over a network to execute management commands.
SCP is typically used to copy files securely from one machine to another. SCP uses SSH for
encryption of data on the network. On a GbE2 Interconnect Switch, SCP is used to download
and upload the switch configuration via secure channels.

XModem

The GbE2 Interconnect Switch supports XModem for transferring files during direct dial-up
communications. XModem sends blocks of data in 128-byte blocks, and includes an error-
detection system called a checksum. When the data is received, the error detection system
ensures that the entire message reached its destination. If not, the receiving computer sends a
request for retransmission of the data.

Jumbo Frames

By default, the GbE2 Interconnect Switch module supports jumbo frames up to 9216 bytes,
which may help reduce server central processing unit (CPU) utilization and may increase
application throughput. No configuration is required. The GbE2 Interconnect Switch does not
fragment frames as they exit, or assemble packets into jumbo frames as they enter the switch.
HP ProLiant BL p-Class GbE2 Interconnect Switch User Guide
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Introduction
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