Radius Support; Ssh/Ssl; Inbound Telnet Control; Denial Of Service - Dell Networking N4000 Series Configuration Manual

RADIUS Support

The switch has a Remote Authentication Dial In User Service (RADIUS)
client and can support up to 32 named authentication and accounting
RADIUS servers. The switch also supports RADIUS Attribute 4, which is the
configuration of a NAS-IP address. You can also configure the switch to
accept RADIUS-assigned VLANs.
For information about configuring RADIUS client settings, see "Configuring
Authentication, Authorization, and Accounting" on page 207.

SSH/SSL

The switch supports Secure Shell (SSH) for secure, remote connections to
the CLI and Secure Sockets Layer (SSL) to increase security when accessing
the web-based management interface. The SSH server can be enabled or
disabled using the ip ssh command.
For information about configuring SSH and SSL settings, see "Configuring
Authentication, Authorization, and Accounting" on page 207.

Inbound Telnet Control

By default, the switch allows access over Telnet. The administrator can enable
or disable the Telnet server using the ip telnet command. Additionally, the
Telnet port number is configurable using the same command.
For information about configuring inbound Telnet settings, see "Configuring
Authentication, Authorization, and Accounting" on page 207.

Denial of Service

The switch supports configurable Denial of Service (DoS) attack protection
for eight different types of attacks.
For information about configuring DoS settings, see "Configuring Port and
System Security" on page 503.

Port Protection

A port may be put into the diagnostically disabled state for any of the
following reasons:
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Switch Feature Overview