Ssh/Ssl; Inbound Telnet Control; Denial Of Service; Port Protection - Dell PowerConnect 8024 User Configuration Manual

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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.

For information about configuring SSH and SSL settings, see "Configuring

Authentication, Authorization, and Accounting" on page 177.

You can configure the switch to prevent new Telnet sessions from being

established with the switch. Additionally, the Telnet port number is

configurable.

For information about configuring inbound Telnet settings, see "Configuring

Authentication, Authorization, and Accounting" on page 177.

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 457.

A port may be put into the disabled state for any of the following reasons:

BPDU Storm Protection: By default, if Spanning Tree Protocol (STP)

bridge protocol data units (BPDUs) are received at a rate of 15pps or

greater for three consecutive seconds on a port, the port will be

diagnostically disabled. The threshold is not configurable.

DHCP Snooping: If DHCP packets are received on a port at a rate that

exceeds 15 pps, the port will be diagnostically disabled. The threshold is

configurable up to 300 pps for up to 15s long using the ip dhcp

snooping limit command. DHCP snooping is disabled by default.

The default protection limit is 15 pps.

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