ADTRAN Stub Routing Spezifikationen PDF herunterladen (Seite 198)

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101

Global Configuration Mode Command Set Command Reference Guide

ip firewall check winnuke

Use the ip firewall check winnuke command to enable the ADTRAN OS stateful inspection firewall to

discard all Out of Band (OOB) data (to protect against WinNuke attacks). Use the no form of this

command to disable this feature.

The ADTRAN OS security features must be enabled (using the ip firewall command) for

the stateful inspection firewall to be activated.

Syntax Description

No subcommands

Default Values

All ADTRAN OS security features are disabled by default until the ip firewall command is issued at the

the Global Configuration prompt. Issuing the ip firewall command enables the WinNuke check.

Command Modes

(config)# Global Configuration Mode

Command History

Release 2.1 Command was introduced

Functional Notes

WinNuke attack is a well-known denial of service attack on hosts running Windows

operating systems. An

intruder sends Out of Band (OOB) data over an established connection to a Windows user. Windows cannot

properly handle the OOB data and the host reacts unpredictably. Normal shut-down of the hosts will generally

return all functionality. Using the

ip firewall check winnuke

command configures the ADTRAN OS stateful

inspection firewall to filter all OOB data to prevent network problems.

Usage Examples

The following example enables the firewall to filter all OOB data:

(config)#

ip firewall check winnuke

1 2 ... 193 194 195 196 197 198 199 200 201 202 203 ... 567 568

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