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Chapter 41 Security Feature Configuration
41.1 Introduction to Security
Feature
Before introducing the security features, we here first introduce the DoS. The DoS is short for
Denial of Service, which is a simple but effective destructive attack on the internet. The server
under DoS attack will drop normal user data packet due to non-stop processing the attacker’s
data packet, leading to the denial of the service and worse can lead to leak of sensitive data of
the server.
Security feature refers to applications such as protocol check which is for protecting the server
from attacks such as DoS. The protocol check allows the user to drop matched packets based
on specified conditions. The security features provide several simple and effective protections
against Dos attacks while acting no influence on the linear forwarding performance of the
switch.
41.2 Security Feature
Configuration
41.2.1 Prevent IP Spoofing Function Configuration Task Sequence
1. Enable the IP spoofing function.
[no] dosattack-check srcip-equal-dstip
enable
Enable/disable the function of checking if the IP
source address is the same as the destination
address.
41.2.2 Prevent TCP Unauthorized Label Attack Function
Configuration Task Sequence
1. Enable the anti TCP unauthorized label attack function
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