Искусственный интеллект, методы и технологии информационной безопасности
Международная научно-техническая конференция «Практическое применение технических и
цифровых технологий и их инновационных решений», ТАТУФФ, Фергана, 4 мая 2023 г.
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packet. A packet-filtering router uses rules to determine whether to permit or
deny traffic. A router can also perform packet filtering at Layer 4, the transport
layer.
An ACL is a sequential list of permit or deny statements. The last
statement of an ACL is always an implicit deny which blocks all traffic. To
prevent the implied deny any statement at the end of the ACL from blocking all
traffic, the
permit any
statement can be added.
When network traffic passes through an interface configured with an
ACL, the router compares the information within the packet against each entry,
in sequential order, to determine whether the packet matches one of the
statements. If a match is found, the packet is processed accordingly.
Using ACLs requires attention to detail and great care. Mistakes can be
costly in terms of downtime, troubleshooting efforts, and poor network service.
Before configuring an ACL, basic planning is required. The figure presents
guidelines that form the basis of an ACL best practices list.
References:
1.
Khusanova M. K. Network security and monitoring //Research
Focus. – 2022. – Т. 1. – №. 4. – С. 177-183.
2.
Khusanova M. K. Analysis of discrete convolution in the Matlab
program//Scientific progress. – 2021. – Т. 2. – №. 4. – С. 1023-
1028.
