When working with Extended Access Control Lists (ACL), we can specify TCP and UDP port numbers to permit or deny. To filter the traffic based on TCP or UDP port numbers, we can use an operator. The operator is used to match the port number or numbers in Access Control Lists. The following table lists important Extended Access Control List operators.

 

Operator	Description
lt	Less than
gt	Greater than
neq	Not equal to
eq	Equal to
range	Range of port numbers

 

Related Topics...

• Introduction to Access Control Lists (ACL)

• Standard Access Control Lists (ACLs)

• Where should a Standard Access Control List (ACL) be placed

• Access Control List (ACL) - Wildcard Masks

• How to create and configure Standard Access Control Lists (ACLs)

• Extended Access Control Lists (ACLs)

• Where should an Extended Access Control List (ACL) be placed

• Extended Access Control List (ACL) - TCP and UDP port numbers and names

• Extended Access Control List (ACL)- established Keyword

• How to create and configure Extended Access Control Lists (ACLs)

• How to create and configure Access Control Lists (ACLs) for vty lines (telnet and ssh)

• Named Access Control Lists (ACLs)

• How to create and configure Standard Named Access Control Lists (ACLs)

• How to create and configure Extended Named Access Control List (ACL)

• How to edit a Named Access Control List (ACL) on router