Edge-Core ECS4210-12P User Manual

Chapter 9 | Access Control Lists
IPv4 ACLs
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For example, use the code value and mask below to catch packets with the
following flags set:
■
SYN flag valid, use “control-code 2 2”
■
Both SYN and ACK valid, use “control-code 18 18”
■
SYN valid and ACK invalid, use “control-code 2 18”
Example
This example accepts any incoming packets if the source address is within subnet
10.7.1.x. For example, if the rule is matched; i.e., the rule (10.7.1.0 & 255.255.255.0)
equals the masked address (10.7.1.2 & 255.255.255.0), the packet passes through.
Console(config-ext-acl)#permit 10.7.1.1 255.255.255.0 any
Console(config-ext-acl)#
This allows TCP packets from class C addresses 192.168.1.0 to any destination
address when set for destination TCP port 80 (i.e., HTTP).
Console(config-ext-acl)#permit 192.168.1.0 255.255.255.0 any destination-port
80
Console(config-ext-acl)#
This permits all TCP packets from class C addresses 192.168.1.0 with the TCP control
code set to “SYN.”
Console(config-ext-acl)#permit tcp 192.168.1.0 255.255.255.0 any control-
flag 2 2
Console(config-ext-acl)#
Related Commands
access-list ip (320)
Time Range (141)

Edge-Core ECS4210-12P Specifications

General

Brand	Edge-Core
Model	ECS4210-12P
Category	Network Router
Language	English

Summary

Section I Getting Started

Initial Switch Configuration

Information on connecting to the switch and basic configuration procedures.

Section II Command Line Interface

Using the Command Line Interface

Explains how to access and use the CLI, including console and Telnet connections.

Entering Commands

Details on entering CLI commands, including keywords, arguments, completion, and history.

CLI Command Groups

Categorizes system commands into functional groups like General, System Management, and SNMP.

Section III Appendices

Troubleshooting

Provides actions for common problems when accessing the management interface via Telnet, web browser, or serial connection.

Glossary

Defines key networking terms and acronyms used throughout the manual.