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Configuration Guide - Security

CloudEngine 8800, 7800, 6800, and 5800 V200R005C10

This document describes the configurations of Security, including ACL, local attack defense, MFF, attack defense, traffic suppression and storm control, ARP security, Port security, DHCP snooping, ND snooping, PPPoE+, IPSG, SAVI, separating the management plane from the service plane, security risks.
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Filtering Routes with ACLs

Filtering Routes with ACLs

ACLs can be used to filter advertised and received routes of various dynamic routing protocols. For example, enterprise users access the Internet using a switch. Some users, such as R&D staff members, need to be prohibited from accessing the Internet, and some servers such as salary query servers reject external access to ensure information security. To meet the preceding requirements, define ACL rules on the switch connected to the Internet to filter certain packets.

Figure 3-1 Filtering routes with ACLs

As shown in Figure 3-1, SwitchA connects the intranet running Open Shortest Path First (OSPF) to the Internet. ACLs are defined on SwitchA and applied to OSPF to control route advertisement and receiving. The ACL specifies the following rules:

  • SwitchA only advertises routes 10.1.17.0/24, 10.1.18.0/24, and 10.1.19.0/24 to SwitchB.

  • SwitchC only receives the route 10.1.18.0/24.

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Updated: 2019-04-20

Document ID: EDOC1100074765

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