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CLI-based Configuration Guide - Security

AR500, AR510, and AR530 V200R007

This document describes the configurations of Security, including AAA, DAA,NAC, BRAS Access, ACL, Firewall, Deep Security Defense, Local Attack Defense;Attack Defense, Traffic Suppression, ARP Security, Port Security, DHCP Snooping, IPSG, URPF, PKI, SSL, HTTPS, Keychain, separating the management plane from the service plane, security risks.
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This section describes the definition, background, and functions of PKI.


The public key infrastructure (PKI) is a key management platform. It provides key services including encryption and digit certificates and required key and certificate management system for all network applications. That is, PKI provides information security services using public key theories and technologies. PKI is the core of information security technologies and e-commerce.

Usage Scenarios

The PKI provides network communication and trade (especially e-government and e-commerce) with a set of transparent security services, including identity authentication, confidentiality, and data consistency and non-repudiation.

The PKI technology develops fast and is widely used. The following are common application scenarios of PKI:

  1. Virtual private network

    A virtual private network (VPN) is built on a public communications infrastructure. On a VPN, PKI's encryption and digital signature functions can work with network layer security protocols such as Internet Security (IPSec) to help protect data confidentiality.

  2. Email security

    PKI also helps ensure confidentiality, integrity, non-repudiation, and authentication of emails. It is the basis of secure email protocols, such as Secure/Multipurpose Internet Mail Extensions (S/MIME) that allows users to send encrypted emails with signatures.

  3. Web security

    Before two entities start to exchange data in a server/browser model, they establish a Secure Sockets Layer (SSL) connection. The SSL protocol uses the PKI technology to encrypt data exchanged between the browser and server. The server and browser use digital certificates to authenticate each other. This process is transparent to application layer protocols.


  • Benefits to users
    • The certificate authentication technology allows users to authenticate network devices to which they connect, ensuring that users connect to secure and legal networks.
    • The encryption technology protects data against tampering and eavesdropping so that data is transmitted securely on networks.
    • The digital signature technology ensures that data is accessible to only authorized devices and users, protecting data privacy.
  • Benefits to enterprises
    • PKI prevents unauthorized users from connecting to enterprise networks.
    • PKI establishes secure connections between enterprise branches to ensure data security.
Updated: 2019-05-25

Document ID: EDOC1000097287

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