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Configuration Guide - Security

S7700 and S9700 V200R011C10

This document describes the configurations of Security, including ACL, reflective ACL, local attack defense, MFF, attack defense, traffic suppression and storm control, ARP security, port security, DHCP snooping, ND snooping, PPPoE+, IPSG, SAVI, URPF, keychain, separating the management plane from the service plane, security risks.
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What Are the Differences Between CA, Local, and Self-Signed Certificates?

What Are the Differences Between CA, Local, and Self-Signed Certificates?

The differences between CA, local, and self-signed certificates are described in Table 17-6.

Table 17-6  Certificate types
Type Definition Description

Self-signed certificate

A self-signed certificate, which is also called root certificate, is issued by an entity to itself. In this certificate, the issuer name and subject name are the same.

If an applicant fails to apply for a local certificate from the CA, it can generate a self-signed certificate. The self-signed certificate issuing process is simple.

A device does not support lifecycle management (such as certificate update and revocation) over its self-signed certificate. To ensure security of the device and certificate, you are advised to replace the self-signed certificate with the local certificate.

CA certificate

CA's own certificate. If a PKI system does not have a hierarchical CA structure, the CA certificate is the self-signed certificate. If a PKI system has a hierarchical CA structure, the top CA is the root CA, which owns a self-signed certificate.

An applicant trusts a CA by verifying its digital signature. Any applicant can obtain the CA's certificate (including the public key) to verify the local certificate issued by the CA.

Local certificate

A certificate issued by a CA to the applicant.

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Local device certificate

A certificate issued by a device to itself according to the certificate issued by the CA. The issuer name in the certificate is the CA server's name.

If an applicant fails to apply for a local certificate from the CA, it can generate a local device certificate. The local device certificate issuing process is simple.

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Updated: 2019-10-18

Document ID: EDOC1000178319

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