The network device must not use the default or well-known SNMP community strings public and private.

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The network device must not use the default or well-known SNMP community strings public and private.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-3210	NET1665	SV-3210r4_rule	ECSC-1 IAIA-1 IAIA-2	High

Description
Network devices may be distributed by the vendor pre-configured with an SNMP agent using the well-known SNMP community strings public for read only and private for read and write authorization. An attacker can obtain information about a network device using the read community string "public". In addition, an attacker can change a system configuration using the write community string "private".

STIG	Date
Perimeter Router Security Technical Implementation Guide Cisco	2016-01-04

Details

Check Text ( C-3822r7_chk )
Review the network devices configuration and verify if either of the SNMP community strings "public" or "private" is being used. If default or well-known community strings are used for SNMP, this is a finding.

Fix Text (F-3235r4_fix)
Configure unique SNMP community strings replacing the default community strings.