Auditors find default SNMP community strings still enabled on routers that manage traffic for utility billing. Which hardening step is most urgent?
Select an answer to reveal the explanation.
Short Explanation
Default SNMP strings are the spare key taped under the mat—everybody in the industry knows to look. Rip them out, use authenticated management, and lock who can talk to the routers.
Full Explanation
Hardening network devices includes eliminating default credentials and community strings, preferring authenticated encrypted management such as SNMPv3 where SNMP is required, and restricting management plane sources. Default communities are widely known and can expose configuration and, depending on rights, permit unauthorized changes affecting municipal billing traffic.