Soru

Zorluk: KolayNetwork Device Hardening Best Practices

A network technician is preparing to establish a secure management baseline on a newly unboxed switch prior to connecting it to the production network. Place the following administrative hardening steps in the correct chronological order from first to last.

  1. 1Change default administrative credentials and disable unencrypted management services such as Telnet and HTTP.
  2. 2Generate cryptographic key pairs and enable secure management protocols like SSH and HTTPS.
  3. 3Administratively shut down unused physical ports and reassign them to an isolated non-routable VLAN.
  4. 4Save the active running configuration to persistent startup memory (NVRAM).

Cevap

The baseline hardening process begins by changing default administrative passwords and removing cleartext services, followed by generating crypto keys to enable SSH/HTTPS. Next, unused ports are administratively disabled and isolated, and finally, the configuration is saved to NVRAM.
The correct chronological process begins with securing initial local access by changing default passwords and turning off insecure cleartext protocols (Telnet/HTTP). Next, cryptographic keys are generated to support encrypted management protocols (SSH/HTTPS). After secure management is enabled, physical switch ports are hardened by disabling unused interfaces and placing them in an isolated VLAN. Finally, the running configuration must be written to NVRAM so all security policies remain active across reboots.

Adım Adım Çözüm

1
Eliminate default access risks and cleartext services.
Default credentials are changed and Telnet/HTTP are disabled.
Prevents unauthorized baseline access and cleartext credential sniffing during device setup.
2
Configure encrypted management access.
SSH and HTTPS services are enabled using generated cryptographic keys.
Ensures all subsequent administrative interactions across the network are encrypted.
3
Harden unused physical interfaces.
Unused switch ports are shut down and assigned to an isolated VLAN.
Prevents unauthorized physical access and port-based network intrusion.
4
Persist configuration settings.
The running configuration is saved to startup-config in NVRAM.
Guarantees that all applied security controls persist through reboots in production.

Anahtar Kavram

Switch Baseline Hardening Sequence
Bu soruyu puanla