Advanced Cisco Network Security: How to Configure Network Infrastructure Security Online Training

Network infrastructure security failures often start with preventable gaps: unauthorized switch access, weak Layer 2 controls, unprotected routing adjacencies, or inconsistent device hardening. IT Directors can assign this associate-level Cisco course to network security admins with roughly three to five years of Cisco security experience who need practical depth across infrastructure protections.

The training is about 10 hours 32 minutes per learner, making it a realistic multi-week upskilling path alongside operational work. Team Leads can use it to standardize how admins approach DHCP snooping, port security, private VLANs, VRF-lite, TrustSec, infrastructure device hardening, and routing protocol authentication. For change management, this course is best assigned to practitioners who already understand Cisco networking fundamentals and can apply security controls without disrupting production connectivity.

CBT Nuggets Playlists can help Training Managers sequence this course with adjacent Cisco security training, while Team Reporting helps IT leaders track completion across the team.

IT teams complete this training to reduce infrastructure risk across Cisco networks by improving how admins configure, harden, and troubleshoot security controls on switches, routers, and routing protocols.

• Reduce unauthorized access risk by building team skill in Cisco IPv4 DHCP snooping, Layer 2 port security, and additional Layer 2 security controls.
• Improve segmentation practices by preparing admins to work with private VLANs and VRF-lite in environments that need separation between users, services, or traffic domains.
• Strengthen infrastructure consistency by reinforcing device-hardening practices that protect network equipment from unauthorized access or modification.
• Shorten routing-authentication troubleshooting by giving practitioners focused practice with EIGRP neighbor relationships and OSPF authentication issues for both IPv4 and IPv6.

Knowledge

• How Cisco IPv4 DHCP snooping supports infrastructure security.
• Where Layer 2 port security and other Layer 2 controls fit in a defense plan.
• How private VLANs and VRF-lite contribute to traffic separation.
• Core concepts behind network infrastructure device hardening.
• How Cisco TrustSec fits into access control and infrastructure security.
• How EIGRP and OSPF authentication affect routing adjacencies.

Ability

• Configure Cisco IPv4 DHCP snooping as part of a network security plan.
• Apply Layer 2 port security and related Layer 2 protections.
• Configure private VLANs and VRF-lite for segmented network designs.
• Harden Cisco infrastructure devices against unauthorized access and modification.
• Configure Cisco TrustSec controls covered in the course.
• Troubleshoot EIGRP neighbor authentication and OSPF authentication for IPv4 and IPv6.