Cisco CBRFIR (300-215) case studies
Cisco CBRFIR (300-215) · Put your knowledge to work in context.
Cisco CBRFIR (300-215) is a concentration exam within Cisco's security certification track. The source material available does not state official logistics such as item count, time limit, passing score, fee, or validity period; those fields remain null and must be verified on Cisco's exam page. The exam targets security engineers and firewall administrators who deploy and operate Cisco Secure Firewall solutions. Based on the published domain structure, the exam is evenly split across five areas: firewall fundamentals and architecture; deployment and initial configuration; access control and prefilter policies; intrusion prevention, malware, and file policies; and troubleshooting, monitoring, and operations. The Cisco CBRFIR (300-215) case studies are 5 cases and about 2,959 words.
1Management Network Overlap in an Active/Standby Pair
A regional office runs a pair of Cisco Secure Firewall 2130 appliances in active/standby HA. The inside network is 10.20.0.0/16 on Ethernet1/1, outside is 203.0.113.0/24 on Ethernet1/2, the failover link is Ethernet1/3, and the state link is Ethernet1/4.
598 words, about 3 min2PAT Capacity and Logging After an ASA-to-FTD Cutover
A university replaces an ASA with a Cisco Secure Firewall 3105 HA pair. The inside network is 10.50.0.0/16 with about 4,000 concurrent users; outside is 198.51.100.0/24.
590 words, about 3 min3Prefilter Fastpath Overrides a Guest Block Rule
A retail chain has guest Wi-Fi on 10.60.20.0/24 and corporate users on 10.60.10.0/24. To reduce load on a Cisco Secure Firewall 2140, the access control policy has a prefilter rule above all others: source 10.60.20.0/24, destination 198.51.100.0/24, a SaaS provider, action Fastpath.
580 words, about 3 min4IPS Noise and an Uninspected PDF on the Guest VLAN
A company runs FTD 7.2 with FMC. The internal web server 10.70.5.20 is scanned nightly by Qualys at 10.70.9.50.
631 words, about 3 min5Dual-ISP ECMP Causes Asymmetric Return Traffic
An FTD 2130 pair in HA at a distribution site has two outside interfaces: ISP-A 198.51.100.2/24 and ISP-B 203.0.113.2/24. Both providers advertise a default route, and the FTD has two equal-cost static defaults with the same administrative distance.
560 words, about 3 min