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You Should Know:
Network Design & Implementation with Cisco ACI
Cisco Application Centric Infrastructure (ACI) is crucial for modern data center networking. Here are key commands and configurations:
Basic ACI Setup
<h1>Access ACI CLI</h1> ssh admin@<ACI-Controller-IP> <h1>Create a Tenant</h1> aci# configure aci(config)# tenant CyberSecurity aci(config-tenant)# exit <h1>Create an Application Profile</h1> aci(config)# application CyberApp aci(config-application)# exit
#### **VLAN & EPG Configuration**
<h1>Create a Bridge Domain</h1> aci(config)# bridge-domain SECURE_BD aci(config-bd)# exit <h1>Create an Endpoint Group (EPG)</h1> aci(config)# epg SECURE_EPG aci(config-epg)# bridge-domain SECURE_BD aci(config-epg)# exit
### **Firepower Threat Defense (FTD) & FMC**
#### **Initial FTD Setup**
<h1>Connect to FTD CLI</h1> <blockquote> configure network manager add <FMC-IP> <Registration-Key> </blockquote> <h1>Verify FTD-FMC Connectivity</h1> <blockquote> show managers
#### **IPS Configuration via FMC**
- Log in to FMC Web UI (
https://<FMC-IP>). - Navigate to Policies → Intrusion → Create Policy.
3. Apply to FTD device.
### **Disaster Recovery & High Availability**
#### **Cisco ASA/FTD Failover**
<h1>Enable Failover</h1> ASA# configure failover ASA(config-failover)# failover lan unit primary ASA(config-failover)# failover lan interface failover GigabitEthernet0/2 ASA(config-failover)# failover key <SecretKey>
#### **VRRP for Router Redundancy**
<h1>Configure VRRP on Cisco Router</h1> Router(config)# interface GigabitEthernet0/0 Router(config-if)# vrrp 1 ip 192.168.1.1 Router(config-if)# vrrp 1 priority 150
### **Routing & Switching (CCIE-Level Commands)**
#### **OSPF & BGP Configuration**
<h1>OSPF Setup</h1> Router(config)# router ospf 1 Router(config-router)# network 10.0.0.0 0.255.255.255 area 0 <h1>BGP Peering</h1> Router(config)# router bgp 65001 Router(config-router)# neighbor 203.0.113.1 remote-as 65002
#### **Switch Port Security**
<h1>Enable Port Security</h1> Switch(config)# interface GigabitEthernet1/0/1 Switch(config-if)# switchport port-security Switch(config-if)# switchport port-security maximum 2
### **What Undercode Say**
A **Network Security Engineer** must master:
- Cisco ACI for software-defined networking.
- FTD/FMC for threat prevention.
- Disaster Recovery (VRRP, Failover).
- CCIE-Level Routing (OSPF, BGP).
- Firewall Hardening (ASA, Fortigate).
<h1>Check Network Health</h1> ping 8.8.8.8 traceroute google.com netstat -tuln
**Expected Output:**
[/bash]
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=117 time=9.18 ms
[bash]
References:
Reported By: Sakeena Bano – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
