Local database configuration for user authentication. Module 6: Automation and Programmability
EdgeRouter(config)# ip nat inside source list INTERNAL_LAN interface gigabitethernet 0/1 overload EdgeRouter(config)# interface gigabitethernet 0/0 EdgeRouter(config-if)# ip nat inside EdgeRouter(config-if)# interface gigabitethernet 0/1 EdgeRouter(config-if)# ip nat outside Use code with caution. Step 3: Verify NAT Translations
show ip interface brief , show users , ssh -l admin 192.168.1.1
[ Router1 ] | (g0/0/0) | Trunk [ Switch1 ] / \ (fa0/1) (fa0/2) VLAN 10 VLAN 20 | | [ PC-A ] [ PC-B ] VLAN Allocation and Trunking Configuration Local database configuration for user authentication
Assigning IPv4 and IPv6 addresses to device interfaces. 2. Switching Technologies (LAN Switching)
R1(config)# ip access-list extended BLOCK_WEB R1(config-ext-nacl)# deny tcp 192.168.10.0 0.0.0.255 any eq 80 R1(config-ext-nacl)# deny tcp 192.168.10.0 0.0.0.255 any eq 443 R1(config-ext-nacl)# permit ip any any R1(config-ext-nacl)# exit R1(config)# interface gigabitEthernet 0/0 R1(config-if)# ip access-group BLOCK_WEB in Use code with caution. Verification Commands R1# show access-lists Use code with caution. Section 7: Building Your Own Printable PDF Guide
Bundling parallel links into Layer 2 and Layer 3 EtherChannels using LACP. Module 3: Routing Technologies (Layer 3) Section 7: Building Your Own Printable PDF Guide
Access Control Lists (ACLs) provide network filtration. Standard ACLs filter solely by source IP, while Extended ACLs filter by source, destination, protocol, and port number.
Assign PC 1's port to VLAN 10 and PC 2's port to VLAN 20.
Activate the OSPF process, manually assign a unique router ID, and advertise networks using precise wildcard masks. and Inter-VLAN Routing
Router(config)# interface g0/0 Router(config-if)# no shutdown Router(config)# interface g0/0.10 Router(config-subif)# encapsulation dot1Q 10 Router(config-subif)# ip address 192.168.10.1 255.255.255.0 Use code with caution.
Mastering the CCNA requires fluency in three fundamental networking tiers: switching, routing, and security. Follow these step-by-step configurations to build your foundational labs. Lab 1: Layer 2 Switching, VLANs, and Inter-VLAN Routing