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Router Configuration Guide for www.ekhaneipabo.com
This guide provides step-by-step instructions to configure a Cisco router with basic settings, including hostname, AAA authentication, SSH, and static routing.
1. Set Hostname
Configure the router's hostname to identify it on the network.
Router> enable Router# configure terminal Router(config)# hostname Router-A
2. Configure AAA Authentication
Enable AAA (Authentication, Authorization, and Accounting) for secure access control.
Router-A(config)# aaa new-model Router-A(config)# aaa authentication login default local Router-A(config)# aaa authentication enable default enable
3. Create User and Enable Secret
Add a local user and set an enable secret password for privileged access.
Router-A(config)# enable secret 5 123 Router-A(config)# username admin secret 5 123
4. Configure SSH Access
Set up SSH for secure remote management.
- Set Domain Name:
Router-A(config)# ip domain-name network.com
- Generate RSA Keys:
Router-A(config)# crypto key generate rsa
- Key modulus size: 2048 (recommended for security).
- Enable SSH Version 2:
Router-A(config)# ip ssh version 2
- Configure VTY Lines for SSH:
Router-A(config)# line vty 0 4 Router-A(config-line)# transport input ssh Router-A(config-line)# login local Router-A(config-line)# exit
5. Configure Static Routing
Add a static route to direct traffic to a specific network.
Router-A(config)# ip route 192.168.200.0 255.255.255.0 10.0.0.2 1
6. Save Configuration
Save the configuration to ensure it persists after a reboot.
Router-A# write memory
Verification Commands
Use these commands to verify your configuration:
- Check SSH Configuration:
Router-A# show ip ssh
- Verify Static Routes:
Router-A# show ip route
- Test SSH Access:
- Use an SSH client (e.g., PuTTY) to connect to the router's IP address.
Troubleshooting Tips
- Ensure the router's interface IP addresses are correctly configured.
- Verify that the SSH service is enabled and accessible from the network.
- Check for any firewall rules blocking SSH traffic.
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