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Linux, hardware, and network administration
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Module 9
Network Troubleshooting and Security
1
Diagnosing Host Connectivity with Network Tools
Troubleshoot host connectivity issues using `ip`, `ping`, `traceroute`, and `mtr` to isolate the point of failure.
Packet Capture Analysis: Diagnosing Protocol Issues
Analyze a packet capture to diagnose a common protocol issue, such as a failed TCP handshake or DNS resolution error.
3
Netfilter/iptables: Basic Firewall Configuration
Explain the netfilter/iptables architecture and write basic firewall rules to allow or block traffic.
4
Troubleshooting Firewall Connectivity with Iptables
Diagnose and resolve firewall-related connectivity issues by inspecting iptables rules on a Linux server.
Troubleshooting Layer 2/3 Network Issues
Diagnose and resolve common Layer 2/3 issues, including IP address conflicts and VLAN misconfigurations.
6
Device Configuration Backup & Restore
Back up and restore a network device's configuration.
7
Firmware Upgrade and Verification
Perform a firmware upgrade on a network device and verify successful installation.
8
Monitoring Network Devices with SNMP
Use SNMP to monitor interface utilization and interpret error counters on a network device.
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Network Switching and Routing
Next module
Data Center Operations and Deployment