Implementing Network Services

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Goals

• Compare and contrast transport protocols.
• Use command line tools to scan network ports.
• Explain the use of network addressing services.
• Explain the use of name resolution services.
• Configure and troubleshoot DHCP and DNS services.

Transport and Application Layer Protocols

• Transport Layer Ports and Connections
• Transmission Control Protocol (TCP)
• TCP Handshake and Teardown
• User Datagram Protocol (UDP)
• netstat
• Common TCP and UDP Ports

Dynamic Host Configuration Protocol (DHCP)

• DHCP Process
• DHCP Server Configuration
• DHCP Options
• DHCP Reservations and Exclusions

APIPA and SLAAC

• Automatic Private IP Addressing (APIPA)
• IPv6 Interface Autoconfiguration and Testing
• DHCPv6 Server Configuration

DHCP Relay and Troubleshooting

• DHCP Relay and IP Helper
• DHCP Issues

Domain Name System (DNS)

• Host Names and Domain Names
• DNS Hierarchy
• DNS Name Resolution
• DNS Resource Records
  • Host Address and Canonical Name (CNAME) Records
  • Mail Exchange (MX) Records
  • Service (SRV) Records
  • Text (TXT) Records
  • Pointer (PTR) Records
• DNS Server Configuration
• Internal vs External DNS
• DNS Security

DNS Troubleshooting

• DNS Client Issues
• Name Resolution Issues
• nslookup
• dig