Full-Blown Internetwork Troubleshooting Guide
Warning, This guide requires somewhat deeper knowledge in Internetworking terms.
Let's start...
To simplify things, computer internetwork can be described as layered communication of computer network protocols. The one I use is "Open System Interconnection Reference Model", it divides computer internetworking into seven basic layers. These are the layers:
Application Layer (DNS, FTP, HTTP, NFS, AFP, SMB/CIFS, SSH, Telnet, etc)
Presentation Layer (MIME, etc)
Session Layer (NetBIOS, Named Pipes, etc)
Transport Layer (TCP, UDP, PPTP, SSL, TLS, SCTP, etc)
Network Layer (IP, ICMP, IGMP, IPsec, etc)
Data Link Layer (MAC address, Frame Relay, HDLC, etc)
Physical Layer (Ethernet...