nwdiag - simple network-diagram image generatorsΒΆ

nwdiag generates network-diagram image file from .diag file. .diag file is similar to DOT file (graphviz’s).

You can get diagrams like this.

And, nwdiag package includes more scripts called rackdiag and packetdiag .

rackdiag generates rack-structure diagram images:

packetdiag generates packet header diagram images:

blockdiag 0 8 16 Source Port Destination Port Sequence Number AckNo Offset Reserved