At the Webserver

Webserver

Software

TCP

Software

IP

Software

Subnet

Software

Webserver

Subnet

SnPDU

1. accepts SnPDU

IPDU

2. delivers IPDU

to IP Software Process

CPDU

3. IP Software delivers CPDU

to Transport Process

APDU

4. TCP Software delivers APDU

to Webserver Program

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