Exercises, examples and other material relating to training module A052. This module is presented on Private Courses
and Specially Run Courses
Whether you're working local computers or on the internet,
you'll be networked these days. Networking comprises a whole
series of layers of protocols - from the physical to the
packet transfer and up to the application specific. And the
idea of 'the whole' is that you can send information from your
computer to another that may be half a world away, know it will
get there, and get the answer back. Truly remarkable how it
works, when you consider it's like a postal system with lots
of routers along the way that gets you an answer in milliseconds.
Related technical and longer articlesWhat are NIS, LDAP, DNS and BINDFirewall fundamentals - Linux
|Articles and tips on this subject||updated|
|2695||TCP v UDP / Client v Server - Python examples|
Python's socket module makes it easy for you to write your own clients and server ... and yesterday I produced "Hello World" style examples of each on the final day of our Python Programming Course. I'm going to share these examples with you here ... but I'm also going to add a word of caution first ...
|2149||Routing Network Traffic - Proxies, Redirects and DNS|
If you point a domain at web server "X" when it's really hosted on web server "Y", you can either have web server "X" forward the request as a proxy, or you can have server "X" instruct the browser to try "Y" instead ... that's a redirect.
Which is best? A proxy forward hides server "Y" from the browser, ...
|2150||Routers, Firewalls and multilayer servers|
We only have one IP address at Well House Manor, but lots of computers. How does that work?
Internally, all our machines are on 192.168.200.xxx network but the router re-writes those to our single IP address on output, and for traffic where the client is at our place (that's most traffic such as web ...
|768||Our new .eu top level domain|
I'm in the UK this week, then out of the country again for a few days at the start of the following week. With this business pattern, we've often faced the conundrum "which top level domain should we bs using" and years ago we fixed on .net, since we're providing services relevant to the internet and ...
Some modules are available for download
as a sample of our material or under an Open Training Notes License
for free download from http://www.training-notes.co.uk
Topics covered in this module
The 7 layer model.
IP4 and IP6 protocol; TCP and UDP.
Routers and gateways.
Domains and name resolution.
Ports and the protocols they use.
Data packets and Remote Procedure calls.
Video and Voice over IP.
If you are looking for a complete course and not just a information on a single subject, visit our Listing and schedule
Well House Consultants specialise in training courses in
Linux and LAMP
. We run
throughout the UK (and beyond for longer courses), and
at our training centre in Melksham, Wiltshire, England.
It's surprisingly cost effective to come on our public courses -
even if you live in a different
country or continent to us
We have a technical library of over 700 books on the subjects on which we teach.
These books are available for reference at our training centre. Also
available is the Opentalk
Forum for discussion of technical questions.