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Web Application Deployment module A052
Networking - General
Exercises, examples and other material relating to training module A052. This module is presented on Private Courses and Specially Run Courses only

Background
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 articles
What are NIS, LDAP, DNS and BIND
Firewall fundamentals - Linux

Articles and tips on this subjectupdated
2695TCP 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 ...
2010-03-26
 
2149Routing 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, ...
2009-05-02
 
2150Routers, 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 ...
2009-05-02
 
768Our 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 ...
2006-06-18
 
Background information
Some modules are available for download as a sample of our material or under an Open Training Notes License for free download from [here].
Topics covered in this module
The 7 layer model.
Phyical connections.
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.
Complete learning
If you are looking for a complete course and not just a information on a single subject, visit our Listing and schedule page.

Well House Consultants specialise in training courses in Linux and LAMP,Ruby, Lua, Python, Perl, PHP, and MySQL. We run Private Courses throughout the UK (and beyond for longer courses), and Public Courses 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.


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