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For 2023 - we are now fully retired from IT training.
We have made many, many friends over 25 years of teaching about Python, Tcl, Perl, PHP, Lua, Java, C and C++ - and MySQL, Linux and Solaris/SunOS too. Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own risk.

Lisa and I (Graham) now live in what was our training centre in Melksham - happy to meet with former delegates here - but do check ahead before coming round. We are far from inactive - rather, enjoying the times that we are retired but still healthy enough in mind and body to be active!

I am also active in many other area and still look after a lot of web sites - you can find an index ((here))

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Web Application Deployment module A192
Exercises, examples and other material relating to training module A192. This topic is presented on public course Linux bootcamp

Related technical and longer articles
Firewall fundamentals - Linux

Articles and tips on this subjectupdated
3680How can I run multiple web servers behind a single IP address?
Scenario ... from last week's Linux course. I have several web servers on my network which I want to make publicly available. However, I only have a single incoming IP address, so all incoming web requests go to a single computer in my network. What can I do about this? Option 1 - keep all the web ...
3679Setting up your Linux system as a firewall using iptables
During last week's Linux course (a private one) we took a look at firewalls using iptables. iptables can be run on an individual Linux machine, controlling the traffic that's allowed in and out, and turning that machine into its own firewall: * INPUT rules control the outside agents that can contact ...
806Check your user is human. Have him retype a word in a graphic
Do you have trouble with automated programs completing forms on your websites and making cart loads of submissions? Or even just a few spammers submitting their betting ads, performance enhancing pill sites, and share purchase suggestions? And yet you don't want to have to have anyone who wants to ...
A Splash page is the ultimate home page. When I'm away (as I am this week) and I connect in via a hotel network, the first page that I'm offered is the hotel supplier's - no matter what URL I've asked for. Only when I complete a login form (which will involve giving an account and password number, ...
Examples from our training material
chaingang   sample iptables for firewalling a web server
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
Routing, Firewalls and IP rewriters.
Port probing.
NAT and DMZ.
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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