Home Accessibility Courses Twitter The Mouth Facebook Resources Site Map About Us Contact
 
For 2021 - online Python 3 training - see ((here)).

Our plans were to retire in summer 2020 and see the world, but Coronavirus has lead us into a lot of lockdown programming in Python 3 and PHP 7.
We can now offer tailored online training - small groups, real tutors - works really well for groups of 4 to 14 delegates. Anywhere in the world; course language English.

Please ask about private 'maintenance' training for Python 2, Tcl, Perl, PHP, Lua, etc.
How 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 sites on one computer (it might be easier that way anyway, for robusteness / maintainance / security / uptime considerations) and use virtual hosting. You can find our virtual hosting resources [here].

Option 2 - use an intelligent incoming router. But either this will need to be quite a sophisticated box which analyses the traffic coming in on port 80 or you'll have to use different port numbers for your various web servers and then you can rewrite them as they come in - so this means that the setup won't be transparent to external visitors.

Option 3 - have all web traffic coming to a single computer running Apache httpd with mod_proxy, forwarding traffic to each of the real servers on a per-domain basis. You can find our mod_proxy resources [here].

Diagram showing how multiple web servers can be hosted on a network which itself has only a single world-accessible IP address

(written 2012-04-02, updated 2012-04-07)

 
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
A608 - Web Application Deployment - Apache httpd mod_proxy
  [631] Apache httpd to Tomcat - jk v proxy - (2006-03-03)
  [934] Clustering, load balancing, mod_rewrite and mod_proxy - (2006-11-21)
  [1006] Apache httpd and Apache Tomcat together tips - (2006-12-24)
  [1121] Sharing the load with Apache httpd and perhaps Tomcat - (2007-03-29)
  [1376] Choosing between mod_proxy and mod_rewrite - (2007-10-02)
  [1566] Strange behaviour of web directory requests without a trailing slash - (2008-03-06)
  [1767] mod_proxy and mod_proxy_ajp - httpd - (2008-08-22)
  [1939] mod_proxy_ajp and mod_proxy_balancer examples - (2008-12-13)
  [1944] Forwarding session and cookie requests from httpd to Tomcat - (2008-12-14)
  [2062] Virtual hosting and mod_proxy forwarding of different domains (httpd) - (2009-03-01)
  [2273] Three recent questions on Tomcat Convertors - (2009-07-07)
  [2325] Apache, Tomcat, mod_proxy - (2009-08-06)
  [2482] Load balancing with sticky sessions (httpd / Tomcat) - (2009-10-29)
  [3293] Distributing the server load - yet ensuring that each user return to the same system (Apache httpd and Tomcat) - (2011-05-18)
  [3339] Simplest ever proxy configuration? - (2011-06-28)
  [3892] Distributed, Balanced and Clustered Load Sharing - the difference - (2012-10-13)

A192 - Web Application Deployment - Firewalls
  [770] Splash! - (2006-06-20)
  [806] Check your user is human. Have him retype a word in a graphic - (2006-07-17)
  [3679] Setting up your Linux system as a firewall using iptables - (2012-04-02)


Back to
Setting up your Linux system as a firewall using iptables
Previous and next
or
Horse's mouth home
Forward to
Kicking up a stink, the Victorian way?
Some other Articles
Once upon a Maundy Thursday
Weak references in Lua - what are they, and why use them?
Melksham Business Newsreel
Kicking up a stink, the Victorian way?
How can I run multiple web servers behind a single IP address?
Potteries and Staffordshire in the Sunshine
Some advise for guest speakers at meetings
Rising prices, changing habits and society
Spring 2012
4759 posts, page by page
Link to page ... 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96 at 50 posts per page


This is a page archived from The Horse's Mouth at http://www.wellho.net/horse/ - the diary and writings of Graham Ellis. Every attempt was made to provide current information at the time the page was written, but things do move forward in our business - new software releases, price changes, new techniques. Please check back via our main site for current courses, prices, versions, etc - any mention of a price in "The Horse's Mouth" cannot be taken as an offer to supply at that price.

Link to Ezine home page (for reading).
Link to Blogging home page (to add comments).

You can Add a comment or ranking to this page

© WELL HOUSE CONSULTANTS LTD., 2021: 48 Spa Road • Melksham, Wiltshire • United Kingdom • SN12 7NY
PH: 01144 1225 708225 • EMAIL: info@wellho.net • WEB: http://www.wellho.net • SKYPE: wellho

PAGE: http://www.wellho.net/mouth/3680_How ... ress-.html • PAGE BUILT: Sun Oct 11 16:07:41 2020 • BUILD SYSTEM: JelliaJamb