It looks like you're using Ubuntu.
So, you can install Apache 2 with something like: "sudo apt-get install apache2"
After that, you'll be reading a bit. You'll need to configure apache and set up locations for your internal web space. You can find official documentation here
The simplest approach would be to place directories/files under /var/www and make sure the directories/files are readable by everyone.
To access, go to another machine on the same wireless network and type "http://<ip address of server>
" as the web address in your browser.
Replace <ip address of server>
with the IP address on the server (which you should be able to find by running "sudo ifconfig" on the server)
with the path and filename of the HTML page to load starting from /var/www (e.g. a web page stored at /var/www/testing/welcome.html would be reference by "http://<ip address of server>
If basic access does not work--refer to the documentation. There may be a directive in your configuration file (near the beginning) that denies access to computers other than
the computer running apache itself.
Lastly, keep in mind that if you want to use other web-based technologies (e.g. PHP), they are likely plugins/mods for apache that you will also need to install through your package manager.
I made the assumption that your internal wireless network does not have a DNS server running. If you do, and it's setup properly, then obviously you would not need to use the ip address of the server to access it. You could just use the normal hostname. Additionally, if all the computers involved have avahi (or an equivalent zero-config network setup), then you may be able to refer to the server by hostname alone as well (e.g. "http://mywebserver/testing/welcome.html