Network

This page give the details of the network.

Network Layout

This page will show the network topology & proposals for network expansion / modification.
This is images is outdated--'RepRap' Matt 11:21, 23 February 2012 (EST)

External IP address 92.27.7.173.

External domain address lspace.nottinghack.org.uk (DNS record looked after by 'RepRap' Matt)

Hackspace Network

Static & Reserved IP's

Currently the network runs on 10.0.0.0/24

The following ranges are reserved for there given purpose

Start	End	Purpose
10.0.0.1	10.0.0.1	kryten The Main Router
10.0.0.2	10.0.0.19	Static Servers
10.0.0.20	10.0.0.29	Static Computers
10.0.0.40	10.0.0.49	Static Webcams
10.0.0.50	10.0.0.59	openVPN DHCP pool
10.0.0.60	10.0.0.79	Static HackSpace Instrumentation
10.0.0.90	10.0.0.99	Static Printers
10.0.0.100	10.0.0.254	DHCP Range
10.0.0.255	10.0.0.255	Broadcast

These are assigned via DHCP/MAC using Kryten or set statically on the device

IP	DNS Name	Notes
10.0.0.1	Kryten	Router
10.0.0.2	Holly	Our always on server
10.0.0.3	Joshua	Our "playful" games server
10.0.0.4	JARVIS	Sandbox Debian VM open for all members
10.0.0.5	Rommie	HMS Development VM
10.0.0.10	Collective	ESXi Management Server
10.0.0.11	vCMA	VMware vCenter Mobile Access runnning under Collective
10.0.0.12	HollyVM	Holly VM running under Collective
10.0.0.21	yoocnc	YooCNC desktop tool no longer at space
10.0.0.40	studiocam	Pan/Tilt Studio webcam
10.0.0.60	gatekeeper	Access Control nanode
10.0.0.61	MatrixMQTT	BIG LED Matrix Display nanode
10.0.0.62	Vending Machine	RFID cashless payment
10.0.0.63	Mini-matrix	Blue room mini-matrix display
10.0.0.64	Wall of Faces	Wall of members faces
10.0.0.90	marvin	A4 Laser Printer
10.0.0.91	Clank	A3 Laser Printer
10.0.0.92	B4	A4 InkJet with Scanner
10.0.0.97		DesignJet 600 Plotter

External Port Routing

Service	External Port	Internal Port	Internal IP	Notes
HTTP	80	80	10.0.0.2	Webserver on Holly
SSH	1921	22	10.0.0.2	SSH on Holly
SSH	1922	22	10.0.0.12	SSH on HollyVM

Server Naming

See here for our naming convention

Network Devices

Able

Able is Kryten's brother the Linksys ADSL2MUE modem that talks to the outside world.
Running in PPPoA bridge mode Kryten passes the talktalk login detail to Able.

Kryten

Kryten (named after Kryten) is a Linksys WRT54GL running DD-WRT VPN Build, he handles all our DHCP, routing from the external world and WiFi.
Kryten has a 4 port switch - Holly takes 1.
WiFi for Hackspace SSID: HSNOTTS passcode uses WPA2 protocol AES encryption. Members only, passcode on request, changes to the passcode will be posted to the members only Google group.
WiFi for guests is setup as HSNOTTS_GUEST and passcode can be provided and this will run on a seperate VLAN. <br/ The Nottinghack VLAN has access to local resources - e.g. a future NAS file-share , a local dropbox server for projects & collaborations, a backup of all Web / Wiki files (to allow a remote restore in the event of moving hosts / outage of services) and anything else we don't want to be web facing.
The VPN (when enabled) would allow remote management of the VLANS, which could come in handy in the event of issues with the client WiFi access point.

Router management username & password for Authorised members only. If there something you need changing ask on the google group or speak to 'RepRap' Matt or Tony S directly
Usual rules apply, as to any tool - if you don't know how to use it / don't do anything :)

OpenVPN

Kryten runs our openVPN server for access to the hackspace network from the outside world.
For more details see the VPN page

Servers

Holly

Main article: Holly

Collective

Main article: Collective

Joshua

Joshua, (named after WOPR), loves to play games, Tic Tac Toe, Chess, Global Thermonuclear War... all the family favourites. We've co-opted him into running Quake II, Open Arena, Unreal Tournament & Counter Strike 1.5.
The aim is to have a games server running games suitable for clients running low powered netbooks & laptops. This allows us to run LAN parties & have more people join in, without having to bring gaming rigs from home. Also QII & Open Arena have open source install paths available, with Unreal & Counter Strike available at low cost.
Joshua is running Windows XP Pro on a 1GHz PIII with 512MB RAM & a RIVA TNT2 graphics card.
Impressive I know.

There are 2 user accounts -
"David" - not password protected, but limited access - suitable for web browsing / printing etc.
"Falken" - admin account - speak to Tony_S if you need the password.

Printers

Marvin

Marvin the Paranoid Android, named after Marvin_the_Paranoid_Android

According to Marvin, "The first ten million years were the worst, and the second ten million years, they were the worst too. The third ten million I didn't enjoy at all. After that I went into a bit of a decline." Apparently, the best conversation he'd had was over 40 million years ago, and that was with a coffee machine.

The HP Laserjet 4 Plus is set up on 10.0.0.90 as marvin.
We have a few spare toners but donations towards paper usage are more than welcome.

Clank

The HP Laserjet 5Si is set up on 10.0.0.91 as clank.
The printer feeds A4 paper from tray 2 and A3 paper from tray 3.
A duplexer is installed enabling double-sided printing.

B4

The Brother MFC-5460CN is set up on 10.0.0.92 as B4.
Printing and copying in colour, and scanning via "Control Center 3" software on quorra when running WindowsXP.

Websites

Nottinghack.org.uk

The main Nottinghack website is run for a dedicated linux server located in Florida provided by 'RepRap' Matt

This hosts the Wordpress blog, this wiki, the Nottinghack Planet, and all the external DNS recordes for Nottinghack domains, we have nottinghack.[org.uk|co.uk|com]

The Twitterbot for @HSNOTTS is also hosted on on this server.

shop.nottinghack.org.uk

'Forth coming' online shop.

lspace.nottinghack.org.uk

Hosted locally at the space on Holly
DNS record looked after by 'RepRap' Matt

cacti.nottinghack.org.uk

Also hosted locally on Holly this provides graphing of various stats and info from the hackspace instrumentation

http://holly/

Our intranet, only accessible form the hackspace network

HackSpace Instrumentation

The Network and Holly provide the backbone to our HackSpace Instrumentation projects.

Other Info

ADSL Connection Reboot Procedure

If for some reason the internet connection is not responding! The Kryten and Able are located on the Internet shelf on the Members Storage room On Able check if the 'DSL' and 'Internet' lights are green If not on then reboot Able by cycling power using the power switch on the back, If two minutes after doing this the 'DSL' light does not come back on then you can also cycle power on Krtyen If there's still no look, it could well be an outside issue with talktalk.

Extra Equipment

See Network/Equipment for a list of our other network gear.