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Info.png This page has been archived. All information in this article is historical.
  • Please keep an updated copy of this page printed out and posted in the server room, so there is access to documentation even if the network / internet is down
  • Also see IT Policies
  • We have many people working with the equipment, remember to attach or tie down anything that could get unplugged/fall/etc. We twice lost internet - first time the router fell and power switch got pressed, second time a wire was pulled out of main internet switch.

Network status

Skullspace internal network is fine but needs better organization and documentation, see tasks section. Occasional issues connecting to the main skullspace SSID. Internet connection has occasional issues when the SkSp or AW routers have trouble getting an IP, this is being troubleshooted.

High-level description

Internet is furnished by VOI, goes to the internet switch where multiples routers and servers connect. There is a main router for the main Skullspace network; this connects to a 24-port gigabit switch which has a few sub-switches in different rooms. There are APs around Skullspace with SSIDs beginning with "skullspace" and some near the fire escape connected to dishes outside, with different SSIDs.

Internet feeds

Primary: Internet from VOI (wifi-based Ubiquity NB5, tested 60mbit down 20mbit up to Winnipeg, with large packets) comes from a drop in the middle of the space, connects to line #?? below the drop, goes to the server room where its PoE is; afterwards goes to the primary internet switch. We have permission to use a few IPs (currently being assigned by DHCP, but that may change - that's why they have the small white Microtik router) and a 'reasonable' amount of bandwidth.

Network hardware

All switches and their interconnects are gigabit (a few exceptions below), so two machines doing 100mbit of transfer won't fill any pipes on the way. All items are donated unless otherwise noted.

  • Netgear WNDR3700 router, donated by Project Bismark. It had a problem (routed packets fine but services like DHCP/DNS/web server didn't work) so was taken out of the network to test.
  • Linksys WRT54G2 v1.5 as a classroom AP. G wireless has been tested to 33mbit. WAN port may sometime have packet loss.
  • Linksys WRT350N with DD-WRT v24SP2 firmware as a spare main router when the Netgear has issues. Lent by Stef.
  • Linksys WRT54G v2 with tomato 1.28 firmware as a spare. Lent by Stef.
  • A Cisco 4924 (:A0) as the main switch, by default everything connects here.
  • A Cisco 4924 (:??) a spare switch.
  • 2 D-Link DWL-810+ bridges for testing
  • Netgear GS108T as the workshop switch.
  • D-Link DWL-7100AP as a testing 2ghz/5ghz wireless AP in the workshop, still unproven.
  • D-Link DES-3224 as a spare switch, management only on port 7 (Telnet, username "D-Link").
  • A Belkin F5D8236 wireless-N router in the lounge room is setup as an AP and switch (100mbit only), connected to the main SkSp network. May have had packet loss before.
  • 2 Cisco Aironet 1100 APs with .B cards, modified with pigtails to connect to outside dishes, and two others (:90 G card, :4A B card) spare.
  • Belkin F5D5141-5 switch in the lounge.
  • Intel 510T switch - currently unused. Old, only telnet management
  • Cisco 2950 switches #1 and #2 - currently unused, will setup as internet-side switches
  • Mikrotik RB750 (small white box) VOI's router
  • Western Multiplex Tsunami 100 5.8ghz - two links (4x IDU, 2x high ODU, 2x low ODU) will be used to link to Seccuris and as a spare. Long-term loan from HighSpeedCrow. Panel antenna loaned from Seccuris.


Please follow the standard below when labeling any new lines. LSB is closest to the RJ45. Unless otherwise noted, all wires below originate from the main rack. All wiring should be cat5 or better, T568B standard (orange-first).

num in binary R/G Description Connects to
00 RRR (000) Workshop pole ?
01 RRG (001) wirelss APs (1of3) ?
02 RGR (010) Workbench south GS108 switch?
03 RGG (011) Workbench North nothing
04 GRR (100) Classroom west nothing
05 GRG (101) Drink machine nothing
06 RRG (110) Lounge north pole nothing
07 GGG (111) Lounge south pole Belkin switch, etc
08 GRRR (1000) Electrical room/Assentworks (1of2) AW internet?
09 GRRG (1001) Electrical room/Assentworks (2of2) sksp to AW link
10 GRGR (1010) War Room 1of2 nothing
11 GRGG (1011) War Room 2of2 nothing

The above runs were conservative - in many cases only a single drop because we were low on cat5, when it'd have been preferable to put 2 drops to be prepared for the future - but they still total up to 2000ft of cable, and quite a few hrs of wiring work.


  • discover why there's occasional issues connecting to the main SSID on Netgear router.
  • finish mapping and labeling ethernet lines
  • terminate lines correctly in a panel once we're sure server room is stable
  • run 18? lines cleanly from networking rack to the blue racks.
  • label networking equipment (IPs etc) and servers, update this page for the latter
  • separate security/camera network from Skullspace network
  • organize secondary internet feed, better router and switch for it
  • put read-only and full-access passwords on devices

Wireless Networks

SSID speeds password description
skullspace N2.4/5.x (normal) main network; Netgear AP in server room
skullspace[25]ghz_test A/G (normal) D-link AP in workshop, being tested
skullspace_lounge_test N2.4 (normal) Belkin AP in lounge, being tested
skullspace_classroom G (normal) Linksys AP in classroom
Skullspace-dish-aimedatKingsHead B (normal) east-pointed dish on fire escape ladder.

King's Head Pub AP

A popular meeting space in Winnipeg, 1 block away from Skullspace, which doesn't have wifi - but we can see the rear of its brick building from Skullspace. So we used a donated Cisco Aironet 1100AP, modified it for external antenna connection, ran some LMR400 cable outside the fire escape door and up the fire escape ladder, and pointed a 19dbi dish towards the pub. SSID is SkullSpace-dish-aimedatKingsHead, ask a member for the password. It doesn't work at all in the south main-floor area, but it does have coverage in most parts of the north main-floor area. Speedtests: 1 to 4mbit down on a laptop with a good wireless card (Atheros N). Attempted to replace the Cisco 802.11B card in the AP with a 802.11G upgrade card (AIR-MP21G-A-K9), but it became almost impossible to connect - likely because Cisco was becoming involved with Broadcom at the time that G card was made, the latter is known for the low sensitivity and receiver quality of their chipsets.

Plans to increase coverage:

  • upgrade 19dbi to 24dbi antenna - only issue is they're huge and a lot of windload to put on the fire escape ladder (especially if they ice up in the winter), would prefer a roofmount pad. We'd need to calculate that the smaller beamwidth of the higher-gain antennas doesn't lose coverage of the edges of the King's Head - this math would be size of Kings's Head building x distance = degrees of view?
  • add antenna receive diversity - again, the second antenna would be better on an additional (spaced farther apart horizontally) roofmount pad; vertical diversity on the fire escape ladder wouldn't help as much.
  • move antenna - currently the view (all the way up the fire escape ladder) to the front of King's Head is blocked by a concrete building. 5-10ft south on a roofmount would be ideal.
  • add an amplifier or a higher-power radio. The Cisco puts out 100mw, have a 500mw amplifier. Since this isn't an omni but a highly directional antenna, we could maybe classify it under the rule that allows 24dbi gain and 24dbm power output (500mw is 27dbm, but we're losing 3 db in the 40ft of LMR cable and connections, which brings us nicely to 24dbm).
  • ground the fire escape ladder - would be a good idea.
  • check that the antenna and LMR cable/connections are running at full efficiency - this is old gear from a garage.

Signal in the North-main floor area is currently -82 to -87 when connection is possible, with all of the above it'd be good to get it to mid-70s numbers which should allow for pretty good coverage, considering we're a block away and going through thick brick/concrete.

Main router Port Forwarding entries

If ever we need to reset the main router, these will be put back in, so keep them updated.

Name Port range Protocol Dest IP Enabled? Notes
MUMD latest ubuntu ssh 22 TCP .29 Y -
MUMD latest ubuntu rdp 3389 TCP .29 Y -
ben's server ssh 9222 both .37 Y -

Internal IP usage

  • main Linksys/Netgear router
  • Belkin F5D8236 Router as AP in Lounge area
  • Cisco 1100AP (King's Head)
  • Intel 510T 100mbit switch
  • Cisco 1100AP South
  • HP 300x? parallel print server
  • noel, alex's linux container on vmsrv
  • kyle, a linux container on vmsrv
  • stefen, a linux container on vmsrv
  • Samsung CLP-310N printer
  • MUMD Arch Linux
  • Cisco 2950 switch
  • Netgear GS108T workshop switch
  • Cisco 4924 Switch-1 (main)
  • Cisco 4924 Switch-2
  • D-link DWL-7100AP for testing
  • Linksys AP in classroom
  • DES-3224
  • Spare Linksys AP
  • Cisco Aironet 1100 :90
  • Cisco Aironet 1100 :4A
  • vmsrv
  • Who took this and didn't document?
  • central services for MUMD
  • MUMD latest Ubuntu
  • Assentworks router - Sksp network interface
  • Wyse Winterm thin client (computer lab)
  • Skullhost on vmsrv
  • iscsi server on vmsrv
  • Kenny servers
  • VPN server on vmsrv - contact Jay or Alex
  • Ben's server
  • Driftnet laptop
  • bitcoin mining
  • Main router DHCP space
  • Network lab address space
  • : IPs for temporary wireless links

VOI IP usage

VOI gave us (mask as well as 2604:4280:1:c0de::/64, you must reserve IPs here before using them. You'll need to plug into the new VOI-Static switch, currently DES-3224 on top of rack.

IP DNS Use Contact used by? reason for public IP and notes
VOI Mikrotik RB750? router VOI Networks now required by network design
Ian CStanners a or Sksp admins
Main AssentWorks router CStanners a or AW admins feb 17 has AW port-forwarded services
Fwd: <several>
Vobster Nepharia Services and 2012-02-17 Runs DNS, SMTP/IMAP, OpenVPN, Asterisk, SSH & IRC, and HTTP for Nepharia and its associated domains.
Fwd: <several>
Vobster SkullSpace Services and 2012-02-17 Runs DNS, SMTP/IMAP, SSH & IRC, and HTTP for SkullSpace.
Andrew's Server andrew at andreworr dot ca 2012-02-17 http/ssh/vpn/IPv6
Ayecee's Server 2012-07-07 Static address for freenet node
Colin / Jeremy FreeBSD server 2013-10-01
vmsrv 2012-08-27 VM server open to all members, will run an http proxy to allow this one ip to host many web servers
Sean's server. sean _at_ tinfoilhat _dot_ ca 2013-09-27 L2TP etc.
SkullSpace XMPP alexwebr @ Now Hosts the XMPP server that servers
Colin's project server CStanners @ gmail Occasional IPv6, VPN services and testing
Ben's server 2012-12-18 http/ssh/vpn/other
The Danger Zone ctfadmin@ 2012-06-01 The home of the SkullSpace Teaching CTF.

Servers & Internet-connected devices

Main Skullspace router is always set to WAN MAC 00:01:01:01:01:01. IP is currently

Name Model/setup IPs and MACs Description/contact
Ben's White case w/ front game port / 00:4f:49:0b:f7:fb
vmsrv Black tower case. / 00:24:1d:da:50:30 See vmsrv
Vobster / Mak and Dave's server Dell PowerEdge R200
00:22:19:d4:eb:eb or


All members with RFID fobs have access to the server room