Difference between revisions of "Bloominglabs Network"

Revision as of 16:54, 20 January 2016

This is information pertaining to the physical network that resides inside Bloominglabs. If you want to make changes and improve our network that's great! If you want to do it without talking to anyone first, that's terrible! We ask is that you communicate with the rest of the group before making significant changes (like replacing the wifi router, core switch, or embark on a major rewiring). Otherwise, please have fun!

DHCP

Both our wifi and our hardline have DHCP available. Currently there is a limit of 50 DHCP leases free for use. If you are placing a device on the network semi-long term, please consider configuring it with a static IP for both your convenience and ours.

Setting up a Static IP

Static IP's should be placed below 192.168.1.125. Use these settings:

• Netmask 255.255.255.0
• Gateway 192.168.1.1
• DNS 8.8.8.8

Last but not least, please drop the members mailing list a note so others don't stumble over your handiwork.

NTP and Syslog

We have an ntp server, add this to /etc/ntp.conf and restart your ntpd:

server 192.168.1.2

You may also wish to add this to your /etc/ntpd.conf to prevent abuse of your box:

# Prevent participation in DDOS attacks.
disable monitor
# noquery bans all status queries if needed
# noquery

Syslog can be sent to this box:

192.168.1.7

Syncing /etc/hosts

We could setup a proper DNS server... Or you could run this sync script on your host to keep your /etc/hosts file synced with our static IP list.

• https://bloominglabs.no-ip.org:8888/sync
• https://192.168.1.2:8888/sync

Network monitoring

We have passive network monitoring running for experimental and monitoring purposes. If you inside the space you can see the logs here:

• http://192.168.1.7/current

The list of active DHCP leases is availble here from within the space:

• https://192.168.1.2:8888/reports/dhcpclients.html

Switches

We have a 48 port Cisco switch in the server closet. There is also a 16 port HP switch on the office table, and several smaller hubs at various end-points in the space.

Extending the network

We have no issues with folks extending the network with switches and hubs. However if the device has an in-band management interface (has its own IP address) make sure it doesn't clobber anything currently existing.

Wiring

There are three strands of CAT5 running through the central dividing wall. Two of them are live and the third is still dark at the moment of this writing (1-2016). Be aware that there are several strands of CAT5 which are NOT ethernet running through the space supporting other wiring needs. If you find an unplugged RJ45 connector on a long run of CAT5, it may be worth asking what it is before plugging it in to a network device.

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