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| . IP addresses on this network are in the form 131.215.'''114'''.XXX | * IP addresses on this network are in the form 131.215.'''114'''.XXX and 131.215.'''115'''.XXX . * The wireless router connected to the caltech net has SSID "40m" (2GHz), "40m_5G1" and "40m_5G2" (5GHz). The router is nominally located on the top of the computer rack in the office area. * 5 wifi repeaters have been installed, one at the vertex, 2 at midpoints of each arm, and at the 2 ends to flood the whole lab with "40m" (2GHz) and "40m_5G1" (5GHz) networks. These allow the use of laptops/phones outside the martian network for googling and remote loging while working in the lab. |
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| . See the [[Martian_Host_Table|Martian host table]] for IP address assignments on the martian network. | * The new net router installed Jun 27, 2018 is controlling all the traffic between the GC net and the martian net. * The net router has the outside IP of 131.215.115.200, and internal IP of 192.168.113.2 * It transmits all the trafic from inside to outside, but does only particular access from outside. * nodus.ligo.caltech.edu is now the alias of 131.315.115.200. * To ssh to one of the martian computers from a GC computer, ssh into `controls@nodus`, then use `name` (or `name.martian`) for the name. i.e.{{{ssh pianosa.martian }}} * NAT Router setting page: [[FirewallSetting]] |
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| . When you want to add a new host to the Martian network [[CDS/How_to_join_martian | read this]]. | * See the [[Martian_Host_Table|Martian host table]] for IP address assignments on the martian network. * When you want to add a new host to the Martian network [[CDS/How_to_join_martian | read this]]. |
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| . To ssh to one of the martian computers from a GC computer, ssh into `controls@nodus`, then use `name` (or `name.martian`) for the name. i.e.{{{ ssh pianosa.martian }}} |
== Martian Wireless Network == |
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== Wireless Network == |
=== Wifi router === |
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| == Wireless Bridge for GPIB instruments == | The martian IP address of this unit is 192.168.113.232. username: password: === Wireless Bridge for GPIB instruments === |
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== Firewalling by Router:WRT310N == . A firewall is used for network isolation between new CDS computers and the existing CDS system. It avoids network conflicts. For this purpose, a network router: ''LINKSYS WRT310N'' is used. || '''network address''' || 192.168.113.178 || || || '''internal address'''|| 192.168.1.1 || || || ''' DHCP address ''' || 192.168.1.100-150|| currently disabled || . Anyone can log in to the router by any web browser. The login password is set to {{{admin}}}. |
The 40m has two networks: the LIGO general computing network and an internal "martian" network.
LIGO Caltech network
IP addresses on this network are in the form 131.215.114.XXX and 131.215.115.XXX .
- The wireless router connected to the caltech net has SSID "40m" (2GHz), "40m_5G1" and "40m_5G2" (5GHz). The router is nominally located on the top of the computer rack in the office area.
- 5 wifi repeaters have been installed, one at the vertex, 2 at midpoints of each arm, and at the 2 ends to flood the whole lab with "40m" (2GHz) and "40m_5G1" (5GHz) networks. These allow the use of laptops/phones outside the martian network for googling and remote loging while working in the lab.
Martian network
IP addresses on the martian network are in the form 192.168.113.XXX
- The wireless network is on the martian network.
Gateway |
192.168.113.2 |
netmask |
255.255.255.0 |
nameserver |
192.168.113.104 |
nameserver |
131.215.125.1 |
nameserver |
131.215.139.100 |
nameserver |
131.215.254.99 |
- The new net router installed Jun 27, 2018 is controlling all the traffic between the GC net and the martian net.
- The net router has the outside IP of 131.215.115.200, and internal IP of 192.168.113.2
- It transmits all the trafic from inside to outside, but does only particular access from outside.
- nodus.ligo.caltech.edu is now the alias of 131.315.115.200.
To ssh to one of the martian computers from a GC computer, ssh into controls@nodus, then use name (or name.martian) for the name. i.e.ssh pianosa.martian
NAT Router setting page: FirewallSetting
See the Martian host table for IP address assignments on the martian network.
When you want to add a new host to the Martian network read this.
Martian Wireless Network
Wifi router
On Jan 6th, 2016, the Martian wifi router was replaced with a Netgear R6400. Link to the corresponding ELOG entry
The router supports a 2 GHz network (11g) named "40MARS" and a 5 GHz network (11ac) "40MARS_5G". These two SSIDs are hidden.
The martian IP address of this unit is 192.168.113.232.
username:
password:
Wireless Bridge for GPIB instruments
On Jan 8th, 2016, a new wireless bridge (NETGEAR EX3700) for GPIB instruments was installed.
Device Name: EX3700_1, Fixed IP: 192.168.113.233
It accepts ethernet (wired) devices with fixed IP of 192.168.113.XXX
How_To_Configure_NETGEAR_EX3700
Nameserver and DHCP
chiara runs the DNS and DHCP for the Martian network, set up largely in the manner detailed in this website.
Configuration files can be found at
chiara:/etc/bind/named.conf.local chiara:/etc/dhcp/dhcpd.conf
and other files in those same directories.
Mount NFS filesystem
If you want to mount the /cvs/cds NFS filesystem on a computer already on the martian network, add the following line to the file /etc/fstab
chiara:/home/cds /cvs/cds nfs rw,bg,nfsvers=3
Then make the directory where the /cvs/cds dir will be mounted, mount the filesystem via
mkdir -p /cvs/cds sudo mount /cvs/cds