Differences between revisions 30 and 34 (spanning 4 versions)

The 40m has two network segments: 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

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	192.168.113.20
nameserver	131.215.125.1
nameserver	131.215.139.100
nameserver	131.215.254.99

See also Martian Host Table for IP address assignments on the martian network.
When you add a new host to the Martian network, choose a name from Computers and Scripts/Pool of Names for Computers.
To ssh to one of the martian computers from a GC computer, ssh into controls@nodus, then use "name.martian" for the name. i.e.
```
 shh allegra.martian 
```

Wireless Network

The wireless network is part of the Martian Network. The Martian ethernet is bridged to wireless via a Linksys WRT600N wireless router with IP address https://192.168.113.220. Note that the wireless access point is only bridging the wired and wireless networks--it does not do NAT. To access the outside world, your network settings should be the same as given above for the Martian network.
You can configure the router by accessing its IP address with a web browser.
The password for configuring the wireless AP is ll_admin.
The manual for the router is here: attachment:WRT600N_Manual.pdf
Here are several screen shots of the configuration screens: attachment:screen1.pdf attachment:screen2.pdf attachment:screen3.pdf attachment:screen4.pdf
Here is attached the router's configuration file as of June 7, 2011. The router can reload this file if it gets lost or corrupted. attachment:MartianRouter.bin
Basically, you don't care about the internet setup because you don't connect anything to the WAN port. The physical connection to the router is just one martian LAN cable to one of the LAN ports.
Security is enforced by the MAC address filtering. Only registered machines can connect to the wireless network. Whenever you reset the router (not power cycle), you should register all the lab laptops to the router.
The SSID of the martian wireless network is 40MARS.

Mount linux1

If you want to mount linux1 on a computer in order to share data on Martian network, add the following line on the file /etc/fstab

linux1:/home/cds        /cvs/cds                nfs     rw,bg,soft      0 0

Then make the directory where the linux1 will be mounted on
{{{ mkdir /cvs && mkdir /cvs/cds

}}}

Then reboot the computer. If it's mounted correctly you will find some directories under /cvs/cds/

Firewalling by Router:WRT310N

A firewall is used for network isolation between a new CDS computer and the existing CDS system. It nicely allows to avoid a network conflict. For this purpose, a network router: LINKSYS WRT310N has been employed.

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.

40m Martian Computer List (.odp format)

attachment:40m%20Martian%20Network%20Computer%20List

-  ⇤ ← Revision 30 as of 2010-07-22 18:02:13 → 
  Size: 3377
  Editor: KiwamuIzumi
  Comment:
+   ← Revision 34 as of 2011-06-08 03:27:58 → ⇥
  Size: 3505
  Editor: RanaAdhikari
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 9:
- . IP addresses on the martian network are in the form 131.215.'''113'''.XXX
+ . IP addresses on the martian network are in the form 192.168.'''113'''.XXX
 Line 13:
-|| Gateway    || 131.215.113.2    ||
+|| Gateway    || 192.168.113.2    ||
 Line 15:
+|| nameserver || 192.168.113.20   ||
-Line 23:
+Line 24:
- . To ssh to one of the martian computers from a GC computer, ssh into controls@nodus, then use "name.martian" for the name. i.e. shh allegra.martian (while on nodus).  If there's a more efficient way of doing this, that would be good to know too.
+ . To ssh to one of the martian computers from a GC computer, ssh into {{{controls@nodus}}}, then use "name.martian" for the name. i.e.
 . {{{
 shh allegra.martian }}}
-Line 27:
+Line 29:
- . The wireless network is part of the Martian Network.  The Martian ethernet is bridged to wireless via a Linksys WRT600N wireless router with IP address 131.215.113.220.  Note that the wireless access point is only bridging the wired and wireless networks--it does not do NAT.   To access the outside world, your network settings should be the same as given above for the Martian network.
+ . The wireless network is part of the Martian Network.  The Martian ethernet is bridged to wireless via a Linksys WRT600N wireless router with IP address https://192.168.113.220.  Note that the wireless access point is only bridging the wired and wireless networks--it does not do NAT.   To access the outside world, your network settings should be the same as given above for the Martian network.
-Line 35:
+Line 37:
+ . Here is attached the router's configuration file as of June 7, 2011. The router can reload this file if it gets lost or corrupted. attachment:MartianRouter.bin